Flask and python does not allow recursive function Twitch API

Question

I have a function that generates all video URLs of some user on Twitch

def get_videos(cursor=None):  # functiont to retrieve all vod URLs possible, kinda slow for now
    params_get_videos = {('user_id', userid_var)}  # params for request.get
    if cursor is not None:  # check if there was a cursor value passed
        params_get_videos = list(params_get_videos) + list({('after', cursor)})  # add another param for pagination
    url_get_videos = 'https://api.twitch.tv/helix/videos'  # URL to request data
    response_get_videos = session.get(url_get_videos, params=params_get_videos, headers=headers)  # get the data
    reponse_get_videos_json = response_get_videos.json()  # parse and interpret data
    file = open(MyUsername+" videos.txt", "w")
    for i in range(0, len(reponse_get_videos_json['data'])):  # parse and interpret data
        file.write(reponse_get_videos_json['data'][i]['url'] +'\n')  # parse and interpret data
    if 'cursor' in reponse_get_videos_json['pagination']:  # check if there are more pages
        get_videos(reponse_get_videos_json['pagination']['cursor'])  # iterate the function until there are no more pages

this works perfectly fine on its own (with other functions) but whenever i try to call it from a dummy flask server like this

from flask import Flask
from flask import render_template
from flask import request
from main import *

app = Flask(__name__)

@app.route('/')
def hello_world():
    return render_template("hello.html")

@app.route('/magic', methods=['POST', 'GET'])
def get_username():
    username = request.form.get('username')
    get_videos()
    return ("Success")

It no longer acts recursive and only prints first 20 values. What am I doing wrong?

Answer 1

I'm new also so I don't have enough reputation to make a comment, I have to post an answer. I'm confused by your get_username method, once you grab the username from the form you're not sending it anywhere? It looks like on your get_videos method you are maybe hard coding the username by saving a variable called MyUsername outside of this method?

What you should do imo is send the username you grab from the form, do your get_videos method like this.

get_videos(username)

And change your other method to this def get_videos(MyUsername, cursor=None):