將Python3傳遞給virtualenvwrapper會引發ImportError

Question

我正在嘗試使用virtualenvwrapper來制作基於python 3的virtualenv 。 但是，當我傳遞可選的解釋器參數時，我看到了這個錯誤。 我正在運行Ubuntu 15.04。 我嘗試重新安裝virtualenv和virtualenvwrapper但沒有成功。 感謝你的幫助！

$ mkvirtualenv scriptcutter --python=/usr/bin/python3
Running virtualenv with interpreter /usr/bin/python3
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/virtualenv.py", line 8, in <module>
    import base64
  File "/usr/lib/python3.4/base64.py", line 9, in <module>
    import re
  File "/usr/lib/python3.4/re.py", line 336, in <module>
    import copyreg
  File "/usr/local/lib/python2.7/dist-packages/copyreg/__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.
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 53, in apport_excepthook
    if not enabled():
  File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 24, in enabled
    import re
  File "/usr/lib/python3.4/re.py", line 336, in <module>
    import copyreg
  File "/usr/local/lib/python2.7/dist-packages/copyreg/__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.

Original exception was:
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/virtualenv.py", line 8, in <module>
    import base64
  File "/usr/lib/python3.4/base64.py", line 9, in <module>
    import re
  File "/usr/lib/python3.4/re.py", line 336, in <module>
    import copyreg
  File "/usr/local/lib/python2.7/dist-packages/copyreg/__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.

Answer 1

我遇到了同樣的問題，但在我將virtualenv降級到12.0.2之后，這個問題就消失了。

Answer 2

現在這是一種解決方法。

使用pyvenv創建virtualenv 。

# install pyvenv on Ubuntu
sudo apt-get install python3-venv

為了最大限度地減少正常工作流程中的中斷，請傳遞與virtualenvwrapper使用的目標目錄相同的目標目錄。

pyvenv example ~/.virtualenvs/example

這將自動與workon和cdproject命令一起使用。 我沒有使用virtualenvwrapper提供的其他東西

希望這可以幫助。

Answer 3

您可以使用以下命令升級到virtualenv的最新版本：

sudo pip install --upgrade https://github.com/pypa/virtualenv/archive/master.zip
virtualenv --version
# Returns 15.2.0.dev0 when I ran it

然后，以下命令有效：

mkvirtualenv scriptcutter --python=/usr/bin/python3

顯然，開發分支已被刪除，因此帶有“develop”的URL將不再起作用。 我的回答是基於@ pjotr_dolphin的評論，並更新了URL。