Ich habe virtualenv auf Ubuntu installiert. Wenn ich jedoch versuche, eine virtuelle Umgebung zu erstellen, wird eine Fehlermeldung angezeigt. Mein Zenv-Ordner enthält kein "Aktivieren". Wie kann ich es reparieren? Ich würde das oft tun. Dies ist das erste Mal, dass ich diesen Fehler erhalte.

ubuntu@ip-172-31-24-181:~$ virtualenv Zenv
New python executable in /home/ubuntu/Zenv/bin/python
Installing setuptools, pip, wheel...
  Complete output from command /home/ubuntu/Zenv/bin/python -c "import sys, pip; sys...d\"] + sys.argv[1:]))" setuptools pip wheel:
  Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home/ubuntu/anaconda/lib/python2.7/site-packages/virtualenv_support/pip-8.0.2-py2.py3-none-any.whl/pip/__init__.py", line 15, in <module>
  File "/home/ubuntu/anaconda/lib/python2.7/site-packages/virtualenv_support/pip-8.0.2-py2.py3-none-any.whl/pip/vcs/mercurial.py", line 9, in <module>
  File "/home/ubuntu/anaconda/lib/python2.7/site-packages/virtualenv_support/pip-8.0.2-py2.py3-none-any.whl/pip/download.py", line 38, in <module>
  File "/home/ubuntu/anaconda/lib/python2.7/site-packages/virtualenv_support/pip-8.0.2-py2.py3-none-any.whl/pip/_vendor/requests/__init__.py", line 58, in <module>
  File "/home/ubuntu/anaconda/lib/python2.7/site-packages/virtualenv_support/pip-8.0.2-py2.py3-none-any.whl/pip/_vendor/requests/utils.py", line 26, in <module>
  File "/home/ubuntu/anaconda/lib/python2.7/site-packages/virtualenv_support/pip-8.0.2-py2.py3-none-any.whl/pip/_vendor/requests/compat.py", line 7, in <module>
  File "/home/ubuntu/anaconda/lib/python2.7/site-packages/virtualenv_support/pip-8.0.2-py2.py3-none-any.whl/pip/_vendor/requests/packages/__init__.py", line 29, in <module>
ImportError: No module named urllib3
----------------------------------------
...Installing setuptools, pip, wheel...done.
Traceback (most recent call last):
  File "/home/ubuntu/anaconda/bin/virtualenv", line 11, in <module>
    sys.exit(main())
  File "/home/ubuntu/anaconda/lib/python2.7/site-packages/virtualenv.py", line 703, in main
    symlink=options.symlink)
  File "/home/ubuntu/anaconda/lib/python2.7/site-packages/virtualenv.py", line 904, in create_environment
    download=download,
  File "/home/ubuntu/anaconda/lib/python2.7/site-packages/virtualenv.py", line 861, in install_wheel
    call_subprocess(cmd, show_stdout=False, extra_env=env)
  File "/home/ubuntu/anaconda/lib/python2.7/site-packages/virtualenv.py", line 781, in call_subprocess
    % (cmd_desc, proc.returncode))
OSError: Command /home/ubuntu/Zenv/bin/python -c "import sys, pip; sys...d\"] + sys.argv[1:]))" setuptools pip wheel failed with error code 1