【Python】pip install selenium报错

在pycharm终端中下载selenium，使用pip install selenium命令下载，报如下错误：

pip._vendor.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.

PS C:Users86159PycharmProjectspytest> pip install selenium
Collecting selenium
  Downloading selenium-4.1.3-py3-none-any.whl (968 kB)
     |███████████                     | 337 kB 6.8 kB/s eta 0:01:33ERROR: Exception:                                              
Traceback (most recent call last):                                                                                                
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_vendorurllib3response.py", line 438, in _error_catcher
    yield                                                                                                                         
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_vendorurllib3response.py", line 519, in read          
    data = self._fp.read(amt) if not fp_closed else b""                                                                           
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_vendorcachecontrolfilewrapper.py", line 62, in read   
    data = self.__fp.read(amt)                                                                                                    
  File "C:Users86159AppDataLocalProgramsPythonPython37libhttpclient.py", line 447, in read                              
    n = self.readinto(b)
  File "C:Users86159AppDataLocalProgramsPythonPython37libhttpclient.py", line 491, in readinto
    n = self.fp.readinto(b)
  File "C:Users86159AppDataLocalProgramsPythonPython37libsocket.py", line 589, in readinto
    return self._sock.recv_into(b)
  File "C:Users86159AppDataLocalProgramsPythonPython37libssl.py", line 1049, in recv_into
    return self.read(nbytes, buffer)
  File "C:Users86159AppDataLocalProgramsPythonPython37libssl.py", line 908, in read
    return self._sslobj.read(len, buffer)
socket.timeout: The read operation timed out

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_internalclibase_command.py", line 180, in _main
    status = self.run(options, args)
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_internalclireq_command.py", line 204, in wrapper
    return func(self, options, args)
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_internalcommandsinstall.py", line 319, in run
    reqs, check_supported_wheels=not options.target_dir
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_internalresolutionresolvelibresolver.py", line 128, in resolve
    requirements, max_rounds=try_to_avoid_resolution_too_deep
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_vendorresolvelibresolvers.py", line 473, in resolve
    state = resolution.resolve(requirements, max_rounds=max_rounds)
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_vendorresolvelibresolvers.py", line 341, in resolve
    name, crit = self._merge_into_criterion(r, parent=None)
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_vendorresolvelibresolvers.py", line 172, in _merge_into_criterion
    if not criterion.candidates:
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_vendorresolvelibstructs.py", line 139, in __bool__
    return bool(self._sequence)
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_internalresolutionresolvelibfound_candidates.py", line 143, in __bool__
    return any(self)
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_internalresolutionresolvelibfound_candidates.py", line 129, in
    return (c for c in iterator if id(c) not in self._incompatible_ids)
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_internalresolutionresolvelibfound_candidates.py", line 33, in _iter_built
    candidate = func()
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_internalresolutionresolvelibfactory.py", line 205, in _make_candidate_from_link
    version=version,
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_internalresolutionresolvelibcandidates.py", line 312, in __init__
    version=version,
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_internalresolutionresolvelibcandidates.py", line 151, in __init__
    self.dist = self._prepare()
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_internalresolutionresolvelibcandidates.py", line 234, in _prepare
    dist = self._prepare_distribution()
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_internalresolutionresolvelibcandidates.py", line 318, in _prepare_distribution
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_internaloperationsprepare.py", line 508, in prepare_linked_requirement
    return self._prepare_linked_requirement(req, parallel_builds)
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_internaloperationsprepare.py", line 552, in _prepare_linked_requirement
    self.download_dir, hashes
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_internaloperationsprepare.py", line 243, in unpack_url
    hashes=hashes,
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_internaloperationsprepare.py", line 102, in get_http_url
    from_path, content_type = download(link, temp_dir.path)
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_internalnetworkdownload.py", line 157, in __call__
    for chunk in chunks:
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_internalcliprogress_bars.py", line 152, in iter
    for x in it:
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_internalnetworkutils.py", line 86, in response_chunks
    decode_content=False,
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_vendorurllib3response.py", line 576, in stream
    data = self.read(amt=amt, decode_content=decode_content)
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_vendorurllib3response.py", line 541, in read
    raise IncompleteRead(self._fp_bytes_read, self.length_remaining)
  File "C:Users86159AppDataLocalProgramsPythonPython37libcontextlib.py", line 130, in __exit__
    self.gen.throw(type, value, traceback)
  File "C:Users86159PycharmProjectspytestvenvlibsite-packagespip_vendorurllib3response.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.

网络的原因，重新尝试即可。

retry之后，成功安装selenium

用pip list查看是否成功安装了selenium