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在我的应用程序中，直到现在我一直在使用flask-caching 1.0，但现在我必须升级它以version 1.8使用新引入的更改，但是在 python 2.7 中它给出属性错误AttributeError: 'module' object has no attribute 'signature'，我可以看到在 python 2.7 版本inspect模块中没有可用的属性签名。

堆栈跟踪

ERROR:flask_caching:Exception possibly due to cache backend.
Traceback (most recent call last):
  File "/Users/user_profile/workspace/app/venv/lib/python2.7/site-packages/flask_caching/__init__.py", line 795, in decorated_function
    f, *args, **kwargs
  File "/Users/user_profile/workspace/app/venv/lib/python2.7/site-packages/flask_caching/__init__.py", line 592, in make_cache_key
    f, args=args, timeout=_timeout, forced_update=forced_update
  File "/Users/user_profile/workspace/app/venv/lib/python2.7/site-packages/flask_caching/__init__.py", line 529, in _memoize_version
    fname, instance_fname = function_namespace(f, args=args)
  File "/Users/user_profile/workspace/app/venv/lib/python2.7/site-packages/flask_caching/__init__.py", line 80, in function_namespace
    m_args = get_arg_names(f)
  File "/Users/user_profile/workspace/app/venv/lib/python2.7/site-packages/flask_caching/__init__.py", line 59, in get_arg_names
    sig = inspect.signature(f)
AttributeError: 'module' object has no attribute 'signature'

任何解决问题的建议。

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