flask 获取 form 数据

参考：https://stackoverflow.com/questions/42154602/how-to-get-form-data-in-flask

看来 request.form 是一个 dict

from flask import Flask, request
app = Flask(__name__)

@app.route('/', methods=['GET', 'POST'])
def index():
    data = request.form['input_name']  # pass the form field name as key
    ...

from flask import Flask, request
app = Flask(__name__)

@app.route('/', methods=['GET', 'POST'])
def index():
    default_value = '0'
    data = request.form.get('input_name', default_value)
    ...