CODEWITHSUNDEEP
pythonlistfor-loopwhile-loop
ar809
ar809

Reputation: 91

How to increment a value in a loop

I'm not sure how to properly write the question. So, the idea I have is to print the original random values I get from a list. After the user inputs a 1 inside a while loop it creates one new random number from the list. Every time the user enters 1 as the input, it keeps creating a new random number and prints the previous random numbers together.

import random

numbers = [1, 2, 3, 4, 5]
random_number = [random.choice(numbers) for _ in range(2)]
print(random_number)

while True:
    choice = int(input("Press [1] to continue [2] to exit: "))
    if choice == 2:
        break

    elif choice == 1:
        extra_number = [random.choice(numbers) for _ in range(1)]
        for i in extra_number:
            print("\nFirst Numbers:", random_number, "Extra Numbers:", i)

This loop will return a random number from the list. However, every time the user enters 1 it replaces the old one with a new one. I want to still return those old values and also print a new one every time the user enters 1. So, I thought that maybe increment will work, but I don't know how to make it work. I also tried enumerate and range(len()) and found it a bit confusing to understand. I would appreciate it if someone could help me or if there is an easier way of doing this.

Upvotes: 2

Views: 335

Answers (2)

osint_alex
osint_alex

Reputation: 1022

Does this do what you want?

import random

numbers = [1, 2, 3, 4, 5]
random_number = [random.choice(numbers) for _ in range(2)]
extra_numbers = []
print(random_number)

while True:
    choice = int(input("Press [1] to continue [2] to exit: "))
    if choice == 2:
        break

    elif choice == 1:
        extra_number = random.choice(numbers)
        extra_numbers.append(extra_number)
        print("\nFirst Numbers:", random_number, "Extra Numbers:", extra_numbers)

Upvotes: 2

Anass
Anass

Reputation: 436

I am not sure if I understood the question. Here I added the list old_numbers where you save the pervious values.

import random

numbers = [1, 2, 3, 4, 5]
old_numbers=[]


while True:
    choice = int(input("Press [1] to continue [2] to exit: "))
    if choice == 2:
        break

    elif choice == 1:
        extra_number = random.choice(numbers)
        old_numbers.append(extra_number)
        print("\nFirst Numbers:", old_numbers, "Extra Numbers:", extra_number)

The result:

Press [1] to continue [2] to exit: 1

First Numbers: [3] Extra Numbers: 3

Press [1] to continue [2] to exit: 1

First Numbers: [3, 4] Extra Numbers: 4

Press [1] to continue [2] to exit: 1

First Numbers: [3, 4, 4] Extra Numbers: 4

Press [1] to continue [2] to exit: 1

First Numbers: [3, 4, 4, 1] Extra Numbers: 1

Press [1] to continue [2] to exit: 1

First Numbers: [3, 4, 4, 1, 2] Extra Numbers: 2

Press [1] to continue [2] to exit: 1

First Numbers: [3, 4, 4, 1, 2, 3] Extra Numbers: 3

Press [1] to continue [2] to exit: 1

First Numbers: [3, 4, 4, 1, 2, 3, 3] Extra Numbers: 3

Press [1] to continue [2] to exit: 1

First Numbers: [3, 4, 4, 1, 2, 3, 3, 3] Extra Numbers: 3

Press [1] to continue [2] to exit: 1

First Numbers: [3, 4, 4, 1, 2, 3, 3, 3, 4] Extra Numbers: 4

Press [1] to continue [2] to exit: 1

First Numbers: [3, 4, 4, 1, 2, 3, 3, 3, 4, 4] Extra Numbers: 4

Press [1] to continue [2] to exit: 2

Upvotes: 2

Related Questions