pip升级出错，何解？
C:\Windows\system32>pip install --upgrade pipCollecting pip
Downloading pip-20.3-py2.py3-none-any.whl (1.5 MB)
|████ | 194 kB 18 kB/s eta 0:01:14ERROR: Exc
eption:
Traceback (most recent call last):
File "c:\users\apple\appdata\local\programs\python\python38\lib\site-packages\
pip\_vendor\urllib3\response.py", line 425, in _error_catcher
yield
File "c:\users\apple\appdata\local\programs\python\python38\lib\site-packages\
pip\_vendor\urllib3\response.py", line 507, in read
data = self._fp.read(amt) if not fp_closed else b""
File "c:\users\apple\appdata\local\programs\python\python38\lib\site-packages\
pip\_vendor\cachecontrol\filewrapper.py", line 62, in read
data = self.__fp.read(amt)
File "c:\users\apple\appdata\local\programs\python\python38\lib\http\client.py
", line 458, in read
n = self.readinto(b)
File "c:\users\apple\appdata\local\programs\python\python38\lib\http\client.py
", line 502, in readinto
n = self.fp.readinto(b)
File "c:\users\apple\appdata\local\programs\python\python38\lib\socket.py", li
ne 669, in readinto
return self._sock.recv_into(b)
File "c:\users\apple\appdata\local\programs\python\python38\lib\ssl.py", line
1241, in recv_into
return self.read(nbytes, buffer)
File "c:\users\apple\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\apple\appdata\local\programs\python\python38\lib\site-packages\
pip\_internal\cli\base_command.py", line 188, in _main
status = self.run(options, args)
File "c:\users\apple\appdata\local\programs\python\python38\lib\site-packages\
pip\_internal\cli\req_command.py", line 185, in wrapper
return func(self, options, args)
File "c:\users\apple\appdata\local\programs\python\python38\lib\site-packages\
pip\_internal\commands\install.py", line 332, in run
requirement_set = resolver.resolve(
File "c:\users\apple\appdata\local\programs\python\python38\lib\site-packages\
pip\_internal\resolution\legacy\resolver.py", line 179, in resolve
discovered_reqs.extend(self._resolve_one(requirement_set, req))
File "c:\users\apple\appdata\local\programs\python\python38\lib\site-packages\
pip\_internal\resolution\legacy\resolver.py", line 362, in _resolve_one
abstract_dist = self._get_abstract_dist_for(req_to_install)
File "c:\users\apple\appdata\local\programs\python\python38\lib\site-packages\
pip\_internal\resolution\legacy\resolver.py", line 314, in _get_abstract_dist_fo
r
abstract_dist = self.preparer.prepare_linked_requirement(req)
File "c:\users\apple\appdata\local\programs\python\python38\lib\site-packages\
pip\_internal\operations\prepare.py", line 467, in prepare_linked_requirement
local_file = unpack_url(
File "c:\users\apple\appdata\local\programs\python\python38\lib\site-packages\
pip\_internal\operations\prepare.py", line 255, in unpack_url
file = get_http_url(
File "c:\users\apple\appdata\local\programs\python\python38\lib\site-packages\
pip\_internal\operations\prepare.py", line 129, in get_http_url
from_path, content_type = _download_http_url(
File "c:\users\apple\appdata\local\programs\python\python38\lib\site-packages\
pip\_internal\operations\prepare.py", line 281, in _download_http_url
for chunk in download.chunks:
File "c:\users\apple\appdata\local\programs\python\python38\lib\site-packages\
pip\_internal\cli\progress_bars.py", line 166, in iter
for x in it:
File "c:\users\apple\appdata\local\programs\python\python38\lib\site-packages\
pip\_internal\network\utils.py", line 15, in response_chunks
for chunk in response.raw.stream(
File "c:\users\apple\appdata\local\programs\python\python38\lib\site-packages\
pip\_vendor\urllib3\response.py", line 564, in stream
data = self.read(amt=amt, decode_content=decode_content)
File "c:\users\apple\appdata\local\programs\python\python38\lib\site-packages\
pip\_vendor\urllib3\response.py", line 529, in read
raise IncompleteRead(self._fp_bytes_read, self.length_remaining)
File "c:\users\apple\appdata\local\programs\python\python38\lib\contextlib.py"
, line 131, in __exit__
self.gen.throw(type, value, traceback)
File "c:\users\apple\appdata\local\programs\python\python38\lib\site-packages\
pip\_vendor\urllib3\response.py", line 430, 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.
WARNING: You are using pip version 20.1.1; however, version 20.3 is available.
You should consider upgrading via the 'c:\users\apple\appdata\local\programs\pyt
hon\python38\python.exe -m pip install --upgrade pip' command.
C:\Windows\system32>
更新一下pip就好了 跟着他的提示
切到c:\users\apple\appdata\local\programs\python\python38\
这个目录下，然后执行
python.exe -m pip install --upgrade pip 成了，谢谢前辈！
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