{"push_id":795108046,"size":1,"distinct_size":1,"ref":"refs/heads/master","head":"b27db09b577e992d5a5c28550ed796df768deb4d","before":"44e5a4865ed1bd2c9480b68e45d08bda6f09653f","commits":[{"sha":"b27db09b577e992d5a5c28550ed796df768deb4d","author":{"email":"ff87d6ab66b2b9f2a5eef9575bc842eb0a777025@gmail.com","name":"Leo Liu"},"message":"calc combinations of k out of n numbers","distinct":true,"url":"https://api.github.com/repos/Leo-Liu-us/Python/commits/b27db09b577e992d5a5c28550ed796df768deb4d"}]}