Question

我正在使用zc.buildout，当我尝试运行bootstrap时（第一次在新计算机上运行），我收到以下错误：

>> python2.7 bootstrap.py

Traceback (most recent call last):
  File "bootstrap.py", line 158, in <module>
    import pkg_resources
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/../../Extras/lib/python/pkg_resources.py", line 698, in <module>
    class Environment(object):
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/../../Extras/lib/python/pkg_resources.py", line 701, in Environment
    def __init__(self, search_path=None, platform=get_supported_platform(), python=PY_MAJOR):
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/../../Extras/lib/python/pkg_resources.py", line 99, in get_supported_platform
    plat = 'macosx-%s-%s' % ('.'.join(_macosx_vers()[:2]), m.group(3))
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/../../Extras/lib/python/pkg_resources.py", line 209, in _macosx_vers
    _cache.append(mac_ver()[0].split('.'))
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/platform.py", line 803, in mac_ver
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/platform.py", line 780, in _mac_ver_xml
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plistlib.py", line 78, in readPlist
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plistlib.py", line 406, in parse
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plistlib.py", line 418, in handleEndElement
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plistlib.py", line 452, in end_key
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plistlib.py", line 436, in getData
LookupError: unknown encoding: ascii

有没有人见过这个或知道如何修复它？它似乎与获取当前版本的操作系统有关。我的操作系统是Mac 10.8.2。

谢谢！

Answer 1

检查/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7是否包含未填写的模块（* .py）。它们默认缺失，这就是问题所在。

Answer 2

正如Vitaly回答的那样，问题确实是/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/中缺少原始.py文件（干净安装中只有.pyc文件）。具体来说，这些文件必须存在才能使bootstrap.py成功：

/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/encodings/__init__.py
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site.py

您可以从virtualenv或其他计算机上复制它们。

Answer 3

安装Xcode命令行工具为我解决了这个问题，虽然我无法解释原因。您可以在

下从Xcode安装这些

Preferences -> Downloads

或来自Apple Developers download page。

Answer 4

这似乎只是Mountain Lion的问题，并且只有在你的python上安装了新的（或报告似乎表明）。

解决方法是使用-S开关运行python：

python2.7 -S bootstrap.py

或创建virtualenv，然后使用virtualenv python运行bootstrap.py脚本。

运行bootstrap时“LookupError：未知编码：ascii”

4 个答案: