我在pycharm终端输入“pip install pandas ”，显示“ERROR: Exception:
Traceback (most recent call last):
File "c:\users\dingkai\appdata\local\programs\python\python38\lib\site-packages\pip\_vendor\urllib3\response.py", line 438, in _error_catcher
yield
File "c:\users\dingkai\appdata\local\programs\python\python38\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\dingkai\appdata\local\programs\python\python38\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\dingkai\appdata\local\programs\python\python38\lib\site-packages\pip\_vendor\cachecontrol\filewrapper.py", line 98, in read
data: bytes = self.__fp.read(amt)
File "c:\users\dingkai\appdata\local\programs\python\python38\lib\http\client.py", line 455, in read
n = self.readinto(b)
File "c:\users\dingkai\appdata\local\programs\python\python38\lib\http\client.py", line 499, in readinto
n = self.fp.readinto(b)
File "c:\users\dingkai\appdata\local\programs\python\python38\lib\socket.py", line 669, in readinto
return self._sock.recv_into(b)
File "c:\users\dingkai\appdata\local\programs\python\python38\lib\ssl.py", line 1241, in recv_into
return self.read(nbytes, buffer)
File "c:\users\dingkai\appdata\local\programs\python\python38\lib\ssl.py", line 1099, 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:\users\dingkai\appdata\local\programs\python\python38\lib\site-packages\pip\_internal\cli\base_command.py", line 106, in _run_wrapper
status = _inner_run()
File "c:\users\dingkai\appdata\local\programs\python\python38\lib\site-packages\pip\_internal\cli\base_command.py", line 97, in _inner_run
return self.run(options, args)
File "c:\users\dingkai\appdata\local\programs\python\python38\lib\site-packages\pip\_internal\cli\req_command.py", line 67, in wrapper
return func(self, options, args)
File "c:\users\dingkai\appdata\local\programs\python\python38\lib\site-packages\pip\_internal\commands\install.py", line 386, in run
requirement_set = resolver.resolve(
File "c:\users\dingkai\appdata\local\programs\python\python38\lib\site-packages\pip\_internal\resolution\resolvelib\resolver.py", line 179, in resolve
self.factory.preparer.prepare_linked_requirements_more(reqs)
File "c:\users\dingkai\appdata\local\programs\python\python38\lib\site-packages\pip\_internal\operations\prepare.py", line 554, in prepare_linked_requirements_more
self._complete_partial_requirements(
File "c:\users\dingkai\appdata\local\programs\python\python38\lib\site-packages\pip\_internal\operations\prepare.py", line 469, in _complete_partial_requirements
for link, (filepath, _) in batch_download:
File "c:\users\dingkai\appdata\local\programs\python\python38\lib\site-packages\pip\_internal\network\download.py", line 184, in __call__
for chunk in chunks:
File "c:\users\dingkai\appdata\local\programs\python\python38\lib\site-packages\pip\_internal\cli\progress_bars.py", line 55, in _rich_progress_bar
for chunk in iterable:
File "c:\users\dingkai\appdata\local\programs\python\python38\lib\site-packages\pip\_internal\network\utils.py", line 65, in response_chunks
for chunk in response.raw.stream(
File "c:\users\dingkai\appdata\local\programs\python\python38\lib\site-packages\pip\_vendor\urllib3\response.py", line 622, in stream
data = self.read(amt=amt, decode_content=decode_content)
File "c:\users\dingkai\appdata\local\programs\python\python38\lib\site-packages\pip\_vendor\urllib3\response.py", line 587, in read
raise IncompleteRead(self._fp_bytes_read, self.length_remaining)
File "c:\users\dingkai\appdata\local\programs\python\python38\lib\contextlib.py", line 131, in __exit__
self.gen.throw(type, value, traceback)
File "c:\users\dingkai\appdata\local\programs\python\python38\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.
”错误，该如何解决
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