Brew Cleanup Calculator

cleanup_total.py

from __future__ import print_function
import re
import sys

# 1. brew cleanup > /tmp/brew_cleanup.txt
# 2. python cleanup_total.py /tmp/brew_cleanup.txt

cleanup_file = '/tmp/brew_cleanup.txt'
if len(sys.argv) > 1:
    file = sys.argv[1] 

mult = { 'K': 1000, 'M': 1000000 }
total = 0.0
with open(cleanup_file, 'r') as f:
    for line in f:
        m = re.search(r'(?P<q>\d+|\d+.\d+)(?P<m>K|M)', line)
        if m:
            q = float(m.group('q'))
            m = m.group('m')
            total += q * mult[m]


print('Total: {0:,g} MB'.format(total / mult['M']))