Python3 flask接收文件并将其发送到另一个api

from flask import Flask, request
import requests

app = Flask(__name__)

@app.route('/upload', methods=['POST'])
def upload_file():
    file = request.files['file']  # 获取上传的文件
    file.save('uploaded_file.txt')  # 保存文件到本地
    return '文件上传成功'

@app.route('/send', methods=['GET'])
def send_file():
    file = open('uploaded_file.txt', 'rb')  # 打开上传的文件
    files = {'file': file}  # 构建文件参数
    response = requests.post('http://api.example.com/upload', files=files)  # 发送文件到另一个API
    file.close()  # 关闭文件
    return response.text

if __name__ == '__main__':
    app.run()