extract tickets from git history using commit messages

dumper.py

import subprocess
import re
import sys


if len(sys.argv) != 3:
    print "incorrect args"
    print sys.argv
    sys.exit(1)


versions_arg = "{0}..{1}".format(sys.argv[1], sys.argv[2])


p = subprocess.Popen(['git', 'log', '--no-merges', '--grep=[a-zA-Z]\\{4\\}-[0-9]', '--format=%s', versions_arg], 
    shell=False, 
    stdin=subprocess.PIPE, 
    stdout=subprocess.PIPE, 
    stderr=subprocess.PIPE)

lines = p.stdout.readlines()

def extract(lines):
    tickets = {}
    pattern = re.compile('([a-zA-Z]{4})-(\d+)')
    for line in lines:
         for (squad, number) in re.findall(pattern, line):
             normalized = (squad.upper(), int(number))
             if normalized not in tickets:
                 tickets[normalized] = []
             tickets[normalized].append(line)
    return tickets

def print_with_messages(tickets):
    for ((squad, number), messages) in sorted(tickets.items(), key=lambda x: x[0]):
        print squad, '-', number
        for message in messages:
            print '  ', message


tickets = extract(lines)
#print tickets
print_with_messages(tickets)

dumper2.py

import subprocess
import re
import sys


if len(sys.argv) != 3:
    print "incorrect args"
    print sys.argv
    sys.exit(1)


versions_arg = "{0}..{1}".format(sys.argv[1], sys.argv[2])


p = subprocess.Popen(['git', 'log', '--no-merges', '--grep=[a-zA-Z]\\{3,4\\}-[0-9]', '--format=%s', versions_arg], 
    shell=False, 
    stdin=subprocess.PIPE, 
    stdout=subprocess.PIPE, 
    stderr=subprocess.PIPE)

lines = p.stdout.readlines()

def extract(lines):
    tickets = {}
    pattern = re.compile('([a-zA-Z]{3,4})-(\d+)')
    for line in lines:
         for (squad, number) in re.findall(pattern, line):
             normalized = (squad.upper(), int(number))
             if normalized not in tickets:
                 tickets[normalized] = []
             tickets[normalized].append(line)
    return tickets

def print_with_messages(tickets):
    for ((squad, number), messages) in sorted(tickets.items(), key=lambda x: x[0]):
        print squad, '-', number
        for message in messages:
            print '  ', message

def print_tickets(tickets):
    for ((squad, number), messages) in sorted(tickets.items(), key=lambda x: x[0]):
        print squad, '-', number

tickets = extract(lines)
#print_tickets(tickets)
print_with_messages(tickets)