test_reprlib.py 文件源码

def _check_path_limitations(self, module_name):
        # base directory
        source_path_len = len(self.here)
        # a path separator + `longname` (twice)
        source_path_len += 2 * (len(self.longname) + 1)
        # a path separator + `module_name` + ".py"
        source_path_len += len(module_name) + 1 + len(".py")
        cached_path_len = source_path_len + len(imp.cache_from_source("x.py")) - len("x.py")
        if os.name == 'nt' and cached_path_len >= 258:
            # Under Windows, the max path len is 260 including C's terminating
            # NUL character.
            # (see http://msdn.microsoft.com/en-us/library/windows/desktop/aa365247%28v=vs.85%29.aspx#maxpath)
            self.skipTest("test paths too long (%d characters) for Windows' 260 character limit"
                          % cached_path_len)
        elif os.name == 'nt' and verbose:
            print("cached_path_len =", cached_path_len)