Which revisions have a particular phrase in their git diff?

git-search.py

import os
import os.path
from itertools import tee, izip
from subprocess import Popen, PIPE

BUFSIZE = 16 * 1024 * 1024

def pairwise(iterable):
    "s -> (s0,s1), (s1,s2), (s2, s3), ..."
    a, b = tee(iterable)
    next(b, None)
    return izip(a, b)

cmd = ["git", "rev-list", "release_prod_20170902_214223..release_prod_20170927_223603"]
p = Popen(cmd, stdout=PIPE, stderr=PIPE, bufsize=BUFSIZE)
output, errors = p.communicate()
if not errors:
    hashes = output.splitlines()
    for a, b in pairwise(hashes):
        cmd = ["git", "diff", a, b]
        p = Popen(cmd, stdout=PIPE, stderr=PIPE, bufsize=BUFSIZE)
        output, errors = p.communicate()
        if errors:
            print("Error: {0} {1}".format(a, b))
            break
        else:
            if "MissingColumn" in output:
                print(a, b)