Post请求在curl中运行良好，但在使用python请求时返回500

import requests
import json

# 假设这是你的URL和POST数据
url = 'http://example.com/api'
data = {'key': 'value'}

# 设置请求头，包括Content-Type为application/json
headers = {
    'Content-Type': 'application/json',
    # 如果需要认证，添加认证头
    # 'Authorization': 'Bearer YOUR_TOKEN'
}

# 将数据转换为JSON字符串
json_data = json.dumps(data)

try:
    # 发送POST请求
    response = requests.post(url, headers=headers, data=json_data)
    response.raise_for_status()  # 如果响应状态码不是200，将抛出异常
except requests.exceptions.HTTPError as errh:
    print ("Http Error:",errh)
except requests.exceptions.ConnectionError as errc:
    print ("Error Connecting:",errc)
except requests.exceptions.Timeout as errt:
    print ("Timeout Error:",errt)
except requests.exceptions.RequestException as err:
    print ("Something Else:",err)

# 打印响应内容
print(response.text)