是否列出已安装的python站点包?[副本]

yolk

pip

pip freeze

querystring-parser==1.0
raven==1.4.6
requests==0.14.2
scipy==0.10.1

sys.modules

import pprint, sys
pprint.pprint(sys.modules)

pkgutil sys.modules

import pkgutil
print [name for module_loader,name,ispkg in
          pkgutil.walk_packages(['/usr/lib/python2.6/site-packages'])]

The docs walk_packages pkgutil pkgutil.__all__ help(pkgutil.walk_packages)

Definition: pkgutil.walk_packages(path=None, prefix='', onerror=None)
Docstring:
    Yields (module_loader, name, ispkg) for all modules recursively
    on path, or, if path is None, all accessible modules.

    'path' should be either None or a list of paths to look for
    modules in.

    'prefix' is a string to output on the front of every module name
    on output.

    Note that this function must import all *packages* (NOT all
    modules!) on the given path, in order to access the __path__
    attribute to find submodules.

    'onerror' is a function which gets called with one argument (the
    name of the package which was being imported) if any exception
    occurs while trying to import a package.  If no onerror function is
    supplied, ImportErrors are caught and ignored, while all other
    exceptions are propagated, terminating the search.

    Examples:

    # list all modules python can access
    walk_packages()

    # list all submodules of ctypes
    walk_packages(ctypes.__path__, ctypes.__name__+'.')