Question

我在MacOS上使用python，我在设置python2.7环境时遇到问题。我在系统上安装了python2.7和python3.6。并运行下面的代码来设置python2.7 env。我不知道为什么会出现这个错误。从输出中我看到它正在使用/anaconda/lib/python3.6目录。如何才能使用python2.7环境？

$ virtualenv --python=/usr/bin/python2.7 venv/
Running virtualenv with interpreter /usr/bin/python2.7
New python executable in /Users/joey/dev/jump/jump-api/venv/bin/python2.7
Traceback (most recent call last):
  File "/anaconda/lib/python3.6/site-packages/virtualenv.py", line 2869, in <module>
    main()
  File "/anaconda/lib/python3.6/site-packages/virtualenv.py", line 713, in main
    symlink=options.symlink)
  File "/anaconda/lib/python3.6/site-packages/virtualenv.py", line 925, in create_environment
    site_packages=site_packages, clear=clear, symlink=symlink))
  File "/anaconda/lib/python3.6/site-packages/virtualenv.py", line 1231, in install_python
    copy_exe_shared_libs_and_symlinks(executable, py_executable, home_dir)
  File "/anaconda/lib/python3.6/site-packages/virtualenv.py", line 2828, in copy_exe_shared_libs_and_symlinks
    of = codefile(f, rpaths)
  File "/anaconda/lib/python3.6/site-packages/virtualenv.py", line 2799, in codefile
    return machofile(file, list(initial_rpaths_transitive))
  File "/anaconda/lib/python3.6/site-packages/virtualenv.py", line 2422, in __init__
    _, sos = zip(*mach_o_find_dylibs(file))
  File "/anaconda/lib/python3.6/site-packages/virtualenv.py", line 2386, in mach_o_find_dylibs
    do_file(ofile, find_lc_load_dylib, offset_size(), results, regex)
  File "/anaconda/lib/python3.6/site-packages/virtualenv.py", line 2355, in do_file
    do_file(file, offset_size(offset, size), *args)
TypeError: do_file() takes at least 4 arguments (3 given)

Answer 1

由于您已经安装了Anaconda，您可以通过在终端中执行以下命令来创建Python虚拟环境 -

conda create -n pythonenvname python=x.x anaconda

因为您正在尝试创建Python 2.7虚拟环境，所以为方便起见，我建议您使用python27作为您的环境名称。此外，x.x指的是用于创建环境的Python版本。在你的情况下，它是2.7。

因此，这是您应该运行以设置虚拟环境的命令 -

conda create -n python27 python=2.7 anaconda

安装环境后，运行以下命令将其激活 -

source activate python27

现在，如果你运行任何python命令，例如python helloworld.py，那么将使用Python 2.7解释器。

要停用Python环境并返回默认环境，只需执行以下命令 -

即可

source deactivate

如需进一步参考，请查看this site。

如何通过virtualenv创建python2.7环境？

1 个答案: