import shlex
import subprocess


def _exit():
    print('\nPlease fix and re-run to complete checks')
    exit(1)


def do_process(command):
    print(command)
    command = shlex.split(command)
    try:
        process = subprocess.Popen(command, stderr=subprocess.PIPE)
    except FileNotFoundError:
        print('Command `%s` not found' % command[0])
        return 1
    error_level = process.wait()
    if error_level == 0:
        print('Good.\n')
    return error_level


if __name__ == '__main__':
    if do_process('flake8 --exclude=docs'):
        _exit()
    elif do_process('pydocstyle praw'):
        _exit()
    else:
        do_process('pylint --rcfile=./.pylintrc praw')

#!/usr/bin/env python
"""Run static analysis on the project."""
from shutil import rmtree
from subprocess import CalledProcessError, check_call
from tempfile import mkdtemp
import sys


def do_process(*args):
    """Run program provided by args.

    Return True on success.

    Output failed message on non-zero exit and return False.

    Exit if command is not found.
    """
    print('Running: {}'.format(' '.join(args)))
    try:
        check_call(args)
    except CalledProcessError:
        print('\nFailed: {}'.format(' '.join(args)))
        return False
    except Exception as exc:
        sys.stderr.write(str(exc) + '\n')
        sys.exit(1)
    return True


def main():
    """Entry point to pre_push.py."""
    success = True
    success &= do_process('flake8', '--exclude=docs')
    success &= do_process('pydocstyle', 'praw')
    success &= do_process('pylint', '--rcfile=.pylintrc', 'praw')

    tmp_dir = mkdtemp()
    try:
        success &= do_process('sphinx-build', '-W', 'docs', tmp_dir)
    finally:
        rmtree(tmp_dir)

    return 0 if success else 1


if __name__ == '__main__':
    sys.exit(main())

Update pre_push.py.