crc8

@mayli 我是终端用户，我看最后有 443 、https 、timeout ，基本就是国内网络问题，无科学方法的情况反复尝试几下也会成功。但那一堆错误真的吓人。

@iorilu 嗯，说的是，我就是终端用户。

@iorilu 我没手动设置任何源最后也会成功，很明显是网络问题，问题是 python 直接优雅地说出最后一句就行，不用抛出中间那满屏的一坨坨。根本看了也是白看。反正我是不会看的，只看最后！

@renmu 很明显我是知道的。但就不能优雅一点吗？

虽然，最终，都会成功。但成功之前那一坨坨，真的没办法去掉吗？不是说 python 是优雅的吗？

Downloading Django-4.2.11-py3-none-any.whl (8.0 MB)
---------------------------------------- 8.0/8.0 MB 74.0 kB/s eta 0:00:00
Installing collected packages: django
Attempting uninstall: django
Found existing installation: Django 5.1.3
Uninstalling Django-5.1.3:
Successfully uninstalled Django-5.1.3
Successfully installed django-4.2.11

其实，科学一下，就不会一坨坨的啦，但科学不是每时每刻都有啊。

让大家伙也领略一下吧。

pip3 install django==4.2.11
Collecting django==4.2.11
Using cached Django-4.2.11-py3-none-any.whl.metadata (4.2 kB)
Requirement already satisfied: asgiref<4,>=3.6.0 in c:\users\user\appdata\local\programs\python\python313\lib\site-packages (from django==4.2.11) (3.8.1)
Requirement already satisfied: sqlparse>=0.3.1 in c:\users\user\appdata\local\programs\python\python313\lib\site-packages (from django==4.2.11) (0.5.1)
Requirement already satisfied: tzdata in c:\users\user\appdata\local\programs\python\python313\lib\site-packages (from django==4.2.11) (2024.2)
Downloading Django-4.2.11-py3-none-any.whl (8.0 MB)
-------------------------- ------------- 5.2/8.0 MB 9.7 kB/s eta 0:04:43

[notice] A new release of pip is available: 24.2 -> 24.3.1
[notice] To update, run: python.exe -m pip install --upgrade pip
ERROR: Exception:
Traceback (most recent call last):
File "C:\Users\user\AppData\Local\Programs\Python\Python313\Lib\site-packages\pip\_vendor\urllib3\response.py", line 438, in _error_catcher
yield
File "C:\Users\user\AppData\Local\Programs\Python\Python313\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\user\AppData\Local\Programs\Python\Python313\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\user\AppData\Local\Programs\Python\Python313\Lib\site-packages\pip\_vendor\cachecontrol\filewrapper.py", line 98, in read
data: bytes = self.__fp.read(amt)
~~~~~~~~~~~~~~^^^^^
File "C:\Users\user\AppData\Local\Programs\Python\Python313\Lib\http\client.py", line 479, in read
s = self.fp.read(amt)
File "C:\Users\user\AppData\Local\Programs\Python\Python313\Lib\socket.py", line 719, in readinto
return self._sock.recv_into(b)
~~~~~~~~~~~~~~~~~~~~^^^
File "C:\Users\user\AppData\Local\Programs\Python\Python313\Lib\ssl.py", line 1304, in recv_into
return self.read(nbytes, buffer)
~~~~~~~~~^^^^^^^^^^^^^^^^
File "C:\Users\user\AppData\Local\Programs\Python\Python313\Lib\ssl.py", line 1138, 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\user\AppData\Local\Programs\Python\Python313\Lib\site-packages\pip\_internal\cli\base_command.py", line 105, in _run_wrapper
status = _inner_run()
File "C:\Users\user\AppData\Local\Programs\Python\Python313\Lib\site-packages\pip\_internal\cli\base_command.py", line 96, in _inner_run
return self.run(options, args)
~~~~~~~~^^^^^^^^^^^^^^^
File "C:\Users\user\AppData\Local\Programs\Python\Python313\Lib\site-packages\pip\_internal\cli\req_command.py", line 67, in wrapper
return func(self, options, args)
File "C:\Users\user\AppData\Local\Programs\Python\Python313\Lib\site-packages\pip\_internal\commands\install.py", line 379, in run
requirement_set = resolver.resolve(
reqs, check_supported_wheels=not options.target_dir
)
File "C:\Users\user\AppData\Local\Programs\Python\Python313\Lib\site-packages\pip\_internal\resolution\resolvelib\resolver.py", line 179, in resolve
self.factory.preparer.prepare_linked_requirements_more(reqs)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^
File "C:\Users\user\AppData\Local\Programs\Python\Python313\Lib\site-packages\pip\_internal\operations\prepare.py", line 554, in prepare_linked_requirements_more
self._complete_partial_requirements(
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
partially_downloaded_reqs,
^^^^^^^^^^^^^^^^^^^^^^^^^^
parallel_builds=parallel_builds,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File "C:\Users\user\AppData\Local\Programs\Python\Python313\Lib\site-packages\pip\_internal\operations\prepare.py", line 469, in _complete_partial_requirements
for link, (filepath, _) in batch_download:
^^^^^^^^^^^^^^
File "C:\Users\user\AppData\Local\Programs\Python\Python313\Lib\site-packages\pip\_internal\network\download.py", line 184, in __call__
for chunk in chunks:
^^^^^^
File "C:\Users\user\AppData\Local\Programs\Python\Python313\Lib\site-packages\pip\_internal\cli\progress_bars.py", line 55, in _rich_progress_bar
for chunk in iterable:
^^^^^^^^
File "C:\Users\user\AppData\Local\Programs\Python\Python313\Lib\site-packages\pip\_internal\network\utils.py", line 65, in response_chunks
for chunk in response.raw.stream(
~~~~~~~~~~~~~~~~~~~^
chunk_size,
^^^^^^^^^^^
...<22 lines>...
decode_content=False,
^^^^^^^^^^^^^^^^^^^^^
):
^
File "C:\Users\user\AppData\Local\Programs\Python\Python313\Lib\site-packages\pip\_vendor\urllib3\response.py", line 622, in stream
data = self.read(amt=amt, decode_content=decode_content)
File "C:\Users\user\AppData\Local\Programs\Python\Python313\Lib\site-packages\pip\_vendor\urllib3\response.py", line 560, in read
with self._error_catcher():
~~~~~~~~~~~~~~~~~~~^^
File "C:\Users\user\AppData\Local\Programs\Python\Python313\Lib\contextlib.py", line 162, in __exit__
self.gen.throw(value)
~~~~~~~~~~~~~~^^^^^^^
File "C:\Users\user\AppData\Local\Programs\Python\Python313\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

@malusama 并非自己写，而是 github clone 下的别人的代码运行。

一会 Python2 ，一会 Python3 ，接下来应该还会有 Python4

@youngce 一坨错误，非绿则红，不是速度慢，就是说 SSL 时间超时。与命令本身是否有误无关。