从Flask的请求对象获取表单数据：
from flask import Flask, requestapp = Flask(__name__)@app.route('/', methods=['GET', 'POST'])def index(): data = request.form['input_name'] ...你还可以设置默认值以避免400错误，如下所示：
from flask import Flask, requestapp = Flask(__name__)@app.route('/', methods=['GET', 'POST'])def index(): default_name = '0' data = request.form.get('input_name', default_name) ...
