Could not find a version that satisfies the requirement xlrd (from versions: )
No matching distribution found for xlrd
解决方案：
$ curl https://bootstrap.pypa.io/get-pip.py >> get-pip.py
$ python get-pip.py
然后重新pip install 模块名
来源 https://www.cnblogs.com/xiyuan2016/p/9013721.html#undefined
