AttributeError: module ‘requests_cache‘ has no attribute ‘core‘“

此问题我是在用esgf-pyclient 这个包是遇到的。
官方给的答案是 包不匹配，给的解决方式是：

pip install requests_cache==0.5 

原答案链接：Dependency problem (version mismatch between pyesgf and requests library) leading to AttributeError: module ‘requests_cache’ has no attribute ‘core’ #78