&引用；在Python3上不应访问此软件包；运行python3时

在我学会在Mac上同时使用python和python3之前，我曾尝试使用virtualenv在python版本之间切换

我能够修复我的python 2.7版本，因此仍然可以正常工作。但是，现在，当我运行python 3时，出现以下错误：

Failed to import the site module
Traceback (most recent call last):
  File "/usr/local/Cellar/python3/3.6.0/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site.py", line 544, in <module>
main()
  File "/usr/local/Cellar/python3/3.6.0/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site.py", line 530, in main
known_paths = addusersitepackages(known_paths)
  File "/usr/local/Cellar/python3/3.6.0/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site.py", line 282, in addusersitepackages
user_site = getusersitepackages()
  File "/usr/local/Cellar/python3/3.6.0/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site.py", line 258, in getusersitepackages
user_base = getuserbase() # this will also set USER_BASE
  File "/usr/local/Cellar/python3/3.6.0/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site.py", line 248, in getuserbase
USER_BASE = get_config_var('userbase')
  File "/usr/local/Cellar/python3/3.6.0/Frameworks/Python.framework/Versions/3.6/lib/python3.6/sysconfig.py", line 601, in get_config_var
return get_config_vars().get(name)
  File "/usr/local/Cellar/python3/3.6.0/Frameworks/Python.framework/Versions/3.6/lib/python3.6/sysconfig.py", line 580, in get_config_vars
import _osx_support
  File "/usr/local/Cellar/python3/3.6.0/Frameworks/Python.framework/Versions/3.6/lib/python3.6/_osx_support.py", line 4, in <module>
import re
  File "/usr/local/Cellar/python3/3.6.0/Frameworks/Python.framework/Versions/3.6/lib/python3.6/re.py", line 125, in <module>
import functools
  File "/usr/local/Cellar/python3/3.6.0/Frameworks/Python.framework/Versions/3.6/lib/python3.6/functools.py", line 21, in <module>
from collections import namedtuple
  File "/usr/local/Cellar/python3/3.6.0/Frameworks/Python.framework/Versions/3.6/lib/python3.6/collections/__init__.py", line 32, in <module>
from reprlib import recursive_repr as _recursive_repr
  File "/usr/local/lib/python2.7/site-packages/reprlib/__init__.py", line 7, in <module>
raise ImportError('This package should not be accessible on Python 3. '
ImportError: This package should not be accessible on Python 3. Either you are trying to run from the python-future src folder or your installation of python-future is corrupted.

---

您的环境包含

PYTHONPATH=/usr/local/lib/python2.7/site包

这不适用于Python3，原因很明显。要删除它，请执行以下操作：

unset PYTHONPATH

---

我用下面的命令解决了我的问题

sudo pip install virtualenv --upgrade
virtualenv -p python3 env

---

将

env | egrep-i'python | virtualenv'

的输出添加到question@CharlesDuffy添加了输出，但我想保留python和python3。取消设置是否会影响我的python（2.7）？如果其配置正确/正常，默认情况下，它将在其

sys.path

中拥有自己的

站点包。因此，如果取消设置
PYTHONPATH
会破坏您的Python2.7，那么您的Python2.7安装中的某些内容已经被破坏。谢谢，修复了它！由于某些原因，每次我需要使用python3时，我都必须取消设置它。有什么方法可以使其永久化吗？首先找到设置永久化的位置，然后将其撤消。这不是默认情况下存在的东西。仅供参考，对于复制粘贴程序，这将创建一个名为
env
的虚拟环境，运行Python 3，然后您可以通过激活w/
source env/bin/activate
来使用它。您还需要了解
deactivate
和
哪些python
命令可以在python环境中跳转。鉴于OP希望在Python2X和Python3X之间切换，这是最好的方法。
sudo pip install virtualenv --upgrade
virtualenv -p python3 env