Push file update to GitHub repository using GitHub API in Python

push_file_to_github_repo_branch.py

import requests
import base64
import json
import datetime


def push_to_repo_branch(gitHubFileName, fileName, repo_slug, branch, user, token):
    '''
    Push file update to GitHub repo
    
    :param gitHubFileName: the name of the file in the repo
    :param fileName: the name of the file on the local branch
    :param repo_slug: the github repo slug, i.e. username/repo
    :param branch: the name of the branch to push the file to
    :param user: github username
    :param token: github user token
    :return None
    :raises Exception: if file with the specified name cannot be found in the repo
    '''
    
    message = "Automated update " + str(datetime.datetime.now())
    path = "https://api.github.com/repos/%s/branches/%s" % (repo_slug, branch)

    r = requests.get(path, auth=(user,token))
    if not r.ok:
        print("Error when retrieving branch info from %s" % path)
        print("Reason: %s [%d]" % (r.text, r.status_code))
        raise
    rjson = r.json()
    treeurl = rjson['commit']['commit']['tree']['url']
    r2 = requests.get(treeurl, auth=(user,token))
    if not r2.ok:
        print("Error when retrieving commit tree from %s" % treeurl)
        print("Reason: %s [%d]" % (r2.text, r2.status_code))
        raise
    r2json = r2.json()
    sha = None

    for file in r2json['tree']:
        # Found file, get the sha code
        if file['path'] == gitHubFileName:
            sha = file['sha']

    # if sha is None after the for loop, we did not find the file name!
    if sha is None:
        print "Could not find " + gitHubFileName + " in repos 'tree' "
        raise Exception

    with open(fileName) as data:
        content = base64.b64encode(data.read())

    # gathered all the data, now let's push
    inputdata = {}
    inputdata["path"] = gitHubFileName
    inputdata["branch"] = branch
    inputdata["message"] = message
    inputdata["content"] = content
    if sha:
        inputdata["sha"] = str(sha)

    updateURL = "https://api.github.com/repos/EBISPOT/RDF-platform/contents/" + gitHubFileName
    try:
        rPut = requests.put(updateURL, auth=(user,token), data = json.dumps(inputdata))
        if not rPut.ok:
            print("Error when pushing to %s" % updateURL)
            print("Reason: %s [%d]" % (rPut.text, rPut.status_code))
            raise Exception
    except requests.exceptions.RequestException as e:
        print 'Something went wrong! I will print all the information that is available so you can figure out what happend!'
        print rPut
        print rPut.headers
        print rPut.text
        print e