Python 坏了，AttributeError : 'module' object has no attribute 'python_version'

Question

我在 Windows 上运行 2.7。直到昨天，当我尝试使用 multiprocessing 库运行一些作业时，我才遇到问题，遇到了一堆内存错误，一切都崩溃了。

这是我尝试运行 pip 时发生的情况:

Traceback (most recent call last):
  File "C:\Python27\lib\runpy.py", line 162, in _run_module_as_ma
    "__main__", fname, loader, pkg_name)
  File "C:\Python27\lib\runpy.py", line 72, in _run_code
    exec code in run_globals
  File "C:\Python27\Scripts\pip.exe\__main__.py", line 5, in <mod
  File "C:\Python27\lib\site-packages\pip\__init__.py", line 13,
    from pip.utils import get_installed_distributions, get_prog
  File "C:\Python27\lib\site-packages\pip\utils\__init__.py", lin
e>
    from pip._vendor import pkg_resources, six
  File "C:\Python27\lib\site-packages\pip\_vendor\__init__.py", l
_module
    __import__(name)
  File "C:\Python27\lib\site-packages\pip\_vendor\pkg_resources\_
ne 1316, in <module>
    class MarkerEvaluation(object):
  File "C:\Python27\lib\site-packages\pip\_vendor\pkg_resources\_
ne 1320, in MarkerEvaluation
    'python_full_version': platform.python_version,
AttributeError: 'module' object has no attribute 'python_version'

当我尝试从 python shell import pandas 时，我得到了同样的结果。奇怪的是，当我尝试运行 import pandas as pd 而不是 import pandas 时，我收到此错误:

In [3]: import pandas as pd
cannot import name hashtable
------------------------------------------
ImportError
<ipython-input-3-af55e7023913> in <module>
----> 1 import pandas as pd

C:\Python27\lib\site-packages\pandas\__ini
      5
      6 try:
----> 7     from . import hashtable, tslib
      8 except Exception:  # pragma: no co
      9     import sys

ImportError: cannot import name hashtable

知道如何在不完全重新安装 Python 和我的所有库的情况下解决这个问题吗？

Answer 1

Python 3.8 删除了一些东西。我通过使用 curl
安装 pip 解决了我的 pip 问题(特别是 pip install)
对我有用的是:
cd ~/Downloads
下载 get-pip.py
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
然后用 python 3.8 运行它:
python3.8 get-pip.py

帮我解决了。

来源:https://pip.pypa.io/en/stable/installing/