How to pass the input_data into stdin in python?

[CannotBeFatAnyMore]

I call this API with a JSON file, but i find that the input_data is not received correctly by the python script, how to handle it? The test script is put below:

import json
import requests
def run_code_with_input(code_file_name, input_data):
    try:
        with open(code_file_name, 'r', encoding='utf-8') as f:
            code_content = f.read()
            ''' code file content:
            import sys

            print("开始读取输入...")
            line = sys.stdin.readline().rstrip()
            print(f"读到了: {line}")

            '''
        payload = {
            "compile_timeout": 10,
            "run_timeout": 10,
            "code": code_content,
            "input": input_data,
            "language": "python"
        }
        response = requests.request("POST", URL, data=json.dumps(payload))

        # response = requests.post(URL, data=json.dumps(payload), timeout=60)
        result = response.json()["run_result"]
        print(result)
        # 获取标准输出和错误输出
        output = result["stdout"]
        errors = result["stderr"]
        return output, errors
    except requests.exceptions.RequestException as e:
        print(f"请求异常: {e}")
        exit(1)

run_code_with_input("test_input.py", "Hello World\n")

The output result is:

{'status': 'Finished', 'execution_time': 0.01669454574584961, 'return_code': 0, 'stdout': '开始读取输入...\n读到了: \n', 'stderr': ''}
输出: 开始读取输入...
读到了: 

错误:

It should print "Hello World"....