通过Anaconda安装opencv库时发生错误

Question

使用anaconda prompt安装opencv时，显示好多错误，它说read timed out，请问这有什么方法解决吗？
错误代码如下：

已解决
方法是更换镜像源，更换为中科大的，参考视频如下：
https://www.bilibili.com/video/BV1oi4y1G7u4/

```python

(base) C:\Users\Administrator>pip install opencv-python
Collecting opencv-python
  Downloading opencv_python-4.9.0.80-cp37-abi3-win_amd64.whl.metadata (20 kB)
Requirement already satisfied: numpy>=1.21.2 in d:\anaconda3\lib\site-packages (from opencv-python) (1.26.4)
Downloading opencv_python-4.9.0.80-cp37-abi3-win_amd64.whl (38.6 MB)
   ---------------------------------------- 0.1/38.6 MB 11.7 kB/s eta 0:55:03
ERROR: Exception:
Traceback (most recent call last):
  File "D:\anaconda3\Lib\site-packages\pip\_vendor\urllib3\response.py", line 438, in _error_catcher
    yield
  File "D:\anaconda3\Lib\site-packages\pip\_vendor\urllib3\response.py", line 561, in read
    data = self._fp_read(amt) if not fp_closed else b""
           ^^^^^^^^^^^^^^^^^^
  File "D:\anaconda3\Lib\site-packages\pip\_vendor\urllib3\response.py", line 527, in _fp_read
    return self._fp.read(amt) if amt is not None else self._fp.read()
           ^^^^^^^^^^^^^^^^^^
  File "D:\anaconda3\Lib\site-packages\pip\_vendor\cachecontrol\filewrapper.py", line 98, in read
    data: bytes = self.__fp.read(amt)
                  ^^^^^^^^^^^^^^^^^^^
  File "D:\anaconda3\Lib\http\client.py", line 473, in read
    s = self.fp.read(amt)
        ^^^^^^^^^^^^^^^^^
  File "D:\anaconda3\Lib\socket.py", line 706, in readinto
    return self._sock.recv_into(b)
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\anaconda3\Lib\ssl.py", line 1315, in recv_into
    return self.read(nbytes, buffer)
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\anaconda3\Lib\ssl.py", line 1167, in read
    return self._sslobj.read(len, buffer)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TimeoutError: The read operation timed out

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "D:\anaconda3\Lib\site-packages\pip\_internal\cli\base_command.py", line 180, in exc_logging_wrapper
    status = run_func(*args)
             ^^^^^^^^^^^^^^^
  File "D:\anaconda3\Lib\site-packages\pip\_internal\cli\req_command.py", line 245, in wrapper
    return func(self, options, args)
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\anaconda3\Lib\site-packages\pip\_internal\commands\install.py", line 377, in run
    requirement_set = resolver.resolve(
                      ^^^^^^^^^^^^^^^^^
  File "D:\anaconda3\Lib\site-packages\pip\_internal\resolution\resolvelib\resolver.py", line 179, in resolve
    self.factory.preparer.prepare_linked_requirements_more(reqs)
  File "D:\anaconda3\Lib\site-packages\pip\_internal\operations\prepare.py", line 552, in prepare_linked_requirements_more
    self._complete_partial_requirements(
  File "D:\anaconda3\Lib\site-packages\pip\_internal\operations\prepare.py", line 467, in _complete_partial_requirements
    for link, (filepath, _) in batch_download:
  File "D:\anaconda3\Lib\site-packages\pip\_internal\network\download.py", line 183, in __call__
    for chunk in chunks:
  File "D:\anaconda3\Lib\site-packages\pip\_internal\cli\progress_bars.py", line 53, in _rich_progress_bar
    for chunk in iterable:
  File "D:\anaconda3\Lib\site-packages\pip\_internal\network\utils.py", line 63, in response_chunks
    for chunk in response.raw.stream(
  File "D:\anaconda3\Lib\site-packages\pip\_vendor\urllib3\response.py", line 622, in stream
    data = self.read(amt=amt, decode_content=decode_content)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\anaconda3\Lib\site-packages\pip\_vendor\urllib3\response.py", line 560, in read
    with self._error_catcher():
  File "D:\anaconda3\Lib\contextlib.py", line 158, in __exit__
    self.gen.throw(typ, value, traceback)
  File "D:\anaconda3\Lib\site-packages\pip\_vendor\urllib3\response.py", line 443, in _error_catcher
    raise ReadTimeoutError(self._pool, None, "Read timed out.")
pip._vendor.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.

```

Answer 1

让阿豪来帮你解答，本回答参考chatgpt3.5编写提供，如果还有疑问可以评论或留言

这个问题是由于anaconda prompt默认的镜像源下载速度较慢，导致安装opencv时出现read timed out错误。解决方法是更换镜像源，可以选择国内的中科大镜像源。具体操作步骤如下：

1. 打开anaconda prompt，输入以下命令：

pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple

这将设置中科大的镜像源为全局默认镜像源。 2. 输入以下命令来安装opencv：

pip install opencv-python

这样就可以使用中科大的镜像源来下载opencv，避免read timed out错误的发生。 实例代码如下：

#设置镜像源
pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple
#安装opencv
pip install opencv-python