Django 初学者 Ran 0 tests in 0.000s OK 问题

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在学习django过程中的示例,但一直 Ran 0 tests in 0.000s

查阅了一些答案,进行补充,改成这样(我也不知道对不对)

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但依旧还是Ran 0 tests in 0.000s
可以请教一下吗!!bang'bang'm

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新上手django,为了测试,对其中一个app 进行了 很多次 makemigrations 和 migrate(主要是做了数据库的变更),现在报错, 显示django.db.utils.ProgrammingError: (1146, "Table 'xxx' doesn't exist") 如下图所示: ![图片说明](https://img-ask.csdn.net/upload/201812/26/1545814038_212243.png) 但是这个表明明存在:如下图所示: ![图片说明](https://img-ask.csdn.net/upload/201812/26/1545814070_231776.png) 以下为makemigrations的信息: 001initial.py ![图片说明](https://img-ask.csdn.net/upload/201812/26/1545814223_588095.png) 002.py ![图片说明](https://img-ask.csdn.net/upload/201812/26/1545814296_762669.png) 003.py ![图片说明](https://img-ask.csdn.net/upload/201812/26/1545814308_915151.png) 004.py ![图片说明](https://img-ask.csdn.net/upload/201812/26/1545814322_193149.png) 005.py ![图片说明](https://img-ask.csdn.net/upload/201812/26/1545814330_536118.png) 第二个问题: 其中还有几次报错是 1054 Unknown column ‘tableName.id' in 'field list' 但是表中并没有id这个字段,是什么原因呢? 是不是这个app的model没有映射到相应的数据表呢?

pycharm Django setting.py文件配置问题

INSTALLED_APPS = [ 'django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', # 'app1.apps.App1Config', 'app1', ] 注:最后一行本没有,我自己加上的。本来有加注释的这行(让我注释掉了)。 以上代码,我看别的教程是没有我加注释这行的,而我自己用pycharm建的Django项目 有加注释的这行。所有教程都说让我加上最后一行,而没有提注释这行,新手表示注释这行很奇怪啊,请问大神这行是干什么的??

No module named 'django.db.backends.mysql

![图片说明](https://img-ask.csdn.net/upload/201708/16/1502882500_765584.png) 在本地测试一切正常,一旦上传服务器就报这样的错误。python3.4+mysql5.6+pymysql

Django配置MySQL,运行python manage.py startapp myapp 报错!!

python manage.py startapp myapp Traceback (most recent call last): File "manage.py", line 21, in <module> main() File "manage.py", line 17, in main execute_from_command_line(sys.argv) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\management\__init__.py", line 381, in execute_from_command_line utility.execute() File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\management\__init__.py", line 357, in execute django.setup() File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\__init__.py", line 24, in setup apps.populate(settings.INSTALLED_APPS) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\apps\registry.py", line 114, in populate app_config.import_models() File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\apps\config.py", line 211, in import_models self.models_module = import_module(models_module_name) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\importlib\__init__.py", line 127, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "<frozen importlib._bootstrap>", line 1006, in _gcd_import File "<frozen importlib._bootstrap>", line 983, in _find_and_load File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 677, in _load_unlocked File "<frozen importlib._bootstrap_external>", line 728, in exec_module File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\contrib\auth\models.py", line 2, in <module> from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\contrib\auth\base_user.py", line 47, in <module> class AbstractBaseUser(models.Model): File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\models\base.py", line 117, in __new__ new_class.add_to_class('_meta', Options(meta, app_label)) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\models\base.py", line 321, in add_to_class value.contribute_to_class(cls, name) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\models\options.py", line 204, in contribute_to_class self.db_table = truncate_name(self.db_table, connection.ops.max_name_length()) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\__init__.py", line 28, in __getattr__ return getattr(connections[DEFAULT_DB_ALIAS], item) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\utils.py", line 201, in __getitem__ backend = load_backend(db['ENGINE']) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\utils.py", line 110, in load_backend return import_module('%s.base' % backend_name) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\importlib\__init__.py", line 127, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\backends\mysql\base.py", line 36, in <module> raise ImproperlyConfigured('mysqlclient 1.3.13 or newer is required; you have %s.' % Database.__version__) django.core.exceptions.ImproperlyConfigured: mysqlclient 1.3.13 or newer is required; you have 0.9.3. da

django项目 makemigrations时出现nodenotfounderror错误。

如题 makemigrations时出现 django.db.migrations.graph.NodeNotFoundError: Migration blog.0001_initial dependencies reference nonexistent parent node (u'auth', u'0007_alter_validators_add_error_messages')错误 求大家解答! 问题源文件: # -*- coding: utf-8 -*- # Generated by Django 1.9 on 2016-02-24 10:34 from __future__ import unicode_literals import blog.models from django.conf import settings import django.contrib.auth.models import django.core.validators from django.db import migrations, models import django.db.models.deletion import django.utils.timezone class Migration(migrations.Migration): initial = True dependencies = [ ('tagging', '0001_initial'), ('auth', '0007_alter_validators_add_error_messages'), ] operations = [ migrations.CreateModel( name='User', fields=[ ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')), ('password', models.CharField(max_length=128, verbose_name='password')), ('last_login', models.DateTimeField(blank=True, null=True, verbose_name='last login')), ('is_superuser', models.BooleanField(default=False, help_text='Designates that this user has all permissions without explicitly assigning them.', verbose_name='superuser status')), ('username', models.CharField(error_messages={'unique': 'A user with that username already exists.'}, help_text='Required. 30 characters or fewer. Letters, digits and @/./+/-/_ only.', max_length=30, unique=True, validators=[django.core.validators.RegexValidator('^[\\w.@+-]+$', 'Enter a valid username. This value may contain only letters, numbers and @/./+/-/_ characters.')], verbose_name='username')), ('first_name', models.CharField(blank=True, max_length=30, verbose_name='first name')), ('last_name', models.CharField(blank=True, max_length=30, verbose_name='last name')), ('email', models.EmailField(blank=True, max_length=254, verbose_name='email address')), ('is_staff', models.BooleanField(default=False, help_text='Designates whether the user can log into this admin site.', verbose_name='staff status')), ('is_active', models.BooleanField(default=True, help_text='Designates whether this user should be treated as active. Unselect this instead of deleting accounts.', verbose_name='active')), ('date_joined', models.DateTimeField(default=django.utils.timezone.now, verbose_name='date joined')), ('name', models.CharField(max_length=12)), ('avatar_path', models.ImageField(default='/static/image/avatar_default.jpg', upload_to='/avatar')), ], options={ 'abstract': False, 'verbose_name': 'user', 'verbose_name_plural': 'users', }, managers=[ ('objects', django.contrib.auth.models.UserManager()), ], ), migrations.CreateModel( name='Carousel', fields=[ ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')), ('title', models.CharField(max_length=100)), ('img', models.ImageField(upload_to='/carousel')), ('create_time', models.DateTimeField(auto_now_add=True)), ], options={ 'ordering': ['-create_time'], }, ), migrations.CreateModel( name='Catalogue', fields=[ ('name', models.CharField(max_length=20, primary_key=True, serialize=False)), ], ), migrations.CreateModel( name='Comment', fields=[ ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')), ('publish_Time', models.DateTimeField(auto_now_add=True)), ('ip_address', models.GenericIPAddressField()), ('content', models.CharField(max_length=200)), ('isDelete', models.BooleanField(default=False)), ('author', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)), ], ), migrations.CreateModel( name='Editor', fields=[ ('name', models.CharField(max_length=20, primary_key=True, serialize=False)), ('avaliable', models.BooleanField(default=True)), ], ), migrations.CreateModel( name='Post', fields=[ ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')), ('title', models.CharField(max_length=100)), ('publish_time', models.DateTimeField(auto_now_add=True)), ('modify_time', models.DateTimeField(auto_now_add=True)), ('content', models.TextField()), ('tag', blog.models.TagField_Mine(blank=True, max_length=255)), ('view_count', models.IntegerField(default=0, editable=False)), ('status', models.SmallIntegerField(choices=[(0, '\u8349\u7a3f'), (1, '\u53d1\u5e03'), (2, '\u5220\u9664')], default=0)), ('author', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)), ('catalogue', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='blog.Catalogue')), ('editor_choice', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='blog.Editor')), ], options={ 'ordering': ['-modify_time'], }, ), migrations.CreateModel( name='Repository', fields=[ ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')), ('title', models.CharField(max_length=100)), ('publish_time', models.DateTimeField(auto_now_add=True)), ('author', models.CharField(max_length=20)), ('content', models.TextField()), ('view_count', models.IntegerField(default=0, editable=False)), ('tag', models.ManyToManyField(blank=True, default='', to='tagging.Tag')), ], options={ 'ordering': ['-publish_time'], }, ), migrations.AddField( model_name='comment', name='post', field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='blog.Post'), ), migrations.AddField( model_name='carousel', name='post', field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='blog.Post'), ), migrations.AddField( model_name='user', name='editor_choice', field=models.ForeignKey(blank=True, default='tinyMCE', null=True, on_delete=django.db.models.deletion.CASCADE, to='blog.Editor'), ), migrations.AddField( model_name='user', name='groups', field=models.ManyToManyField(blank=True, help_text='The groups this user belongs to. A user will get all permissions granted to each of their groups.', related_name='user_set', related_query_name='user', to='auth.Group', verbose_name='groups'), ), migrations.AddField( model_name='user', name='user_permissions', field=models.ManyToManyField(blank=True, help_text='Specific permissions for this user.', related_name='user_set', related_query_name='user', to='auth.Permission', verbose_name='user permissions'), ), ]

django blog.models.DoesNotExist:

我的models: ![图片说明](https://img-ask.csdn.net/upload/201805/18/1526611849_55142.png) shell中: ![图片说明](https://img-ask.csdn.net/upload/201805/18/1526611920_105005.png) 数据已经存在db.sqlite3中了,请问怎么还显示blog.models.DoesNotExist: BlogArticles matching query does not exist.

django中创建表python manage.py makemigrations出现以下错误 ,望大神指导

![图片说明](https://img-ask.csdn.net/up load/201812/05/1544007099_480215.jpg) ![图片说明](https://img-ask.csdn.net/upload/201812/05/1544012043_872565.jpg) C:\Users\Administrator\PycharmProjects\mysite>python manage.py makemigrations Traceback (most recent call last): File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\backend s\base\base.py", line 216, in ensure_connection self.connect() File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\backend s\base\base.py", line 194, in connect self.connection = self.get_new_connection(conn_params) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\backend s\mysql\base.py", line 227, in get_new_connection return Database.connect(**conn_params) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\pymysql\__init__. py", line 94, in Connect return Connection(*args, **kwargs) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\pymysql\connectio ns.py", line 327, in __init__ self.connect() File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\pymysql\connectio ns.py", line 598, in connect self._request_authentication() File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\pymysql\connectio ns.py", line 873, in _request_authentication auth_packet = _auth.caching_sha2_password_auth(self, auth_packet) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\pymysql\_auth.py" , line 253, in caching_sha2_password_auth pkt = _roundtrip(conn, data) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\pymysql\_auth.py" , line 112, in _roundtrip pkt = conn._read_packet() File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\pymysql\connectio ns.py", line 683, in _read_packet packet.check_error() File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\pymysql\protocol. py", line 220, in check_error err.raise_mysql_exception(self._data) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\pymysql\err.py", line 109, in raise_mysql_exception raise errorclass(errno, errval) pymysql.err.OperationalError: (1045, "Access denied for user 'root'@'localhost' (using password: YES)") The above exception was the direct cause of the following exception: Traceback (most recent call last): File "manage.py", line 15, in <module> execute_from_command_line(sys.argv) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\manag ement\__init__.py", line 381, in execute_from_command_line utility.execute() File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\manag ement\__init__.py", line 375, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\manag ement\base.py", line 316, in run_from_argv self.execute(*args, **cmd_options) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\manag ement\base.py", line 353, in execute output = self.handle(*args, **options) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\manag ement\base.py", line 83, in wrapped res = handle_func(*args, **kwargs) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\manag ement\commands\makemigrations.py", line 103, in handle loader.check_consistent_history(connection) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\migrati ons\loader.py", line 281, in check_consistent_history applied = recorder.applied_migrations() File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\migrati ons\recorder.py", line 61, in applied_migrations if self.has_table(): File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\migrati ons\recorder.py", line 44, in has_table return self.Migration._meta.db_table in self.connection.introspection.table_names(self.connection.cur sor()) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\backend s\base\base.py", line 255, in cursor return self._cursor() File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\backend s\base\base.py", line 232, in _cursor self.ensure_connection() File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\backend s\base\base.py", line 216, in ensure_connection self.connect() File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\utils.p y", line 89, in __exit__ raise dj_exc_value.with_traceback(traceback) from exc_value File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\backend s\base\base.py", line 216, in ensure_connection self.connect() File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\backend s\base\base.py", line 194, in connect self.connection = self.get_new_connection(conn_params) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\django\db\backend s\mysql\base.py", line 227, in get_new_connection return Database.connect(**conn_params) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\pymysql\__init__. py", line 94, in Connect return Connection(*args, **kwargs) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\pymysql\connectio ns.py", line 327, in __init__ self.connect() File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\pymysql\connectio ns.py", line 598, in connect self._request_authentication() File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\pymysql\connectio ns.py", line 873, in _request_authentication auth_packet = _auth.caching_sha2_password_auth(self, auth_packet) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\pymysql\_auth.py" , line 253, in caching_sha2_password_auth pkt = _roundtrip(conn, data) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\pymysql\_auth.py" , line 112, in _roundtrip pkt = conn._read_packet() File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\pymysql\connectio ns.py", line 683, in _read_packet packet.check_error() File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\pymysql\protocol. py", line 220, in check_error err.raise_mysql_exception(self._data) File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\pymysql\err.py", line 109, in raise_mysql_exception raise errorclass(errno, errval) django.db.utils.OperationalError: (1045, "Access denied for user 'root'@'localhost' (using password: YES) ")

【django】关于request.POST[]和request.POST.get()的问题

自己写了个django网站,今天用postman和python requests.post分别进行了登录接口测试,结果发现postman一直报错MultiValueDictKeyError at /login而requests.post是正常。然后我修改了uname和upwd的参数,发现request.POST.get()参数正常,request.POST[]会报错。这个是为什么呢? 代码如下: ``` uname = request.POST.get('uname') upwd = request.POST['upwd'] ``` 同时想请教一下postman和requests工作原理上的区别,谢谢!

在iis上部署django进行登录时提示错误

Environment: Request Method: POST Request URL: http://localhost/admin/login/?next=/admin/ Django Version: 1.9.6 Python Version: 2.7.11 Installed Applications: ['django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles'] Installed Middleware: ['django.middleware.security.SecurityMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.common.CommonMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.auth.middleware.SessionAuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middleware.clickjacking.XFrameOptionsMiddleware'] Traceback: File "D:\python\lib\site-packages\django\core\handlers\base.py" in get_response 149. response = self.process_exception_by_middleware(e, request) File "D:\python\lib\site-packages\django\core\handlers\base.py" in get_response 147. response = wrapped_callback(request, *callback_args, **callback_kwargs) File "D:\python\lib\site-packages\django\views\decorators\cache.py" in _wrapped_view_func 57. response = view_func(request, *args, **kwargs) File "D:\python\lib\site-packages\django\contrib\admin\sites.py" in login 413. return login(request, **defaults) File "D:\python\lib\site-packages\django\contrib\auth\views.py" in inner 49. return func(*args, **kwargs) File "D:\python\lib\site-packages\django\views\decorators\debug.py" in sensitive_post_parameters_wrapper 76. return view(request, *args, **kwargs) File "D:\python\lib\site-packages\django\utils\decorators.py" in _wrapped_view 149. response = view_func(request, *args, **kwargs) File "D:\python\lib\site-packages\django\views\decorators\cache.py" in _wrapped_view_func 57. response = view_func(request, *args, **kwargs) File "D:\python\lib\site-packages\django\contrib\auth\views.py" in login 76. auth_login(request, form.get_user()) File "D:\python\lib\site-packages\django\contrib\auth\__init__.py" in login 110. request.session.cycle_key() File "D:\python\lib\site-packages\django\contrib\sessions\backends\base.py" in cycle_key 305. self.create() File "D:\python\lib\site-packages\django\contrib\sessions\backends\db.py" in create 53. self.save(must_create=True) File "D:\python\lib\site-packages\django\contrib\sessions\backends\db.py" in save 86. obj.save(force_insert=must_create, using=using) File "D:\python\lib\site-packages\django\db\models\base.py" in save 708. force_update=force_update, update_fields=update_fields) File "D:\python\lib\site-packages\django\db\models\base.py" in save_base 736. updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields) File "D:\python\lib\site-packages\django\db\models\base.py" in _save_table 820. result = self._do_insert(cls._base_manager, using, fields, update_pk, raw) File "D:\python\lib\site-packages\django\db\models\base.py" in _do_insert 859. using=using, raw=raw) File "D:\python\lib\site-packages\django\db\models\manager.py" in manager_method 122. return getattr(self.get_queryset(), name)(*args, **kwargs) File "D:\python\lib\site-packages\django\db\models\query.py" in _insert 1039. return query.get_compiler(using=using).execute_sql(return_id) File "D:\python\lib\site-packages\django\db\models\sql\compiler.py" in execute_sql 1060. cursor.execute(sql, params) File "D:\python\lib\site-packages\django\db\backends\utils.py" in execute 79. return super(CursorDebugWrapper, self).execute(sql, params) File "D:\python\lib\site-packages\django\db\backends\utils.py" in execute 64. return self.cursor.execute(sql, params) File "D:\python\lib\site-packages\django\db\utils.py" in __exit__ 95. six.reraise(dj_exc_type, dj_exc_value, traceback) File "D:\python\lib\site-packages\django\db\backends\utils.py" in execute 64. return self.cursor.execute(sql, params) File "D:\python\lib\site-packages\django\db\backends\sqlite3\base.py" in execute 323. return Database.Cursor.execute(self, query, params) Exception Type: OperationalError at /admin/login/ Exception Value: unable to open database file ``` ```

启动Django项目报错could't import Django. Are you sure it's installed and available on your PYTHONPATH environment variable?

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