check.py

import hashlib
import requests
from asyncore import read
import time
from pathlib import Path

api = 'https://api.pwnedpasswords.com/range/'

def single_check():
    passwd = input('Type the password you want to test here: ')
    passhash = hashlib.sha1(passwd.encode('UTF-8')).hexdigest().upper()

    # Contacts the API and informs the user if there were any errors.

    resp = requests.get(api + passhash[:5])
    if resp.status_code != 200:
        print('An error happened while contacting the API.')

    # Searches the API response for the password hash and if found returns the hash of the password and 
    # the amount of times it was leaked.

    for line in resp.text.splitlines():
        hash = line.split(':')[0]
        n = line.split(':')[1]
        if hash == passhash[5:]: 
            print ('Your password was found in one of our databases. \nThe hash of your password is: {}. \nIt was leaked {} times.'.format(passhash, n))
    # At this point I was so tired of trying to find the right way to do this that I ended up with this quick fix. I may fix this in the future if there is any way to do so.
            flag = True
    try:
        flag
    except NameError: 
        print('Your password was not found on our databases.')

def bulk_check():

    # Asks for the .txt location, opens it and reads its content.
    filepath = input("Full path to the file with the passwords you want to test: ")
    file = open(filepath, 'r')
    lines = file.readlines()

    a = 0
    # Checks for leaks for each individual line.
    for line in lines:
        linehash = hashlib.sha1(lines[a].replace('\n', '').encode('UTF-8')).hexdigest().upper()

        a = a + 1

        resp = requests.get(api + linehash[:5])

        if resp.status_code != 200:
            print('An error hapened while contacting the API')

        for line in resp.text.splitlines():
            hash = line.split(':')[0]
            n = line.split(':')[1]
            if hash == linehash[5:]:
                print ('Your password was found in one of our databases. \nThe hash of your password is: {}. \nIt was leaked {} times.'.format(linehash, n))
                flag = True
        try:
            flag
            del(flag)
        except NameError:
            print('Your password was not found on our databases.')

def choose_opt():
    opt = input('[1] Single password test \n[2] Bulk password testing\n')
    if opt == '1':
        single_check()
    elif opt == '2':
        bulk_check()
    else:
        print ('\n \n This is not a valid option, try again. \n')
        choose_opt()

choose_opt()