Unify debian and homebrew's python code

[maxcai314]

The python code for ponder and cowponder needs to be cleaned up.
The code for these two functions across these two platforms should be identical, with the only difference being cowthoughts_path = "/etc/cowthoughts.txt" versus cowthoughts_path = path.join(popen("brew --prefix").read().strip(), "etc", "cowthoughts.txt"), etc.

Otherwise, the code should be exactly the same organised and arranged.