新手--python3.5调用webdriver报错

脚本启动Fiefox报错
代码:

-*- coding:utf-8 -*-

from selenium import webdriver
browser = webdriver.Firefox()
browser.get('http;//www.baidu.com')

browser.find_element_by_id('kw').send_keys('selenium')
browser.find_element_by_id('su').click()

browser.quit()

报错信息:
Traceback (most recent call last):
File "C:\Users\hxx\AppData\Local\Programs\Python\Python35\lib\site-packages\selenium\webdriver\common\service.py", line 74, in start
stdout=self.log_file, stderr=self.log_file)
File "C:\Users\hxx\AppData\Local\Programs\Python\Python35\lib\subprocess.py", line 676, in init
restore_signals, start_new_session)
File "C:\Users\hxx\AppData\Local\Programs\Python\Python35\lib\subprocess.py", line 955, in _execute_child
startupinfo)
FileNotFoundError: [WinError 2] 系统找不到指定的文件。

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "E:/workspace/baidu.py", line 3, in
browser = webdriver.Firefox()
File "C:\Users\hxx\AppData\Local\Programs\Python\Python35\lib\site-packages\selenium\webdriver\firefox\webdriver.py", line 145, in init
self.service.start()
File "C:\Users\hxx\AppData\Local\Programs\Python\Python35\lib\site-packages\selenium\webdriver\common\service.py", line 81, in start
os.path.basename(self.path), self.start_error_message)
selenium.common.exceptions.WebDriverException: Message: 'geckodriver' executable needs to be in PATH.

1个回答

把geckodriver 这个可执行文件的路径加到系统的PATH的环境变量中

Csdn user default icon
上传中...
上传图片
插入图片
抄袭、复制答案,以达到刷声望分或其他目的的行为,在CSDN问答是严格禁止的,一经发现立刻封号。是时候展现真正的技术了!
其他相关推荐
selenium3.5下webdriver设置超时
多线程下预启动webdriver时给他们设置超时时长: this.webdriver.set_page_load_timeout(180) 结果报错如下: this.webdriver.set_page_load_timeout(180) File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/remote/webdriver.py", line 807, in set_page_load_timeout 'type': 'page load'}) File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/remote/webdriver.py", line 297, in execute self.error_handler.check_response(response) File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/remote/errorhandler.py", line 194, in check_response raise exception_class(message, screen, stacktrace) selenium.common.exceptions.WebDriverException: Message: timeouts
Python中怎么使用execute_script修改window.navigator.webdriver的值?
使用webdriver登录淘宝时window.navigator.webdriver值为true,怎么用execute_script修改window.navigator.webdriver的值为false。我想知道修改window.navigator.webdrier值的具体的JS代码
selenium中设置了chrome的开发者模式,window.navigator.webdriver依然是true
今天爬网站,用selenium被识别了。昨天还是一切正常。 我的chrome设置了开发者模式,但是检查后发现window.navigator.webdriver的值还是true。 有人遇到过类似情况吗?
pyinstaller打包处理的程序用不了
warn-xxx.txt文件的信息如下,求大佬处理 This file lists modules PyInstaller was not able to find. This does not necessarily mean this module is required for running you program. Python and Python 3rd-party packages include a lot of conditional or optional module. For example the module 'ntpath' only exists on Windows, whereas the module 'posixpath' only exists on Posix systems. Types if import: * top-level: imported at the top-level - look at these first * conditional: imported within an if-statement * delayed: imported from within a function * optional: imported within a try-except-statement IMPORTANT: Do NOT post this list to the issue-tracker. Use it as a basis for yourself tracking down the missing module. Thanks! missing module named pyimod03_importers - imported by PyInstaller.loader.pyimod02_archive (delayed, conditional), c:\program files\python37\lib\site-packages\PyInstaller\loader\rthooks\pyi_rth_pkgres.py (top-level) missing module named 'pkg_resources.extern.pyparsing' - imported by pkg_resources._vendor.packaging.requirements (top-level), pkg_resources._vendor.packaging.markers (top-level) missing module named 'com.sun' - imported by pkg_resources._vendor.appdirs (delayed, conditional, optional) missing module named com - imported by pkg_resources._vendor.appdirs (delayed) missing module named win32api - imported by distutils.msvccompiler (optional), pkg_resources._vendor.appdirs (delayed, conditional, optional) missing module named win32com.shell - imported by pkg_resources._vendor.appdirs (delayed, conditional, optional) missing module named _uuid - imported by uuid (optional) missing module named netbios - imported by uuid (delayed) missing module named win32wnet - imported by uuid (delayed) missing module named __builtin__ - imported by numpy.core.numerictypes (conditional), numpy.core.numeric (conditional), numpy.lib.function_base (conditional), numpy.lib._iotools (conditional), numpy.ma.core (conditional), numpy.distutils.misc_util (delayed, conditional), numpy (conditional), pymysql._compat (conditional), pkg_resources._vendor.pyparsing (conditional), setuptools._vendor.pyparsing (conditional) missing module named ordereddict - imported by pkg_resources._vendor.pyparsing (optional), setuptools._vendor.pyparsing (optional) missing module named StringIO - imported by PyInstaller.lib.modulegraph._compat (conditional), PyInstaller.lib.modulegraph.zipio (conditional), setuptools._vendor.six (conditional), numpy.lib.utils (delayed, conditional), numpy.lib.format (delayed, conditional), numpy.testing._private.utils (conditional), six (conditional), urllib3.packages.six (conditional), requests.compat (conditional), selenium.webdriver.remote.webelement (optional), pkg_resources._vendor.six (conditional) missing module named _scproxy - imported by urllib.request (conditional) missing module named 'macholib.MachO' - imported by PyInstaller.depend.dylib (delayed), PyInstaller.depend.bindepend (delayed), PyInstaller.utils.osx (top-level) missing module named macholib - imported by PyInstaller.depend.dylib (delayed, conditional) missing module named _pkgutil - imported by PyInstaller.lib.modulegraph.modulegraph (delayed, optional) missing module named dis3 - imported by PyInstaller.lib.modulegraph._compat (conditional) missing module named urllib.pathname2url - imported by urllib (conditional), PyInstaller.lib.modulegraph._compat (conditional) missing module named pyimod00_crypto_key - imported by PyInstaller.loader.pyimod02_archive (delayed, optional) missing module named thread - imported by numpy.core.arrayprint (conditional, optional), PyInstaller.loader.pyimod02_archive (conditional) missing module named 'macholib.dyld' - imported by PyInstaller.depend.bindepend (delayed) missing module named 'macholib.mach_o' - imported by PyInstaller.depend.bindepend (delayed) missing module named Crypto - imported by PyInstaller.building.makespec (delayed, conditional, optional) missing module named win32ctypes.core._time - imported by win32ctypes.core (top-level), win32ctypes.pywin32.win32api (top-level) missing module named win32ctypes.core._system_information - imported by win32ctypes.core (top-level), win32ctypes.pywin32.win32api (top-level) missing module named win32ctypes.core._resource - imported by win32ctypes.core (top-level), win32ctypes.pywin32.win32api (top-level) missing module named win32ctypes.core._dll - imported by win32ctypes.core (top-level), win32ctypes.pywin32.win32api (top-level) missing module named win32ctypes.core._common - imported by win32ctypes.core (top-level), win32ctypes.pywin32.win32api (top-level), win32ctypes.pywin32.win32cred (top-level) missing module named win32ctypes.core._authentication - imported by win32ctypes.core (top-level), win32ctypes.pywin32.win32cred (top-level) missing module named cffi - imported by win32ctypes.core (optional) missing module named UserDict - imported by PyInstaller.compat (conditional), pytz.lazy (optional) missing module named multiprocessing.set_start_method - imported by multiprocessing (top-level), multiprocessing.spawn (top-level) missing module named multiprocessing.get_start_method - imported by multiprocessing (top-level), multiprocessing.spawn (top-level) missing module named multiprocessing.TimeoutError - imported by multiprocessing (top-level), multiprocessing.pool (top-level) missing module named multiprocessing.get_context - imported by multiprocessing (top-level), multiprocessing.pool (top-level), multiprocessing.managers (top-level), multiprocessing.sharedctypes (top-level) missing module named multiprocessing.BufferTooShort - imported by multiprocessing (top-level), multiprocessing.connection (top-level) missing module named multiprocessing.AuthenticationError - imported by multiprocessing (top-level), multiprocessing.connection (top-level) missing module named pkg_resources.extern.packaging - imported by pkg_resources.extern (top-level), pkg_resources (top-level) missing module named pkg_resources.extern.appdirs - imported by pkg_resources.extern (top-level), pkg_resources (top-level) missing module named 'pkg_resources.extern.six.moves' - imported by pkg_resources (top-level), pkg_resources._vendor.packaging.requirements (top-level) missing module named pkg_resources.extern.six - imported by pkg_resources.extern (top-level), pkg_resources (top-level) missing module named 'multiprocessing.forking' - imported by c:\program files\python37\lib\site-packages\PyInstaller\loader\rthooks\pyi_rth_multiprocessing.py (optional) missing module named resource - imported by posix (top-level), E:\yxrj\dingzhi\cj\231.py (top-level) missing module named posix - imported by os (conditional, optional), E:\yxrj\dingzhi\cj\231.py (top-level) missing module named _posixsubprocess - imported by subprocess (conditional), multiprocessing.util (delayed), E:\yxrj\dingzhi\cj\231.py (top-level) missing module named readline - imported by cmd (delayed, conditional, optional), code (delayed, conditional, optional), pdb (delayed, optional), E:\yxrj\dingzhi\cj\231.py (top-level) excluded module named _frozen_importlib - imported by importlib (optional), importlib.abc (optional), PyInstaller.loader.pyimod02_archive (delayed, conditional), E:\yxrj\dingzhi\cj\231.py (top-level) missing module named _frozen_importlib_external - imported by importlib._bootstrap (delayed), importlib (optional), importlib.abc (optional), E:\yxrj\dingzhi\cj\231.py (top-level) missing module named _winreg - imported by platform (delayed, optional), numpy.distutils.cpuinfo (delayed, conditional, optional), requests.utils (delayed, conditional, optional), selenium.webdriver.firefox.firefox_binary (delayed, optional), E:\yxrj\dingzhi\cj\231.py (top-level), pkg_resources._vendor.appdirs (delayed) missing module named java - imported by platform (delayed), E:\yxrj\dingzhi\cj\231.py (top-level) missing module named 'java.lang' - imported by platform (delayed, optional), xml.sax._exceptions (conditional), E:\yxrj\dingzhi\cj\231.py (top-level) missing module named vms_lib - imported by platform (delayed, conditional, optional), E:\yxrj\dingzhi\cj\231.py (top-level) missing module named termios - imported by tty (top-level), getpass (optional), E:\yxrj\dingzhi\cj\231.py (top-level) missing module named urllib.getproxies_environment - imported by urllib (conditional), requests.compat (conditional) missing module named urllib.proxy_bypass_environment - imported by urllib (conditional), requests.compat (conditional) missing module named urllib.proxy_bypass - imported by urllib (conditional), requests.compat (conditional) missing module named urllib.getproxies - imported by urllib (conditional), requests.compat (conditional) missing module named urllib.unquote_plus - imported by urllib (conditional), requests.compat (conditional) missing module named urllib.quote_plus - imported by urllib (conditional), requests.compat (conditional) missing module named urllib.unquote - imported by urllib (conditional), requests.compat (conditional) missing module named urllib.urlencode - imported by urllib (optional), urllib3.packages.rfc3986.compat (optional), requests.compat (conditional) missing module named urllib.quote - imported by urllib (optional), urllib3.packages.rfc3986.compat (optional), requests.compat (conditional) missing module named grp - imported by shutil (optional), tarfile (optional), pathlib (delayed), distutils.archive_util (optional), E:\yxrj\dingzhi\cj\231.py (top-level) missing module named 'org.python' - imported by pickle (optional), xml.sax (delayed, conditional), setuptools.sandbox (conditional), E:\yxrj\dingzhi\cj\231.py (top-level) missing module named org - imported by copy (optional), E:\yxrj\dingzhi\cj\231.py (top-level) missing module named pwd - imported by posixpath (delayed, conditional), shutil (optional), tarfile (optional), http.server (delayed, optional), webbrowser (delayed), pathlib (delayed, conditional, optional), distutils.util (delayed, conditional), distutils.archive_util (optional), netrc (delayed, conditional), getpass (delayed), E:\yxrj\dingzhi\cj\231.py (top-level) missing module named urllib2 - imported by numpy.lib._datasource (delayed, conditional), requests.compat (conditional), selenium.webdriver.common.utils (delayed, optional), selenium.webdriver.common.service (delayed, optional) missing module named urlparse - imported by numpy.lib._datasource (delayed, conditional), requests.compat (conditional), selenium.webdriver.remote.remote_connection (optional) runtime module named urllib3.packages.six.moves - imported by http.client (top-level), urllib3.connectionpool (top-level), urllib3.util.response (top-level), 'urllib3.packages.six.moves.urllib' (top-level), urllib3.response (top-level), urllib3.util.queue (top-level) missing module named 'OpenSSL.crypto' - imported by urllib3.contrib.pyopenssl (delayed) missing module named 'cryptography.x509' - imported by urllib3.contrib.pyopenssl (delayed, optional) missing module named 'cryptography.hazmat' - imported by pymysql._auth (optional), urllib3.contrib.pyopenssl (top-level) missing module named cryptography - imported by pymysql._auth (optional), urllib3.contrib.pyopenssl (top-level), requests (optional) missing module named OpenSSL - imported by urllib3.contrib.pyopenssl (top-level) missing module named 'backports.ssl_match_hostname' - imported by setuptools.ssl_support (optional), urllib3.packages.ssl_match_hostname (optional) missing module named brotli - imported by urllib3.util.request (optional), urllib3.response (optional) missing module named "'urllib3.packages.six.moves.urllib'.parse" - imported by urllib3.request (top-level), urllib3.poolmanager (top-level) missing module named Queue - imported by urllib3.util.queue (conditional) missing module named httplib - imported by selenium.webdriver.safari.webdriver (optional), selenium.webdriver.blackberry.webdriver (optional), selenium.webdriver.webkitgtk.webdriver (optional) missing module named cStringIO - imported by selenium.webdriver.firefox.firefox_profile (optional) missing module named copy_reg - imported by numpy.core (conditional), soupsieve.util (conditional), cStringIO (top-level) missing module named 'backports.functools_lru_cache' - imported by soupsieve.util (conditional) missing module named iconv_codec - imported by bs4.dammit (optional) missing module named cchardet - imported by bs4.dammit (optional) missing module named lxml - imported by bs4.builder._lxml (top-level) missing module named 'html5lib.treebuilders' - imported by bs4.builder._html5lib (optional) missing module named 'html5lib.constants' - imported by bs4.builder._html5lib (top-level) missing module named html5lib - imported by bs4.builder._html5lib (top-level) missing module named Cookie - imported by requests.compat (conditional) missing module named cookielib - imported by requests.compat (conditional) missing module named simplejson - imported by pandas.util._print_versions (delayed, conditional, optional), requests.compat (optional) missing module named socks - imported by urllib3.contrib.socks (optional) missing module named _dummy_threading - imported by dummy_threading (optional) missing module named ConfigParser - imported by numpy.distutils.system_info (conditional), numpy.distutils.npy_pkg_config (conditional), pymysql.optionfile (conditional) missing module named scipy - imported by numpy.testing._private.nosetester (delayed, conditional), pandas.core.missing (delayed) missing module named numexpr - imported by pandas.core.computation.expressions (conditional), pandas.core.computation.engines (delayed) missing module named 'scipy.stats' - imported by pandas.plotting._matplotlib.hist (delayed), pandas.plotting._matplotlib.misc (delayed, conditional), pandas.core.nanops (delayed, conditional) missing module named 'scipy.signal' - imported by pandas.core.window (delayed, conditional) missing module named commands - imported by numpy.distutils.cpuinfo (conditional) missing module named setuptools.extern.packaging - imported by setuptools.extern (top-level), setuptools.dist (top-level), setuptools.command.egg_info (top-level) missing module named 'setuptools.extern.six' - imported by setuptools (top-level), setuptools.extension (top-level) missing module named setuptools.extern.six.moves.filterfalse - imported by setuptools.extern.six.moves (top-level), setuptools.dist (top-level), setuptools.msvc (top-level) missing module named setuptools.extern.six.moves.filter - imported by setuptools.extern.six.moves (top-level), setuptools.dist (top-level), setuptools.ssl_support (top-level), setuptools.command.py36compat (top-level) missing module named _manylinux - imported by setuptools.pep425tags (delayed, optional) missing module named wincertstore - imported by setuptools.ssl_support (delayed, optional) missing module named backports - imported by setuptools.ssl_support (optional) missing module named 'setuptools._vendor.six.moves' - imported by 'setuptools._vendor.six.moves' (top-level) missing module named 'setuptools.extern.pyparsing' - imported by setuptools._vendor.packaging.requirements (top-level), setuptools._vendor.packaging.markers (top-level) missing module named 'setuptools.extern.packaging.version' - imported by setuptools.msvc (top-level) missing module named setuptools.extern.six.moves.map - imported by setuptools.extern.six.moves (top-level), setuptools.dist (top-level), setuptools.command.easy_install (top-level), setuptools.sandbox (top-level), setuptools.package_index (top-level), setuptools.ssl_support (top-level), setuptools.command.egg_info (top-level), setuptools.namespaces (top-level) runtime module named setuptools.extern.six.moves - imported by setuptools.dist (top-level), setuptools.py33compat (top-level), setuptools.command.easy_install (top-level), setuptools.sandbox (top-level), setuptools.command.setopt (top-level), setuptools.package_index (top-level), setuptools.ssl_support (top-level), setuptools.command.egg_info (top-level), setuptools.command.py36compat (top-level), setuptools.namespaces (top-level), setuptools.msvc (top-level), 'setuptools._vendor.six.moves' (top-level) missing module named setuptools.extern.six - imported by setuptools.extern (top-level), setuptools.monkey (top-level), setuptools.dist (top-level), setuptools.extern.six.moves (top-level), setuptools.py33compat (top-level), setuptools.config (top-level), setuptools.command.easy_install (top-level), setuptools.sandbox (top-level), setuptools.py27compat (top-level), setuptools.package_index (top-level), setuptools.wheel (top-level), setuptools.command.egg_info (top-level), setuptools.command.sdist (top-level), setuptools.command.bdist_egg (top-level), setuptools.unicode_utils (top-level), setuptools.glob (top-level), setuptools.command.develop (top-level) missing module named 'numpy_distutils.cpuinfo' - imported by numpy.f2py.diagnose (delayed, conditional, optional) missing module named 'numpy_distutils.fcompiler' - imported by numpy.f2py.diagnose (delayed, conditional, optional) missing module named 'numpy_distutils.command' - imported by numpy.f2py.diagnose (delayed, conditional, optional) missing module named numpy_distutils - imported by numpy.f2py.diagnose (delayed, optional) missing module named 'nose.plugins' - imported by numpy.testing._private.noseclasses (top-level), numpy.testing._private.nosetester (delayed) missing module named numpy.core.number - imported by numpy.core (delayed), numpy.testing._private.utils (delayed) missing module named numpy.core.signbit - imported by numpy.core (delayed), numpy.testing._private.utils (delayed) missing module named numpy.core.float64 - imported by numpy.core (delayed), numpy.testing._private.utils (delayed) missing module named numpy.core.integer - imported by numpy.core (top-level), numpy.fft.helper (top-level) missing module named numpy.core.conjugate - imported by numpy.core (top-level), numpy.fft.pocketfft (top-level) missing module named numpy.core.sign - imported by numpy.core (top-level), numpy.linalg.linalg (top-level) missing module named numpy.core.divide - imported by numpy.core (top-level), numpy.linalg.linalg (top-level) missing module named numpy.core.object_ - imported by numpy.core (top-level), numpy.linalg.linalg (top-level) missing module named numpy.core.geterrobj - imported by numpy.core (top-level), numpy.linalg.linalg (top-level) missing module named numpy.core.sqrt - imported by numpy.core (top-level), numpy.linalg.linalg (top-level), numpy.fft.pocketfft (top-level) missing module named numpy.core.add - imported by numpy.core (top-level), numpy.linalg.linalg (top-level) missing module named numpy.core.complexfloating - imported by numpy.core (top-level), numpy.linalg.linalg (top-level) missing module named numpy.core.inexact - imported by numpy.core (top-level), numpy.linalg.linalg (top-level) missing module named numpy.core.cdouble - imported by numpy.core (top-level), numpy.linalg.linalg (top-level) missing module named numpy.core.csingle - imported by numpy.core (top-level), numpy.linalg.linalg (top-level) missing module named numpy.core.double - imported by numpy.core (top-level), numpy.linalg.linalg (top-level) missing module named numpy.core.single - imported by numpy.core (top-level), numpy.linalg.linalg (top-level) missing module named numpy.core.float32 - imported by numpy.core (top-level), numpy.testing._private.utils (top-level) missing module named numpy.core.intp - imported by numpy.core (top-level), numpy.testing._private.utils (top-level), numpy.linalg.linalg (top-level) missing module named numpy.eye - imported by numpy (delayed), numpy.core.numeric (delayed) missing module named dummy_thread - imported by numpy.core.arrayprint (conditional, optional) missing module named 'nose.util' - imported by numpy.testing._private.noseclasses (top-level) missing module named nose - imported by numpy.testing._private.utils (delayed, optional), numpy.testing._private.decorators (delayed), numpy.testing._private.noseclasses (top-level) missing module named win32pdh - imported by numpy.testing._private.utils (delayed, conditional) missing module named __svn_version__ - imported by numpy.f2py.__version__ (optional) missing module named numarray - imported by numpy.distutils.system_info (delayed, conditional, optional) missing module named Numeric - imported by numpy.distutils.system_info (delayed, conditional, optional) missing module named win32con - imported by distutils.msvccompiler (optional) missing module named _curses - imported by curses (top-level), curses.has_key (top-level) missing module named pytest - imported by numpy._pytesttester (delayed), pandas.util._tester (delayed, optional), pandas.util.testing (delayed, conditional, optional) missing module named future_builtins - imported by numpy.lib.npyio (conditional) missing module named cpickle - imported by numpy.compat.py3k (conditional) missing module named pickle5 - imported by numpy.compat.py3k (conditional, optional) missing module named numpy.histogramdd - imported by numpy (delayed), numpy.lib.twodim_base (delayed) missing module named numpy.lib.i0 - imported by numpy.lib (top-level), numpy.dual (top-level) missing module named 'scipy.sparse' - imported by pandas.core.sparse.scipy_sparse (delayed), pandas.core.arrays.sparse (delayed), pandas.core.dtypes.common (delayed, conditional, optional) missing module named botocore - imported by pandas.io.s3 (delayed) missing module named 'pyarrow.parquet' - imported by pandas.io.parquet (delayed) missing module named pyarrow - imported by pandas.io.feather_format (delayed) missing module named contextmanager - imported by dateutil.tz.tz (optional) runtime module named six.moves - imported by dateutil.tz.tz (top-level), dateutil.tz.win (top-level), dateutil.rrule (top-level) missing module named six.moves.range - imported by six.moves (top-level), dateutil.rrule (top-level) missing module named dateutil.tz.tzfile - imported by dateutil.tz (top-level), dateutil.zoneinfo (top-level) missing module named dateutil.tz.tzlocal - imported by dateutil.tz (top-level), dateutil.rrule (top-level) missing module named dateutil.tz.tzutc - imported by dateutil.tz (top-level), dateutil.rrule (top-level) missing module named PyQt4 - imported by pandas.io.clipboard.clipboards (delayed, optional), pandas.io.clipboard (delayed, conditional, optional) missing module named PyQt5 - imported by pandas.io.clipboard.clipboards (delayed, optional), pandas.io.clipboard (delayed, conditional, optional) missing module named qtpy - imported by pandas.io.clipboard.clipboards (delayed, optional), pandas.io.clipboard (delayed, conditional, optional) missing module named 'sqlalchemy.types' - imported by pandas.io.sql (delayed, conditional) missing module named 'sqlalchemy.schema' - imported by pandas.io.sql (delayed, conditional) missing module named sqlalchemy - imported by pandas.io.sql (delayed, conditional, optional) missing module named tables - imported by pandas.io.pytables (delayed, conditional) missing module named xlwt - imported by pandas.io.excel._xlwt (delayed) missing module named xlsxwriter - imported by pandas.io.excel._xlsxwriter (delayed) missing module named 'openpyxl.styles' - imported by pandas.io.excel._openpyxl (delayed) missing module named 'openpyxl.style' - imported by pandas.io.excel._openpyxl (delayed) missing module named openpyxl - imported by pandas.io.excel._openpyxl (delayed, conditional) missing module named xlrd - imported by pandas.io.excel._xlrd (delayed) missing module named 'odf.namespaces' - imported by pandas.io.excel._odfreader (delayed) missing module named 'odf.table' - imported by pandas.io.excel._odfreader (delayed) missing module named 'odf.opendocument' - imported by pandas.io.excel._odfreader (delayed) missing module named odf - imported by pandas.io.excel._odfreader (delayed) missing module named matplotlib - imported by pandas.plotting._matplotlib.boxplot (top-level), pandas.plotting._matplotlib.compat (delayed, optional), pandas.plotting._matplotlib.timeseries (delayed), pandas.plotting._matplotlib.core (delayed), pandas.io.formats.style (optional) missing module named 'matplotlib.pyplot' - imported by pandas.plotting._matplotlib.style (delayed), pandas.plotting._matplotlib.tools (delayed), pandas.plotting._matplotlib.core (delayed), pandas.plotting._matplotlib.timeseries (delayed), pandas.plotting._matplotlib.boxplot (delayed), pandas.plotting._matplotlib.hist (delayed), pandas.plotting._matplotlib.misc (delayed), pandas.plotting._matplotlib (delayed), pandas.io.formats.style (optional), pandas.util.testing (delayed) missing module named numpy.array - imported by numpy (top-level), numpy.ma.core (top-level), numpy.ma.extras (top-level), numpy.ma.mrecords (top-level), numpy.ctypeslib (top-level) missing module named numpy.recarray - imported by numpy (top-level), numpy.ma.mrecords (top-level) missing module named numpy.ndarray - imported by numpy (top-level), numpy.ma.core (top-level), numpy.ma.extras (top-level), numpy.ma.mrecords (top-level), numpy.ctypeslib (top-level), pandas.compat.numpy.function (top-level) missing module named numpy.dtype - imported by numpy (top-level), numpy.ma.mrecords (top-level), numpy.ctypeslib (top-level) missing module named numpy.bool_ - imported by numpy (top-level), numpy.ma.core (top-level), numpy.ma.mrecords (top-level) missing module named 'matplotlib.ticker' - imported by pandas.plotting._matplotlib.converter (top-level), pandas.plotting._matplotlib.tools (top-level), pandas.plotting._matplotlib.core (delayed) missing module named 'matplotlib.table' - imported by pandas.plotting._matplotlib.tools (top-level) missing module named 'matplotlib.colors' - imported by pandas.plotting._matplotlib.style (top-level) missing module named 'matplotlib.cm' - imported by pandas.plotting._matplotlib.style (top-level) missing module named 'matplotlib.patches' - imported by pandas.plotting._matplotlib.misc (top-level) missing module named 'matplotlib.lines' - imported by pandas.plotting._matplotlib.misc (top-level) missing module named 'matplotlib.axes' - imported by pandas.plotting._matplotlib.core (delayed) missing module named 'matplotlib.units' - imported by pandas.plotting._matplotlib.converter (top-level) missing module named 'matplotlib.transforms' - imported by pandas.plotting._matplotlib.converter (top-level) missing module named 'matplotlib.dates' - imported by pandas.plotting._matplotlib.converter (top-level) missing module named numpy.expand_dims - imported by numpy (top-level), numpy.ma.core (top-level) missing module named numpy.iscomplexobj - imported by numpy (top-level), numpy.ma.core (top-level) missing module named numpy.amin - imported by numpy (top-level), numpy.ma.core (top-level) missing module named numpy.amax - imported by numpy (top-level), numpy.ma.core (top-level) missing module named 'IPython.core' - imported by pandas.io.formats.printing (delayed, conditional) missing module named IPython - imported by pandas.io.formats.printing (delayed) missing module named s3fs - imported by pandas.io.common (delayed, optional) missing module named sets - imported by pytz.tzinfo (optional) missing module named numpy.random.randn - imported by numpy.random (top-level), pandas.util.testing (top-level) missing module named numpy.random.rand - imported by numpy.random (top-level), pandas.util.testing (top-level) missing module named hypothesis - imported by pandas.util._tester (delayed, optional) missing module named 'lxml.etree' - imported by pandas.io.html (delayed) missing module named 'lxml.html' - imported by pandas.io.html (delayed)
使用cmd启动appium报错,使用appium-desktop启动却不报错
环境: * 电脑:win 7 64位 * python 3.5 * PyCharm Community Edition 2017.1.1 x64 * 模拟器:逍遥模拟器 android 5.1.1 * appium -v 1.14.2 * appium-desktop-Setup-1.5.0-ia32.exe * jdk version "1.8.0_05" * nodejs : 10.16.3 以下是代码: ``` from appium import webdriver desired_caps={} desired_caps['platformName']='Android' desired_caps['platformVersion']='5.1.1' desired_caps['deviceName']='127.0.0.1:21503' desired_caps['app']=r'C:\Users\Administrator\Desktop\kaoyan3.1.0.apk' desired_caps['appActivity']='com.tal.kaoyan.ui.activity.SplashActivity' desired_caps['appPackage']='com.tal.kaoyan' desired_caps['noReset']='False' driver=webdriver.Remote('http://localhost:4723/wd/hub',desired_caps) ``` 以cmd启动 appium -a 127.0.0.1 -p 4723,运行pycharm,启动模拟器上APP,报错的信息: selenium.common.exceptions.WebDriverException: Message: An unknown server-side error occurred while processing the command. Original error: Failed to launch Appium Settings app: Condition unmet after 5191 ms. Timing out * 奇怪的是使用appium-desktop-Setup-1.5.0-ia32.exe启动appium,运行pycharm,启动模拟器上APP,却不报错,找不到原因,求大神分析一下!
cmd中运行from selenium import webdriver webdriver.Charome()报错
D:\>python Python 3.7.3 (v3.7.3:ef4ec6ed12, Mar 25 2019, 22:22:05) [MSC v.1916 64 bit (AMD64)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> from selenium import webdriver webdriver.Charome() File "<stdin>", line 1 from selenium import webdriver webdriver.Charome() ^ SyntaxError: invalid syntax
python+selenium无法用firefox加载网页
最近在学习selenium遇到的这个问题,只能打开firefox,之后就没法加载url,公司的电脑我试下是可以的,网上搜了很多资料也没有解决,很纠结,请大家帮忙看看... python代码: from selenium import webdriver from time import sleep s = webdriver.Firefox() s.get('https://www.baidu.com') s.find_element_by_id('kw').send_keys('python') sleep(3) s.find_element_by_id('su').click() sleep(5) s.quit() 打印的报错信息: Traceback (most recent call last): File "D:/python/new.py", line 5, in <module> s = webdriver.Firefox() File "C:\Python27\lib\site-packages\selenium-2.48.0-py2.7.egg\selenium\webdriver\firefox\webdriver.py", line 77, in __init__ self.binary, timeout), File "C:\Python27\lib\site-packages\selenium-2.48.0-py2.7.egg\selenium\webdriver\firefox\extension_connection.py", line 49, in __init__ self.binary.launch_browser(self.profile) File "C:\Python27\lib\site-packages\selenium-2.48.0-py2.7.egg\selenium\webdriver\firefox\firefox_binary.py", line 68, in launch_browser self._wait_until_connectable() File "C:\Python27\lib\site-packages\selenium-2.48.0-py2.7.egg\selenium\webdriver\firefox\firefox_binary.py", line 103, in _wait_until_connectable raise WebDriverException("Can't load the profile. Profile " selenium.common.exceptions.WebDriverException: Message: Can't load the profile. Profile Dir: %s If you specified a log_file in the FirefoxBinary constructor, check it for details. 我的环境是: python2.7.11 selenium2.48 Firefox42
Python2.7版本配置selenium之后,打开火狐驱动的时候报错。
Python2.7版本配置selenium之后,打开火狐驱动的时候提示“无法定位程序输入点 SymFromAddrW 于动态链接库 dbgehelp.dll”。cmd中显示 “selenium.common.exceptions.WebDriverException: Message: Service geckodriver unexpectedly exited. Status code was: -1073741511” ![图片说明](https://img-ask.csdn.net/upload/201802/05/1517819608_488445.png) ![图片说明](https://img-ask.csdn.net/upload/201802/05/1517819622_655270.png) 运行代码: from selenium import webdriver driver = webdriver.Firefox() driver.get("http://www.baidu.com") print driver.title driver.close ``` ```
selenium.common.exceptions.ElementClickInterceptedException解决办法
目标是定位提交元素,并点击,定位元素时,写的Xpath,可以精确指向元素,但无法定位 ![图片说明](https://img-ask.csdn.net/upload/201903/27/1553679098_701249.jpg) 1、原本的代码是 driver.find_element_by_xpath("html/body/div[12]/div[2]/div[1]/div[1]/div[3]/div[1]/button[2]/span").click() 报错信息如下: File "D:\Program Files\python\lib\site-packages\selenium-3.13.0-py3.7.egg\selenium\webdriver\remote\webelement.py", line 628, in _execute return self._parent.execute(command, params) File "D:\Program Files\python\lib\site-packages\selenium-3.13.0-py3.7.egg\selenium\webdriver\remote\webdriver.py", line 320, in execute self.error_handler.check_response(response) File "D:\Program Files\python\lib\site-packages\selenium-3.13.0-py3.7.egg\selenium\webdriver\remote\errorhandler.py", line 242, in check_response raise exception_class(message, screen, stacktrace) selenium.common.exceptions.ElementClickInterceptedException: Message: Element <span> is not clickable at point (1174,526) because another element <li class="ivu-dropdown-item"> obscures it 改成如下代码后即可定位并点击成功: tijiao=driver.find_element_by_xpath("html/body/div[12]/div[2]/div[1]/div[1]/div[3]/div[1]/button[2]/span") driver.execute_script("arguments[0].click();",tijiao)
运行ionic cordova platform add android不成功
各位大神: 在运用Ionic 开发手机APP的过程中遇到困难,ionic安装的是最新的长期支持版的,cordova安装的也是最新版的,但在运行ionic start shop tabs后,再运行ionic cordova platform add android为项目增加Android平台支持不成功,命令行窗口出现如下: C:\Users\WangQitong\jdshop>ionic cordova platform add android C:\Users\WangQitong\jdshop>"node" "C:\Users\WangQitong\AppData\Roaming\npm\\node_modules\ionic\bin\ionic" cordova platform add android > cordova.cmd platform add android C:\Users\WangQitong\jdshop>"node" "C:\Users\WangQitong\AppData\Roaming\npm\\node_modules\cordova\bin\cordova" "platform" "add" "android" Using cordova-fetch for cordova-android@^8.0.0 Failed to fetch platform cordova-android@^8.0.0 Probably this is either a connection problem, or platform spec is incorrect. Check your connection and platform name/version/URL. Error: npm: Command failed with exit code 4294963238 Error output: npm WARN rm not removing C:\Users\WangQitong\jdshop\node_modules\.bin\webdriver-manager.cmd as it wasn't installed by C:\Users\WangQitong\jdshop\node_modules\webdriver-manager npm WARN rm not removing C:\Users\WangQitong\jdshop\node_modules\.bin\webdriver-manager as it wasn't installed by C:\Users\WangQitong\jdshop\node_modules\webdriver-manager npm WARN rm not removing C:\Users\WangQitong\jdshop\node_modules\.bin\webdriver-manager.cmd as it wasn't installed by C:\Users\WangQitong\jdshop\node_modules\_webdriver-manager@12.1.7@webdriver-manager npm WARN rm not removing C:\Users\WangQitong\jdshop\node_modules\.bin\webdriver-manager as it wasn't installed by C:\Users\WangQitong\jdshop\node_modules\_webdriver-manager@12.1.7@webdriver-manager npm WARN webpack-dev-middleware@3.7.2 requires a peer of webpack@^4.0.0 but none is installed. You must install peer dependencies yourself. npm WARN The package @angular/compiler is included as both a dev and production dependency. npm ERR! code ENOENT npm ERR! syscall rename npm ERR! path C:\Users\WangQitong\jdshop\node_modules\_brace-expansion@1.1.11@brace-expansion\node_modules\balanced-match npm ERR! dest C:\Users\WangQitong\jdshop\node_modules\_brace-expansion@1.1.11@brace-expansion\node_modules\balanced-match npm ERR! errno -4058 npm ERR! enoent ENOENT: no such file or directory, rename 'C:\Users\WangQitong\jdshop\node_modules\_brace-expansion@1.1.11@brace-expansion\node_modules\balanced-match' -> 'C:\Users\WangQitong\jdshop\node_modules\_brace-expansion@1.1.11@brace-expansion\node_modules\balanced-match' npm ERR! enoent This is related to npm not being able to find a file. npm ERR! enoent npm ERR! A complete log of this run can be found in: npm ERR! C:\Users\WangQitong\AppData\Roaming\npm-cache\_logs\2019-11-01T12_41_07_880Z-debug.log > ionic cordova resources android --force > cordova-res.cmd android [cordova-res] [cordova-res] C:\Users\WangQitong\jdshop>"node" "C:\Users\WangQitong\AppData\Roaming\npm\\node_modules\cordova-res\bin\cordova-res" "android" [cordova-res] Generated 18 resources for android [cordova-res] Wrote to config.xml 请问是什么原因呢?
eclipse上运行Selenium脚本打开火狐后显示URL无效
eclipse里selenium-java-2.53.0.jar跟selenium-server-standalone-2.53.0.jar两个包都导进去了,试运行代码如下: package TestProject; import org.openqa.selenium.WebDriver; import org.openqa.selenium.firefox.FirefoxDriver; public class TestProject01 { public static void main(String args[]){ WebDriver driver = new FirefoxDriver(); driver.get("http://www.baidu.com/"); } } 火狐能正常弹出,但是显示此URL无效 请问该如何解决?
python 用selenium写爬虫打开火狐
import os from selenium import webdriver browser = webdriver.Firefox() print driver.get('http://v.qq.com/x/cover/d4rkjpicdk01ybo.html') 这么写为什么会报错? Traceback (most recent call last): File "C:\Users\JAY\Desktop\2.py", line 4, in <module> browser = webdriver.Firefox() File "C:\Python27\lib\site-packages\selenium-3.0.0b2-py2.7.egg\selenium\webdriver\firefox\webdriver.py", line 65, in __init__ self.service.start() File "C:\Python27\lib\site-packages\selenium-3.0.0b2-py2.7.egg\selenium\webdriver\common\service.py", line 71, in start os.path.basename(self.path), self.start_error_message) WebDriverException: Message: 'geckodriver' executable needs to be in PATH. 这错误是什么意思?
selenium操作元素时候报 Element is no longer valid
selenium能够定位到元素,但是操作元素时候报 Element is no longer valid from selenium import webdriver import time browser = webdriver.Ie() browser.maximize_window() browser.get('URL') elem = browser.find_element_by_css_selector("#username") elem.click()___ 网上给的方法已经都试过了,什么等待,refresh页面等等,都不可以,有没有大神帮忙解决一下呢,错误信息如下 elem.click() File "C:\Python27\lib\site-packages\selenium-2.52.0-py2.7.egg\selenium\webdriver\remote\webelement.py", line 75, in click self._execute(Command.CLICK_ELEMENT) File "C:\Python27\lib\site-packages\selenium-2.52.0-py2.7.egg\selenium\webdriver\remote\webelement.py", line 469, in _execute return self._parent.execute(command, params) File "C:\Python27\lib\site-packages\selenium-2.52.0-py2.7.egg\selenium\webdriver\remote\webdriver.py", line 201, in execute self.error_handler.check_response(response) File "C:\Python27\lib\site-packages\selenium-2.52.0-py2.7.egg\selenium\webdriver\remote\errorhandler.py", line 194, in check_response raise exception_class(message, screen, stacktrace) selenium.common.exceptions.StaleElementReferenceException: Message: Element is no longer valid
Python3.6+Selenium打不开Ie浏览器
【环境信息】 Python3.6+Selenium3.0.2+IE10+win7 【问题描述】 1、用如下代码打不开IE浏览器,但是能打开火狐浏览器 import unittest import os from selenium import webdriver class TestAutoMethods(unittest.TestCase): #打开Firefox浏览器 def test_openbrower(self): browser = webdriver.Firefox() browser.get("http://www.baidu.com") def test_FirstVase(self): #ie_driver = os.path.abspath(r"C:\Program Files(x86)\Internet Explorer\IEDriverServer.exe") #os.environ["webdriver.ie.driver"] = ie_driver browser = webdriver.Ie() browser.get("http://www.youdao.com") if __name__ == '__main__': unittest.main() 2、报错信息 复制代码 Error Traceback (most recent call last): File "D:\Users\chenle\PycharmProjects\untitled\test\FirstExam.py", line 14, in test_FirstVase browser = webdriver.Ie() File "C:\Program Files\Python36\lib\site-packages\selenium\webdriver\ie\webdriver.py", line 57, in __init__ desired_capabilities=capabilities) File "C:\Program Files\Python36\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 92, in __init__ self.start_session(desired_capabilities, browser_profile) File "C:\Program Files\Python36\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 179, in start_session response = self.execute(Command.NEW_SESSION, capabilities) File "C:\Program Files\Python36\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 234, in execute response = self.command_executor.execute(driver_command, params) File "C:\Program Files\Python36\lib\site-packages\selenium\webdriver\remote\remote_connection.py", line 408, in execute return self._request(command_info[0], url, body=data) File "C:\Program Files\Python36\lib\site-packages\selenium\webdriver\remote\remote_connection.py", line 478, in _request resp = opener.open(request, timeout=self._timeout) File "C:\Program Files\Python36\lib\urllib\request.py", line 526, in open response = self._open(req, data) File "C:\Program Files\Python36\lib\urllib\request.py", line 544, in _open '_open', req) File "C:\Program Files\Python36\lib\urllib\request.py", line 504, in _call_chain result = func(*args) File "C:\Program Files\Python36\lib\urllib\request.py", line 1346, in http_open return self.do_open(http.client.HTTPConnection, req) File "C:\Program Files\Python36\lib\urllib\request.py", line 1321, in do_open r = h.getresponse() File "C:\Program Files\Python36\lib\http\client.py", line 1331, in getresponse response.begin() File "C:\Program Files\Python36\lib\http\client.py", line 297, in begin version, status, reason = self._read_status() File "C:\Program Files\Python36\lib\http\client.py", line 266, in _read_status raise RemoteDisconnected("Remote end closed connection without" http.client.RemoteDisconnected: Remote end closed connection without response
webdriver 无法定位元素(python)
使用python运行webdriver时无法定位到查看详情元素。 我试图使用webdriver点击网页中的查看详情链接,但无法找到元素。 已经试过的方法:find_element_by_link_text; find_element_by_xpath; find_element_by_partial_link_text... ps: 没有在html文件中找到frame关键词。 ![图片说明](https://img-ask.csdn.net/upload/201912/23/1577088625_204504.png) ![图片说明](https://img-ask.csdn.net/upload/201912/23/1577088635_48885.png) ![图片说明](https://img-ask.csdn.net/upload/201912/23/1577088645_878890.png)
求助:selenium+webdriver.Chrome打开浏览器地址栏只显示data;怎么解决?
用selenium+webdriver打开浏览器,只显示data; Chromedriver与chrome版本相对应,python、python\scripts、Chromedriver环境变量都配置好了,但是还是打不开浏览器 代码如下: ![图片说明](https://img-ask.csdn.net/upload/201911/30/1575104145_327134.png) 运行结果报错: ![图片说明](https://img-ask.csdn.net/upload/201911/30/1575104238_288471.png) 请问该如何解决?
linux 执行python 异常 WebDriverException
python执行日志: [root@localhost opt]# python ./tbacnt_check.py Traceback (most recent call last): File "./tbacnt_check.py", line 36, in <module> driver = webdriver.Firefox(profile) File "/usr/local/lib/python3.5/site-packages/selenium/webdriver/firefox/webdriver.py", line 167, in __init__ keep_alive=True) File "/usr/local/lib/python3.5/site-packages/selenium/webdriver/remote/webdriver.py", line 156, in __init__ self.start_session(capabilities, browser_profile) File "/usr/local/lib/python3.5/site-packages/selenium/webdriver/remote/webdriver.py", line 251, in start_session response = self.execute(Command.NEW_SESSION, parameters) File "/usr/local/lib/python3.5/site-packages/selenium/webdriver/remote/webdriver.py", line 320, in execute self.error_handler.check_response(response) File "/usr/local/lib/python3.5/site-packages/selenium/webdriver/remote/errorhandler.py", line 242, in check_response raise exception_class(message, screen, stacktrace) selenium.common.exceptions.WebDriverException: Message: Process unexpectedly closed with status: 1 下面是火狐 驱动日志 [root@localhost opt]# cat geckodriver.log 1533960909134 geckodriver INFO geckodriver 0.19.1 1533960909139 geckodriver INFO Listening on 127.0.0.1:58648 1533960910337 mozrunner::runner INFO Running command: "/usr/bin/firefox" "-marionette" "-profile" "/tmp/rust_mozprofile.YfTd8Xc4aSZ4" Error: no DISPLAY environment variable specified
启动selenium控制浏览器报错firefox (OS系统)
在用selenium调用Firefox时,跳出错误,没搞明白,求高人指点!!! ``` >>> from selenium import webdriver >>> browser = webdriver.Firefox() Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/selenium/webdriver/common/service.py", line 76, in start stdin=PIPE) File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/subprocess.py", line 775, in __init__ restore_signals, start_new_session) File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/subprocess.py", line 1522, in _execute_child raise child_exception_type(errno_num, err_msg, err_filename) FileNotFoundError: [Errno 2] No such file or directory: 'geckodriver': 'geckodriver' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "<pyshell#61>", line 1, in <module> browser = webdriver.Firefox() File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/selenium/webdriver/firefox/webdriver.py", line 164, in __init__ self.service.start() File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/selenium/webdriver/common/service.py", line 83, in start os.path.basename(self.path), self.start_error_message) selenium.common.exceptions.WebDriverException: Message: 'geckodriver' executable needs to be in PATH. ```
求问:ModuleNotFoundError: No module named 'tencent.settings'
主 import scrapy from scrapy import signals from scrapy.xlib.pydispatch import dispatcher from selenium import webdriver from tencent.items import TencentItem class QqnewsSpider(scrapy.Spider): name = 'qqnews' allowed_domains = ['news.qq.com'] start_urls = ['https://news.qq.com/'] def __init__(self, **kwargs): options = webdriver.ChromeOptions() prefs = {"profile.managed_default_content_settings.images“,2) options.add_experimental_option("prefs", prefs) # options.add_argument("--headless") self.browser = webdriver.Chrome(chrome_options=options, executable_path="/Users/bloodhound/WorkProject/Behind/Full-crawl/chromedriver") super(QqnewsSpider, self).__init__() dispatcher.connect(self.spider_closed, signals.spider_closed) def spider_closed(self, spider): # 当爬虫退出的时候关闭浏览器 print("spider closed") self.browser.quit() ``` settings.py BOT_NAME = 'tencent' SPIDER_MODULES = ['tencent.spiders'] NEWSPIDER_MODULE = 'tencent.spiders' LOG_LEVEL = 'WARNING' # Crawl responsibly by identifying yourself (and your website) on the user-agent #USER_AGENT = 'tencent (+http://www.yourdomain.com)' # Obey robots.txt rules ROBOTSTXT_OBEY = False USER_AGENT = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36' DOWNLOADER_MIDDLEWARES = { 'tencent.middlewares.JSPageMiddleware': 1, } ITEM_PIPELINES = { 'tencent.pipelines.TencentPipeline': 300, } ```
终于明白阿里百度这样的大公司,为什么面试经常拿ThreadLocal考验求职者了
点击上面↑「爱开发」关注我们每晚10点,捕获技术思考和创业资源洞察什么是ThreadLocalThreadLocal是一个本地线程副本变量工具类,各个线程都拥有一份线程私有的数
程序员必须掌握的核心算法有哪些?
由于我之前一直强调数据结构以及算法学习的重要性,所以就有一些读者经常问我,数据结构与算法应该要学习到哪个程度呢?,说实话,这个问题我不知道要怎么回答你,主要取决于你想学习到哪些程度,不过针对这个问题,我稍微总结一下我学过的算法知识点,以及我觉得值得学习的算法。这些算法与数据结构的学习大多数是零散的,并没有一本把他们全部覆盖的书籍。下面是我觉得值得学习的一些算法以及数据结构,当然,我也会整理一些看过...
《奇巧淫技》系列-python!!每天早上八点自动发送天气预报邮件到QQ邮箱
此博客仅为我业余记录文章所用,发布到此,仅供网友阅读参考,如有侵权,请通知我,我会删掉。 补充 有不少读者留言说本文章没有用,因为天气预报直接打开手机就可以收到了,为何要多此一举发送到邮箱呢!!!那我在这里只能说:因为你没用,所以你没用!!! 这里主要介绍的是思路,不是天气预报!不是天气预报!!不是天气预报!!!天气预报只是用于举例。请各位不要再刚了!!! 下面是我会用到的两个场景: 每日下
面试官问我:什么是消息队列?什么场景需要他?用了会出现什么问题?
你知道的越多,你不知道的越多 点赞再看,养成习惯 GitHub上已经开源 https://github.com/JavaFamily 有一线大厂面试点脑图、个人联系方式,欢迎Star和完善 前言 消息队列在互联网技术存储方面使用如此广泛,几乎所有的后端技术面试官都要在消息队列的使用和原理方面对小伙伴们进行360°的刁难。 作为一个在互联网公司面一次拿一次Offer的面霸,打败了无数
8年经验面试官详解 Java 面试秘诀
    作者 | 胡书敏 责编 | 刘静 出品 | CSDN(ID:CSDNnews) 本人目前在一家知名外企担任架构师,而且最近八年来,在多家外企和互联网公司担任Java技术面试官,前后累计面试了有两三百位候选人。在本文里,就将结合本人的面试经验,针对Java初学者、Java初级开发和Java开发,给出若干准备简历和准备面试的建议。   Java程序员准备和投递简历的实
究竟你适不适合买Mac?
我清晰的记得,刚买的macbook pro回到家,开机后第一件事情,就是上了淘宝网,花了500元钱,找了一个上门维修电脑的师傅,上门给我装了一个windows系统。。。。。。 表砍我。。。 当时买mac的初衷,只是想要个固态硬盘的笔记本,用来运行一些复杂的扑克软件。而看了当时所有的SSD笔记本后,最终决定,还是买个好(xiong)看(da)的。 已经有好几个朋友问我mba怎么样了,所以今天尽量客观
程序员一般通过什么途径接私活?
二哥,你好,我想知道一般程序猿都如何接私活,我也想接,能告诉我一些方法吗? 上面是一个读者“烦不烦”问我的一个问题。其实不止是“烦不烦”,还有很多读者问过我类似这样的问题。 我接的私活不算多,挣到的钱也没有多少,加起来不到 20W。说实话,这个数目说出来我是有点心虚的,毕竟太少了,大家轻喷。但我想,恰好配得上“一般程序员”这个称号啊。毕竟苍蝇再小也是肉,我也算是有经验的人了。 唾弃接私活、做外
大学四年自学走来,这些珍藏的「实用工具/学习网站」我全贡献出来了
知乎高赞:文中列举了互联网一线大厂程序员都在用的工具集合,涉及面非常广,小白和老手都可以进来看看,或许有新收获。
《阿里巴巴开发手册》读书笔记-编程规约
Java编程规约命名风格 命名风格 类名使用UpperCamelCase风格 方法名,参数名,成员变量,局部变量都统一使用lowerCamelcase风格 常量命名全部大写,单词间用下划线隔开, 力求语义表达完整清楚,不要嫌名字长 ...
Python爬虫爬取淘宝,京东商品信息
小编是一个理科生,不善长说一些废话。简单介绍下原理然后直接上代码。 使用的工具(Python+pycharm2019.3+selenium+xpath+chromedriver)其中要使用pycharm也可以私聊我selenium是一个框架可以通过pip下载 pip install selenium -i https://pypi.tuna.tsinghua.edu.cn/simple/ 
阿里程序员写了一个新手都写不出的低级bug,被骂惨了。
你知道的越多,你不知道的越多 点赞再看,养成习惯 本文 GitHub https://github.com/JavaFamily 已收录,有一线大厂面试点思维导图,也整理了很多我的文档,欢迎Star和完善,大家面试可以参照考点复习,希望我们一起有点东西。 前前言 为啥今天有个前前言呢? 因为你们的丙丙啊,昨天有牌面了哟,直接被微信官方推荐,知乎推荐,也就仅仅是还行吧(心里乐开花)
Java工作4年来应聘要16K最后没要,细节如下。。。
前奏: 今天2B哥和大家分享一位前几天面试的一位应聘者,工作4年26岁,统招本科。 以下就是他的简历和面试情况。 基本情况: 专业技能: 1、&nbsp;熟悉Sping了解SpringMVC、SpringBoot、Mybatis等框架、了解SpringCloud微服务 2、&nbsp;熟悉常用项目管理工具:SVN、GIT、MAVEN、Jenkins 3、&nbsp;熟悉Nginx、tomca
Python爬虫精简步骤1 获取数据
爬虫的工作分为四步: 1.获取数据。爬虫程序会根据我们提供的网址,向服务器发起请求,然后返回数据。 2.解析数据。爬虫程序会把服务器返回的数据解析成我们能读懂的格式。 3.提取数据。爬虫程序再从中提取出我们需要的数据。 4.储存数据。爬虫程序把这些有用的数据保存起来,便于你日后的使用和分析。 这一篇的内容就是:获取数据。 首先,我们将会利用一个强大的库——requests来获取数据。 在电脑上安装
Python绘图,圣诞树,花,爱心 | Turtle篇
1.画圣诞树 import turtle screen = turtle.Screen() screen.setup(800,600) circle = turtle.Turtle() circle.shape('circle') circle.color('red') circle.speed('fastest') circle.up() square = turtle.Turtle()
作为一个程序员,CPU的这些硬核知识你必须会!
CPU对每个程序员来说,是个既熟悉又陌生的东西? 如果你只知道CPU是中央处理器的话,那可能对你并没有什么用,那么作为程序员的我们,必须要搞懂的就是CPU这家伙是如何运行的,尤其要搞懂它里面的寄存器是怎么一回事,因为这将让你从底层明白程序的运行机制。 随我一起,来好好认识下CPU这货吧 把CPU掰开来看 对于CPU来说,我们首先就要搞明白它是怎么回事,也就是它的内部构造,当然,CPU那么牛的一个东
破14亿,Python分析我国存在哪些人口危机!
2020年1月17日,国家统计局发布了2019年国民经济报告,报告中指出我国人口突破14亿。 猪哥的朋友圈被14亿人口刷屏,但是很多人并没有看到我国复杂的人口问题:老龄化、男女比例失衡、生育率下降、人口红利下降等。 今天我们就来分析一下我们国家的人口数据吧! 更多有趣分析教程,扫描下方二维码关注vx公号「裸睡的猪」 即可查看! 一、背景 1.人口突破14亿 2020年1月17日,国家统计局发布
听说想当黑客的都玩过这个Monyer游戏(1~14攻略)
第零关 进入传送门开始第0关(游戏链接) 请点击链接进入第1关: 连接在左边→ ←连接在右边 看不到啊。。。。(只能看到一堆大佬做完的留名,也能看到菜鸡的我,在后面~~) 直接fn+f12吧 &lt;span&gt;连接在左边→&lt;/span&gt; &lt;a href="first.php"&gt;&lt;/a&gt; &lt;span&gt;←连接在右边&lt;/span&gt; o
在家远程办公效率低?那你一定要收好这个「在家办公」神器!
相信大家都已经收到国务院延长春节假期的消息,接下来,在家远程办公可能将会持续一段时间。 但是问题来了。远程办公不是人在电脑前就当坐班了,相反,对于沟通效率,文件协作,以及信息安全都有着极高的要求。有着非常多的挑战,比如: 1在异地互相不见面的会议上,如何提高沟通效率? 2文件之间的来往反馈如何做到及时性?如何保证信息安全? 3如何规划安排每天工作,以及如何进行成果验收? ......
作为一个程序员,内存和磁盘的这些事情,你不得不知道啊!!!
截止目前,我已经分享了如下几篇文章: 一个程序在计算机中是如何运行的?超级干货!!! 作为一个程序员,CPU的这些硬核知识你必须会! 作为一个程序员,内存的这些硬核知识你必须懂! 这些知识可以说是我们之前都不太重视的基础知识,可能大家在上大学的时候都学习过了,但是嘞,当时由于老师讲解的没那么有趣,又加上这些知识本身就比较枯燥,所以嘞,大家当初几乎等于没学。 再说啦,学习这些,也看不出来有什么用啊!
别低估自己的直觉,也别高估自己的智商
所有群全部吵翻天,朋友圈全部沦陷,公众号疯狂转发。这两周没怎么发原创,只发新闻,可能有人注意到了。我不是懒,是文章写了却没发,因为大家的关注力始终在这次的疫情上面,发了也没人看。当然,我...
这个世界上人真的分三六九等,你信吗?
偶然间,在知乎上看到一个问题 一时间,勾起了我深深的回忆。 以前在厂里打过两次工,做过家教,干过辅导班,做过中介。零下几度的晚上,贴过广告,满脸、满手地长冻疮。   再回首那段岁月,虽然苦,但让我学会了坚持和忍耐。让我明白了,在这个世界上,无论环境多么的恶劣,只要心存希望,星星之火,亦可燎原。   下文是原回答,希望能对你能有所启发。   如果我说,这个世界上人真的分三六九等,
为什么听过很多道理,依然过不好这一生?
记录学习笔记是一个重要的习惯,不希望学习过的东西成为过眼云烟。做总结的同时也是一次复盘思考的过程。 本文是根据阅读得到 App上《万维钢·精英日课》部分文章后所做的一点笔记和思考。学习是一个系统的过程,思维模型的建立需要相对完整的学习和思考过程。以下观点是在碎片化阅读后总结的一点心得总结。
B 站上有哪些很好的学习资源?
哇说起B站,在小九眼里就是宝藏般的存在,放年假宅在家时一天刷6、7个小时不在话下,更别提今年的跨年晚会,我简直是跪着看完的!! 最早大家聚在在B站是为了追番,再后来我在上面刷欧美新歌和漂亮小姐姐的舞蹈视频,最近两年我和周围的朋友们已经把B站当作学习教室了,而且学习成本还免费,真是个励志的好平台ヽ(.◕ฺˇд ˇ◕ฺ;)ノ 下面我们就来盘点一下B站上优质的学习资源: 综合类 Oeasy: 综合
如何优雅地打印一个Java对象?
你好呀,我是沉默王二,一个和黄家驹一样身高,和刘德华一样颜值的程序员。虽然已经写了十多年的 Java 代码,但仍然觉得自己是个菜鸟(请允许我惭愧一下)。 在一个月黑风高的夜晚,我思前想后,觉得再也不能这么蹉跎下去了。于是痛下决心,准备通过输出的方式倒逼输入,以此来修炼自己的内功,从而进阶成为一名真正意义上的大神。与此同时,希望这些文章能够帮助到更多的读者,让大家在学习的路上不再寂寞、空虚和冷。 ...
雷火神山直播超两亿,Web播放器事件监听是怎么实现的?
Web播放器解决了在手机浏览器和PC浏览器上播放音视频数据的问题,让视音频内容可以不依赖用户安装App,就能进行播放以及在社交平台进行传播。在视频业务大数据平台中,播放数据的统计分析非常重要,所以Web播放器在使用过程中,需要对其内部的数据进行收集并上报至服务端,此时,就需要对发生在其内部的一些播放行为进行事件监听。 那么Web播放器事件监听是怎么实现的呢? 01 监听事件明细表 名
3万字总结,Mysql优化之精髓
本文知识点较多,篇幅较长,请耐心学习 MySQL已经成为时下关系型数据库产品的中坚力量,备受互联网大厂的青睐,出门面试想进BAT,想拿高工资,不会点MySQL优化知识,拿offer的成功率会大大下降。 为什么要优化 系统的吞吐量瓶颈往往出现在数据库的访问速度上 随着应用程序的运行,数据库的中的数据会越来越多,处理时间会相应变慢 数据是存放在磁盘上的,读写速度无法和内存相比 如何优化 设计
Linux 命令(122)—— watch 命令
1.命令简介 2.命令格式 3.选项说明 4.常用示例 参考文献 [1] watch(1) manual
Linux 命令(121)—— cal 命令
1.命令简介 2.命令格式 3.选项说明 4.常用示例 参考文献 [1] cal(1) manual
记jsp+servlet+jdbc实现的新闻管理系统
1.工具:eclipse+SQLyog 2.介绍:实现的内容就是显示新闻的基本信息,然后一个增删改查的操作。 3.数据库表设计 列名 中文名称 数据类型 长度 非空 newsId 文章ID int 11 √ newsTitle 文章标题 varchar 20 √ newsContent 文章内容 text newsStatus 是否审核 varchar 10 news...
Python新型冠状病毒疫情数据自动爬取+统计+发送报告+数据屏幕(三)发送篇
今天介绍的项目是使用 Itchat 发送统计报告 项目功能设计: 定时爬取疫情数据存入Mysql 进行数据分析制作疫情报告 使用itchat给亲人朋友发送分析报告(本文) 基于Django做数据屏幕 使用Tableau做数据分析 来看看最终效果 目前已经完成,预计2月12日前更新 使用 itchat 发送数据统计报告 itchat 是一个基于 web微信的一个框架,但微信官方并不允
相关热词 c# 数组类型 泛型约束 c#的赛狗日程序 c# 传递数组 可变参数 c# 生成存储过程 c# list 补集 c#获得所有窗体 c# 当前秒数转成年月日 c#中的枚举 c# 计算校验和 连续随机数不重复c#
立即提问