python -- 解决安装pyxll-jupyter时出现“TimeoutError: The read operation timed out"的问题

在cmd输入命令”pip install pyxll-jupyter“进行安装，控制台出现以下报错信息：

Downloading pyxll_jupyter-0.5.2-py3-none-any.whl (46 kB)
   ---------------------------------------- 46.3/46.3 kB 16.1 kB/s eta 0:00:00
Downloading jupyter-1.0.0-py2.py3-none-any.whl (2.7 kB)
Downloading jupyter_client-8.6.0-py3-none-any.whl (105 kB)
   ---------------------------------------- 105.9/105.9 kB 10.7 kB/s eta 0:00:00
Downloading notebook-7.1.1-py3-none-any.whl (5.0 MB)
    --------------------------------------- 0.1/5.0 MB 9.8 kB/s eta 0:08:19
ERROR: Exception:
Traceback (most recent call last):
  File "C:\Users\AppData\Local\Programs\Python\Python311\Lib\site-packages\pip\_vendor\urllib3\response.py", line 438, in _error_catcher
    yield
  File "C:\Users\AppData\Local\Programs\Python\Python311\Lib\site-packages\pip\_vendor\urllib3\response.py", line 561, in read
    data = self._fp_read(amt) if not fp_closed else b""
           ^^^^^^^^^^^^^^^^^^
  File "C:\Users\AppData\Local\Programs\Python\Python311\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 "C:\Users\AppData\Local\Programs\Python\Python311\Lib\site-packages\pip\_vendor\cachecontrol\filewrapper.py", line 98, in read
    data: bytes = self.__fp.read(amt)
                  ^^^^^^^^^^^^^^^^^^^
  File "C:\Users\AppData\Local\Programs\Python\Python311\Lib\http\client.py", line 473, in read
    s = self.fp.read(amt)
        ^^^^^^^^^^^^^^^^^
  File "C:\Users\AppData\Local\Programs\Python\Python311\Lib\socket.py", line 706, in readinto
    return self._sock.recv_into(b)
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\AppData\Local\Programs\Python\Python311\Lib\ssl.py", line 1314, in recv_into
    return self.read(nbytes, buffer)
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\AppData\Local\Programs\Python\Python311\Lib\ssl.py", line 1166, 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 "C:\Users\AppData\Local\Programs\Python\Python311\Lib\site-packages\pip\_internal\cli\base_command.py", line 180, in exc_logging_wrapper
    status = run_func(*args)
             ^^^^^^^^^^^^^^^
  File "C:\Users\AppData\Local\Programs\Python\Python311\Lib\site-packages\pip\_internal\cli\req_command.py", line 245, in wrapper
    return func(self, options, args)
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\AppData\Local\Programs\Python\Python311\Lib\site-packages\pip\_internal\commands\install.py", line 377, in run
    requirement_set = resolver.resolve(
                      ^^^^^^^^^^^^^^^^^
  File "C:\Users\AppData\Local\Programs\Python\Python311\Lib\site-packages\pip\_internal\resolution\resolvelib\resolver.py", line 179, in resolve
    self.factory.preparer.prepare_linked_requirements_more(reqs)
  File "C:\Users\AppData\Local\Programs\Python\Python311\Lib\site-packages\pip\_internal\operations\prepare.py", line 552, in prepare_linked_requirements_more
    self._complete_partial_requirements(
  File "C:\Users\AppData\Local\Programs\Python\Python311\Lib\site-packages\pip\_internal\operations\prepare.py", line 467, in _complete_partial_requirements
    for link, (filepath, _) in batch_download:
  File "C:\Users\AppData\Local\Programs\Python\Python311\Lib\site-packages\pip\_internal\network\download.py", line 183, in __call__
    for chunk in chunks:
  File "C:\Users\AppData\Local\Programs\Python\Python311\Lib\site-packages\pip\_internal\cli\progress_bars.py", line 53, in _rich_progress_bar
    for chunk in iterable:
  File "C:\Users\AppData\Local\Programs\Python\Python311\Lib\site-packages\pip\_internal\network\utils.py", line 63, in response_chunks
    for chunk in response.raw.stream(
  File "C:\Users\AppData\Local\Programs\Python\Python311\Lib\site-packages\pip\_vendor\urllib3\response.py", line 622, in stream
    data = self.read(amt=amt, decode_content=decode_content)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\AppData\Local\Programs\Python\Python311\Lib\site-packages\pip\_vendor\urllib3\response.py", line 560, in read
    with self._error_catcher():
  File "C:\Users\AppData\Local\Programs\Python\Python311\Lib\contextlib.py", line 158, in __exit__
    self.gen.throw(typ, value, traceback)
  File "C:\Users\AppData\Local\Programs\Python\Python311\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.

解决方法：更换命令语句为”>python -m pip --default-timeout=100 install  pyxll-jupyter“，就可以解决。

> python -m pip --default-timeout=100 install  pyxll-jupyter