What is the "m" behind python version like python3.6m [duplicate]

Question

Recently when I install python3.6 in Ubuntu 16.04 I see it installs both python3.6 and python3.6m

What the hell is python3.6m? Should I use python3.6 or python3.6m to run my python script?

Thanks

Answer 1

The version ending with m is compiled with a very specialized version of the C function malloc, tailored to be faster in a python application.

For more info see: Difference between python3 and python3m executables