virtualenv在任何地方永远挂起hanging

Question

我试图按照这个tutorial在pythonanywhere上安装一个django应用程序，但是在尝试使用

 virtualenv --python=python3.5 myvenv

控制台挂起

我之前也这样做过，我记得这一切都很轻松，但是当我运行这个命令时，控制台就挂了，我最终被放到了压缩包里。当我中断进程时，我得到一些关于Python 2.7的错误

virtualenv --python=python3.5 myvenv
Running virtualenv with interpreter /usr/bin/python3.5
Using base prefix '/usr'
New python executable in /home/username/myvenv/bin/python3.5
Also creating executable in /home/username/myvenv/bin/python
Traceback (most recent call last):
  File "/usr/local/bin/virtualenv", line 11, in <module>
    sys.exit(main())
  File "/usr/local/lib/python2.7/dist-packages/virtualenv.py", line 669, in main
Traceback (most recent call last):
    raise SystemExit(popen.wait())
  File "/usr/local/lib/python2.7/dist-packages/virtualenv.py", line 2327, in <module>
  File "/usr/lib/python2.7/subprocess.py", line 1376, in wait
pid, sts = _eintr_retry_call(os.waitpid, self.pid, 0)
  File "/usr/lib/python2.7/subprocess.py", line 476, in _eintr_retry_call
    return func(*args)
KeyboardInterrupt
    main()
  File "/usr/local/lib/python2.7/dist-packages/virtualenv.py", line 711, in main
    symlink=options.symlink)
  File "/usr/local/lib/python2.7/dist-packages/virtualenv.py", line 944, in create_environment
    download=download,
  File "/usr/local/lib/python2.7/dist-packages/virtualenv.py", line 900, in install_wheel
    call_subprocess(cmd, show_stdout=False, extra_env=env, stdin=SCRIPT)
  File "/usr/local/lib/python2.7/dist-packages/virtualenv.py", line 767, in call_subprocess
    line = stdout.readline()
KeyboardInterrupt

不确定这些是否与什么有关，或者仅仅是因为中断。

Answer 1

一般做法是直接引用python二进制文件，将virtualenv作为模块运行，并指定放置virtualenv的目录。对于上面的示例：

/path/to/python/bin/python3.5 -m virtualenv myvenv

这将在myvenv中创建虚拟环境，运行python3.5。注意:您的python3.5基础安装必须安装了virtualenv库(通过pip或源代码)。

希望这能有所帮助！:)