def getTicketComments(ticketID):
    """ Gets a list of the comments (in order from oldest to newest) for a given ticket """

    url = URL_PREFACE + "_apis/wit/workitems/" + str(ticketID) + "/comments?api-version=3.0-preview&order=asc"
    jsonDict = readURL(url)

    return jsonDict["comments"]

commentList = getTicketComments(ticketID)
hourSum = 0
for comment in commentList:
    try:
        hourSum += float(comment["text"]) # Will break if it's not a number
    except:
        pass

def updateHours(ticketID, completedHours):
    """
    params = {
        "code": code,
        "client_id": CLIENT_ID,
        "client_secret" : CLIENT_SECRET,
        "redirect_uri": REDIRECT_URI,
        "grant_type": "authorization_code"
    }
    """

    headers = {"Content-Type": "application/json-patch+json"}

    url = URL_PREFACE + "_apis/wit/workitems/" + str(ticketID) + "?api-version=1.0"

    body = """[
        {
            "op": "replace",
            "path": "/fields/Microsoft.VSTS.Scheduling.CompletedWork",
            "value": """ + str(completedHours) + """
        }
    ]"""

    username = 'username'  # Doesn't matter
    password = token

    session = requests.Session()
    request = requests.Request(method="PATCH", headers=headers, auth=(username, password),
                               url=url,  data=body)
    prepped = request.prepare()
    response = session.send(prepped)

    return response