depends.py 文件源码

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix,mode,kind) = info = imp.find_module(part, paths)

        if kind==PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts,module))

    return info