python - 确定 Easy Install 中的 python 版本

Question

我不想在 CentOS 5.9 上安装“twisted”模块。默认情况下有 python 2.4 ，由于其他程序依赖项，我无法删除 python 2.4 。 我已经通过 yum install python27 安装了 Python 2.7 ，并通过 yum install python-setuptools 安装了 Easy Install 。现在，当我尝试使用 easy_installtwisted 安装“twisted”时，出现此错误:

<  ... truncated ... >
Running Twisted-12.3.0/setup.py -q bdist_egg --dist-dir /tmp/easy_install-YeUGBS/Twisted-12.3.0/egg-dist-tmp-NhwZo-
Traceback (most recent call last):
  File "/usr/bin/easy_install", line 7, in ?
    sys.exit(
  File "/usr/lib/python2.4/site-packages/setuptools/command/easy_install.py", line 1670, in main
    with_ei_usage(lambda:
  File "/usr/lib/python2.4/site-packages/setuptools/command/easy_install.py", line 1659, in with_ei_usage
    return f()
  File "/usr/lib/python2.4/site-packages/setuptools/command/easy_install.py", line 1674, in <lambda>
    distclass=DistributionWithoutHelpCommands, **kw
  File "/usr/lib/python2.4/distutils/core.py", line 149, in setup
    dist.run_commands()
  File "/usr/lib/python2.4/distutils/dist.py", line 946, in run_commands
    self.run_command(cmd)
  File "/usr/lib/python2.4/distutils/dist.py", line 966, in run_command
    cmd_obj.run()
  File "/usr/lib/python2.4/site-packages/setuptools/command/easy_install.py", line 211, in run
    self.easy_install(spec, not self.no_deps)
  File "/usr/lib/python2.4/site-packages/setuptools/command/easy_install.py", line 446, in easy_install
    return self.install_item(spec, dist.location, tmpdir, deps)
  File "/usr/lib/python2.4/site-packages/setuptools/command/easy_install.py", line 471, in install_item
    dists = self.install_eggs(spec, download, tmpdir)
  File "/usr/lib/python2.4/site-packages/setuptools/command/easy_install.py", line 655, in install_eggs
    return self.build_and_install(setup_script, setup_base)
  File "/usr/lib/python2.4/site-packages/setuptools/command/easy_install.py", line 930, in build_and_install
    self.run_setup(setup_script, setup_base, args)
  File "/usr/lib/python2.4/site-packages/setuptools/command/easy_install.py", line 919, in run_setup
    run_setup(setup_script, args)
  File "/usr/lib/python2.4/site-packages/setuptools/sandbox.py", line 26, in run_setup
    DirectorySandbox(setup_dir).run(
  File "/usr/lib/python2.4/site-packages/setuptools/sandbox.py", line 63, in run
    return func()
  File "/usr/lib/python2.4/site-packages/setuptools/sandbox.py", line 29, in <lambda>
    {'__file__':setup_script, '__name__':'__main__'}
  File "setup.py", line 64, in ?
  File "setup.py", line 46, in main
  File "./twisted/__init__.py", line 47
    class Dummy(object):
        ^
SyntaxError: invalid syntax

如您所见，Easy Install 使用 python 2.4 而不是 python 2.7 。如何强制它使用 python 2.7 ？

Answer 1

您可以通过键入例如手动使用您想要的 Python 版本: Python2.7 <script> 。尝试执行python2.7 -m easy_install twisted相反。

如果由于某种原因easy_install未安装Python 2.7您可以手动下载并安装here .