Python到松弛文本集成

Question

def send_message_to_slack(text):
    from urllib3 import request
    from urllib3 import parse
    import json

    post = {"text": "{0}".format(text)}

    try:
        json_data = json.dumps(post)
        req = request.Request("https://hooks.slack.com/services/web-hook",
        data=json_data.encode('ascii'),
        headers={'Content-Type': 'application/json'})
        resp = request.urlopen(req)
    except Exception as em:
        print("EXCEPTION: " + str(em))

send_message_to_slack('This message is from Python program')

以上程序提示错误

Traceback (most recent call last):
  File "slacktext.py", line 17, in <module>
    send_message_to_slack('This message is from Python program')
  File "slacktext.py", line 3, in send_message_to_slack
    from urllib3 import parse
ImportError: cannot import name 'parse'

我已经安装了urllib3，但是无法导入解析和请求