Clones repos for student projects to be graded

cloner.py

import os, sys
import subprocess

# Internal Python Modules
from get_urls import URLS

DEST = "repos"

class FileManager(object):
    dest = DEST
    if not os.path.exists(dest):
        os.mkdir(dest)
    home = os.getcwd()
    def __enter__(self):
        os.chdir(self.dest)
        return self
    def __exit__(self, type, value, traceback):
        os.chdir(self.home)

with FileManager() as FM:
    failures = 0
    total = len(URLS)
    for (idx, url) in enumerate(URLS):
        username = url.split("https://github.com/")[-1].split("/")[0]
        command = ['git', 'clone', url, username]
        if os.path.exists(username):
            print "(%s)-[%s] already cloned " % (idx, username)
            continue
        try:
            result = subprocess.check_output(command, stderr=subprocess.STDOUT)
        except Exception as e:
            failures += 1
            print "(%s)-[%s] FAILED -- %s " % (idx, username, e)
        else:
            print "(%s)-[%s] clone success " % (idx, username)

    print "Cloned %s of %s repos" % (total - failures, total)

get_urls.py

# Add the URLS that you need to clone
URLS = [
"https://github.com/TianyiSun/ios-decal-proj1.git",
"https://github.com/Zeronica/ios-decal-proj1.git",
"https://github.com/tvanness28/ios-decal-proj1.git",
"https://github.com/vikascbh/ios-decal-proj1.git",
"https://github.com/williampsmith/ios-decal-proj1.git",
"https://github.com/willyoungs/ios-decal-proj1.git",
"https://github.com/yadelab/ios-decal-proj1.git",
"https://github.com/YAQIMIAO/ios-decal-proj1.git",
"https://github.com/yeshunlin/ios-decal-proj1.git",
"https://github.com/deathisnotacurse/ios-decal-proj1.git",
"https://github.com/tuotuo251/ios-decal-proj1.git",
"https://github.com/zzeleznick/ios-decal-proj1.git"
]