[Python] What mistake do I have in this Python code accessing an API? [closed]

#!/usr/bin/env python3
import json
import requests
from requests import Request


ticker_List = ['AAPL','F','T']

my_url = "https://yfapi.net/v6/finance/quote"

my_headers = {'x-api- key':"sLEW68I38624sh1R......kZXyVJvsZ775NKanjI"}

my_querystring = {"symbols":ticker}

for ticker in ticker_List:
response = requests.Request("GET", url=my_url, headers=my_headers, params=my_querystring)

# Create the API Data in json format
API_Data = response.json()

# Bypass header detail
results = API_Data['quoteResponse']['result']


My error message:

NameError: name 'API_Data' is not defined
​

Why is my request not working? I thought definition was API_Data = response.json().

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