pydoc.py 文件源码

def getdocloc(self, object,
                  basedir=os.path.join(sys.exec_prefix, "lib",
                                       "python"+sys.version[0:3])):
        """Return the location of module docs or None"""

        try:
            file = inspect.getabsfile(object)
        except TypeError:
            file = '(built-in)'

        docloc = os.environ.get("PYTHONDOCS",
                                "https://docs.python.org/library")
        basedir = os.path.normcase(basedir)
        if (isinstance(object, type(os)) and
            (object.__name__ in ('errno', 'exceptions', 'gc', 'imp',
                                 'marshal', 'posix', 'signal', 'sys',
                                 'thread', 'zipimport') or
             (file.startswith(basedir) and
              not file.startswith(os.path.join(basedir, 'site-packages')))) and
            object.__name__ not in ('xml.etree', 'test.pydoc_mod')):
            if docloc.startswith(("http://", "https://")):
                docloc = "%s/%s" % (docloc.rstrip("/"), object.__name__.lower())
            else:
                docloc = os.path.join(docloc, object.__name__.lower() + ".html")
        else:
            docloc = None
        return docloc

# -------------------------------------------- HTML documentation generator