API.py

import requests,json
import googlemaps
from itertools import tee
import csv



API_key = 'AIzaSyD5ZxX5MPs-9gPdBzA0iMMes5Ac3f0uzYM'
gmaps = googlemaps.Client(key=API_key)

Latitude = list()
Longitude = list()
phone_number = list()
with open ('marks_test.csv', newline='\n') as csvfile:
    reader = csv.reader(csvfile)
    for row in reader:
        Latitude.append(row[4])
        Longitude.append(row[5])
        phone_number.append(row[3])



def distance_calculator(user_input3):
    API_key = 'AIzaSyD5ZxX5MPs-9gPdBzA0iMMes5Ac3f0uzYM'
    gmaps = googlemaps.Client(key=API_key)
    ur1 = "https://maps.googleapis.com/maps/api/distancematrix/json?origins=Seattle&destinations=San+Francisco&key=AIzaSyD5ZxX5MPs-9gPdBzA0iMMes5Ac3f0uzYM"
    for member_index in range(len(phone_number)):
        member_phone_number = phone_number[member_index]
        member_Latitude = Latitude[member_index]
        member_Longitude = Longitude[member_index]

        for elem in phone_number:
            if user_input3 == elem:
                print("Correct Phone Number.")
                member_index = phone_number.index(user_input3)
                return True
                
            if user_input3 not in phone_number:
                
                print("Incorrect Phone Number, Please try again")
                return False

while True:
    user_input3 = input("Please enter your telephone number")
    x = distance_calculator(user_input3)
    member_index = phone_number.index(user_input3)
    if x == True:
        LatOrigin = Latitude[member_index]
        LongOrigin = Longitude[member_index]
        origins = (LatOrigin, LongOrigin)

        LatDest = (52.409313)
        LongDest = (-1.504783)
        destination = (LatDest, LongDest)

        result = gmaps.distance_matrix(origins, destination, mode='walking')["rows"][0]["elements"][0]["distance"]["value"]
        result_2 = (result/1000)
        
        
            

        print("The distance between your home and Coventry Sport and Leisure Center is:",+(result_2),"mile")
        break
    else:
        print("Incorrect Phone Number, Please try again")
        continue
        

distance_calculator(user_input3)