How do I show all files in a directory except those that have a certain extension AND display them in multiple columns?

Question

Since I write in Python a lot it's kind of annoying to see .pyc files all the time and I would like to just hide them at this point. I tried the following, but I can't seem to figure out how to get it to print in multiple columns.

ceasarbautista@hse140:~/Desktop/Statistics/statistics/probability$ ls
__init__.py     calculus.py     conditional.py      counting.pyc        distributions.pyc   event.pyc       objects.pyc
__init__.pyc        calculus.pyc        counting.py     distributions.py    event.py        objects.py      plots.py
ceasarbautista@hse140:~/Desktop/Statistics/statistics/probability$ ls | grep -v .pyc
__init__.py
calculus.py
conditional.py
counting.py
distributions.py
event.py
objects.py
plots.py
ceasarbautista@hse140:~/Desktop/Statistics/statistics/probability$ ls -C | grep -v .pyc
conditional.py      event.py

Answer 1

You can do that like this:

find . ! -name '*.pyc' -exec ls -dC {} +

Or with an advanced shell:

ksh: ls -dC !(*.pyc)

zsh: setopt extendedglob then ls -dC ^*.pyc

bash: shopt -s extglob then ls -dC !(*.pyc)

Answer 2

Filter through column.

ls | grep -v '\.pyc$' | column