A script to show a git reflog with names for any branches that are recognized

recent.py

#! /usr/local/bin/python
import subprocess


def get_refs():
    refs = {}
    proc = subprocess.Popen([
        'git', 'show-ref', '--heads', '--tags', '--dereference'
    ], stdout=subprocess.PIPE)
    while True:
        line = proc.stdout.readline()
        if line != '':
            # the real code does filtering here
            sha, ref = line.rstrip().split(' ')
            if sha in refs:
                if len(refs[sha]) > len(ref):
                    refs[sha] = ref
            else:
                refs[sha] = ref
        else:
            break
    return refs


def get_reflog():
    shas = []
    proc = subprocess.Popen([
        'git', 'reflog', '--no-color',
    ], stdout=subprocess.PIPE)
    while True:
        line = proc.stdout.readline()
        if line != '':
            sha_short = line.rstrip().split(' ')[0]
            if sha_short not in shas:
                shas = shas + [sha_short]
        else:
            break
        if len(shas) > 19:
            break
    return shas


refs = get_refs()
shas = get_reflog()

for sha_short in shas:
    found_ref = sha_short
    for sha, ref in refs.iteritems():
        if sha_short in sha:
            found_ref = ref
            break
    print found_ref