pydoc.py 文件源码

def locate(path, forceload=0):
    """Locate an object by name or dotted path, importing as necessary."""
    parts = [part for part in split(path, '.') if part]
    module, n = None, 0
    while n < len(parts):
        nextmodule = safeimport(join(parts[:n+1], '.'), forceload)
        if nextmodule: module, n = nextmodule, n + 1
        else: break
    if module:
        object = module
        for part in parts[n:]:
            try: object = getattr(object, part)
            except AttributeError: return None
        return object
    else:
        if hasattr(__builtin__, path):
            return getattr(__builtin__, path)

# --------------------------------------- interactive interpreter interface