auto2to3.py 文件源码

def find_module(self, fullname, path=None):
        # this duplicates most of ImpImporter.find_module
        subname = fullname.split(".")[-1]
        if subname != fullname and self.path is None:
            return None
        if self.path is None:
            path = None
        else:
            path = [os.path.realpath(self.path)]
        try:
            file, filename, etc = imp.find_module(subname, path)
        except ImportError:
            return None
        if file and etc[2] == imp.PY_SOURCE:
            outfilename = maybe_2to3(filename, modname=fullname)
            if outfilename != filename:
                file.close()
                filename = outfilename
                file = open(filename, 'rb')
        return ImpLoader(fullname, file, filename, etc)


# setup the hook