how to code flappy bird in python

from random import randint
print('hi man generate a number to all of the nubmer of this world')
print('select the first number')
first_number = input()
print('this is the first ' + first_number)
print('select the second number')
second_number = input()
print('this is the second number' + second_number)
print('press enter to know the number')
input()
final = randint(int(first_number), int(second_number))
print(final)