How to get form data in Flask? [duplicate]

Answer 1

Get form data from Flask's request object:

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

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

You can also set a default value to avoid 400 error, like this:

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

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