Don’t panic in case of data tilt, teach you to easily obtain the slope of table tilt>>>

]There was an error importerror: cannot import name cbook

When you enter the python environment, you find that import: no module named functools appears when you run import cafe and import Matplotlib_ lru_ cache

To uninstall the previous Matplotlib:

sudo pip uninstall matplotlib

Use this command to re install:

sudo apt-get install python-matplotlib

Or: https://my.oschina.net/u/3726752/blog/2877910