使用pip3在Mac上安装importlib时出现问题

Question

早上好！

直到昨天我使用python 2.7并使用以下代码为我的脚本编写输出文件：

import sys
reload(sys)
sys.setdefaultencoding('utf-8')

但现在我将我的代码升级到python 3.7，所以现在我需要使用importlib.reloadinstead只是reload。但是，在我的shell上键入sudo -H pip3 install importlib会给我以下错误：

Collecting importlib
Using cached https://files.pythonhosted.org/packages/31/77/3781f65cafe55480b56914def99022a5d2965a4bb269655c89ef2f1de3cd/importlib-1.0.4.zip
Complete output from command python setup.py egg_info:
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/local/lib/python3.7/site-packages/setuptools/__init__.py", line 6, in <module>
    import distutils.core
  File "/usr/local/Cellar/python/3.7.2_2/Frameworks/Python.framework/Versions/3.7/lib/python3.7/distutils/core.py", line 16, in <module>
    from distutils.dist import Distribution
  File "/usr/local/Cellar/python/3.7.2_2/Frameworks/Python.framework/Versions/3.7/lib/python3.7/distutils/dist.py", line 19, in <module>
    from distutils.util import check_environ, strtobool, rfc822_escape
  File "/usr/local/Cellar/python/3.7.2_2/Frameworks/Python.framework/Versions/3.7/lib/python3.7/distutils/util.py", line 9, in <module>
    import importlib.util
ModuleNotFoundError: No module named 'importlib.util'

----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /private/tmp/pip-install-3cz_3d6n/importlib/

在寻找解决方案后，我也尝试升级setuptools，但这并没有解决我的问题。

提前谢谢了！

Answer 1

importlib at PyPI是用于very old Python versions的过时包装。对于新版本的Python importlib是a module from the standard library，您不需要安装它，它始终可用。