git-pr.py

#!/usr/bin/env python
"""git-pr: fetch a pull request

git pr NR
git pr NR0 NR1 NR2
git pr NR0 NR1 NR2 -args -to -git-fetch

Adds a new branch "pr/NR"

"""

import subprocess
import sys

if len(sys.argv) < 2:
    print "Usage: git-pr NR"
    print "Usage: git-pr NR0 NR1 NR2 NR3"
    print "Usage: git-pr NR0 NR1 NR2 -args -to -git-fetch"
    sys.exit(-1)

opts = [arg for arg in sys.argv[1:] if arg.startswith('-')]
nrs = [int(arg) for arg in sys.argv[1:] if not arg.startswith('-')]

for i, nr in enumerate(nrs):
    print "Fetching PR #{0} into branch 'pr/{0}'".format(nr)
    cmd = "git fetch origin pull/{0}/head:pr/{0}".format(nr)
    out = subprocess.check_output(cmd.split() + opts)

    if i != len(nrs) - 1 and not out.endswith('\n'):
        print

Two things:

• You need to wrap all your print calls in parens for Python 3 compatibility.
• According to the scikit-image development-process, the remote name should be upstream.