如何使用GitLabAPI创建MR？

我正在尝试使用GitLab合并请求API和python和python请求包创建合并请求。这是我的代码的一部分

import requests, json

MR = 'http://www.gitlab.com/api/v4/projects/317/merge_requests'

id = '317'
gitlabAccessToken = 'MySecretAccessToken'
sourceBranch = 'issue110'
targetBranch = 'master'
title = 'title'
description = 'description'

header = { 'PRIVATE-TOKEN' : gitlabAccessToken,
           'id'            : id,    
           'title'         : title, 
           'source_branch' : sourceBranch, 
           'target_branch' : targetBranch
         }

reply = requests.post(MR, headers = header)
status = json.loads(reply.text)

但我在回复中不断收到以下消息

{'error': 'title is missing, source_branch is missing, target_branch is missing'}

我应该更改其要求以使其正常工作吗？

除之外PRIVATE-TOKEN，所有参数都应作为形式编码的参数传递，这意味着：

header = {'PRIVATE-TOKEN' : gitlabAccessToken}
params = {
           'id'            : id,    
           'title'         : title, 
           'source_branch' : sourceBranch, 
           'target_branch' : targetBranch
         }

reply = requests.post(MR, data=params, headers=header)