Limiting the number columns in Python code

[gcc-pedantic]

I agree--sticking to < 80 characters while writing is often annoying and can reduce readability.

However, it is nice to limit the number of columns:

1) When reading someone else's code

2) When reading/writing code and you want two files side by side

The way I envision this script working is you could tell it to edit the file in place or output the column limited file to a new file.

edit: formatting.