#!/usr/bin/env python import re import textwrap with open('Packages.stub', 'r+') as f: lines = f.readlines() for line in lines: line = line.lstrip() if line.startswith("Package: "): line = re.sub("^Package: ", "", line) line += ":" print(line, end="") else: print(textwrap.indent(line, ' ' * 2), end="")