When given a css spreadsheet, finds the highest z index

max_z_index.py

#! /usr/bin/env python3
""" Analyze a css stylesheet to find the highest z index possible
Usage: ./max_z_index.py [filename]
To run on every file with .css in a directory, use `for f in $(ls); do echo $f | grep .css | xargs ./max_z_index.py; done`
"""
import fileinput
import re

def find_max_z(css_text):
	matches = re.findall(r"z-index:([0-9]+)", css_text)
	if matches:
		return int(max(matches))
	else:
		return 0

if __name__ == "__main__":
	css_text = ""
	for line in fileinput.input():
		css_text += line
	print(find_max_z(css_text))