python - 尝试使用 pip : SyntaxError; confused between python2 and python3? 将 Python 2.7.0 升级到 Python 2.7.3

Question

我在 /local/gerrit/python2.7 的 virtualenv 中安装了 Python 2.7.0。我想将其升级到 Python 2.7.3。我正在尝试为此使用 pip，但不知何故它似乎混淆了 python2 和 python3:

$ pip install --upgrade 'python>=2.7,<2.7.99'
Downloading/unpacking python>=2.7,<2.7.99 from http://www.python.org/ftp/python/2.7.3/Python-2.7.3.tar.bz2
  Running setup.py egg_info for package python
    Traceback (most recent call last):
      File "<string>", line 16, in <module>
      File "/local/gerrit/python2.7/build/python/setup.py", line 1804
        exec(f.read(), globals(), fficonfig)
    SyntaxError: unqualified exec is not allowed in function 'configure_ctypes' it contains a nested function with free variables
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):

  File "<string>", line 16, in <module>

  File "/local/gerrit/python2.7/build/python/setup.py", line 1804

    exec(f.read(), globals(), fficonfig)

SyntaxError: unqualified exec is not allowed in function 'configure_ctypes' it contains a nested function with free variables

----------------------------------------
Command python setup.py egg_info failed with error code 1 in /local/gerrit/python2.7/build/python
Storing complete log in /storage4/home/gerrit/.pip/pip.log

看起来 /local/gerrit/python2.7/build/python/setup.py 实际上有一个 python3 语法，有些东西搞砸了。我的诊断正确吗？如何以不需要重新安装 Python 及其所有库的方式清理它？

Answer 1

您可能需要使用类似 pythonz 的东西它管理同一台机器上的多个 python 安装。

然后当你使用 virtualenv 之类的东西时，你会想要将它们指向你安装的二进制文件，你将拥有一个带有特定 python 副本的工作 virtualenv

virtualenv -p/path/to/python