import pandas results in ModuleNotFoundError :_lzma
just upgraded to version 0.25.1 and works well
On Ubuntu 18.04 with python 3.7.3, I'm attempting to import pandas but this fails because it can't find _lzma.  
I've verified that _lzma is installed with dpkg:

/usr/lib/python3.7/lib-dynload/_lzma.cpython-37m-x86_64-linux-gnu.so. Oddly, _lzma is not a dependency of pandas (as specified by pip3).