python 2.7 functools_lru_cache does not import although installed

Question

When I try to import matplotlib I get an error

Traceback (most recent call last):
  File \"\", line 1, in 
  File \"/usr/local/lib         


        

Answer 1

Following from Aditya Jain's answer,

[python -m] pip uninstall backports.functools_lru_cache
[python -m] pip install backports.functools_lru_cache==1.2.1

which will avoid installing arrow merely to downgrade functools_lru_cache.