如何使用python请求发送不带参数的post类型请求

import requests

url = "http://example.com/api"  # 替换为实际的API地址
response = requests.post(url)

if response.status_code == 200:
    print("请求成功")
else:
    print("请求失败")

import requests

url = "http://example.com/api"  # 替换为实际的API地址
response = requests.post(url)

if response.status_code == 200:
    print("请求成功")
else:
    print("请求失败")

import requests
import json

url = "http://example.com/api"  # 替换为实际的API地址
data = {"key": "value"}  # 替换为实际的请求参数

response = requests.post(url, data=json.dumps(data), headers={"Content-Type": "application/json"})

if response.status_code == 200:
    print("请求成功")
else:
    print("请求失败")