git: rebase, count all commits to get rebase command

rebase.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import re
import subprocess

""" GIT LOG EXAMPLE:
0eccd52 (HEAD -> froga) 02 # <- COUNT: FROM THIS
67239d6 01
fb3c480 12
dac05e9 11
cc6f658 10
349b1a5 4
2d188e6 1
2ab6e87 (origin/garapena, garapena) PHP7-49862 menu responsive # <- COUNT: TO THIS
99f7d89 AMP-49862 meta
557d191 AMP-49862 cmp
e1ad2d9 PHP7-49378 berria min js
"""

log = subprocess.getoutput("git log --decorate --oneline")

count = 0
start = False
lines = re.split("\n", log);
branch = ''
for line in lines:
    m = re.search("[^\s]+\s+\(HEAD\s+\->\s+([^\)]+)\)", line) # 0eccd52 (HEAD -> froga) 02
    if m:
        start = True
        branch = m.group(1)
        continue
    else:
        m = re.search("[^\s]+\s+\([^\s]+,\s+[^\s]+\)", line) # 2ab6e87 (origin/garapena, garapena) PHP7-49862 menu responsive
        if m:
            start = False
            continue

    if start == True:
        count = count + 1

print("branch: "+branch)
print("commits: "+str(count))

if count > 1:
    print("command to use: git rebase -i HEAD~"+str(count))
    print("IMPORTANT: Don't forget to change 'pick' to 'squash' in all of commits except in the first one")
    print("CANCEL command: git rebase --abort")
    print("More info: https://www.youtube.com/watch?v=V5KrD7CmO4o")
else:
    print("none to rebase")