pq the input x iteration DOES NOT interfere with the while loop x iteration, where it is the same variable?

Question

I am learning programming logic with Python and I don’t understand how the input x DOES NOT interfere with the iteration of the x from the while loop, which is the same variable. Please explain to me, Valew!!!

#!/usr/bin/python3

numeros = [0,0,0,0,0]

x = 0

while x < 5: 
    numeros[x] = int(input("Números %d:" %(x + 1) )) 
    x += 1

while True:
    escolhido = int(input("Que posição você quer imprimir (0 para sair): "))
    if escolhido == 0:
        break
    print("Você escolheu o número: %d" %( numeros[escolhido -1] ))

Answer 1

What happens is that when you do any operation with a variable, it does not change value.

x = 1
x + 1 // 2
print(x) // 1

To change the value of a variable you need to assign a new value to it.

x = 1
print(x) // 1
x = x + 1 // mesmo que x += 1
print(x) // 2

So only the second x is what changes the value. Because at first it simply returns the summed value but does not change the original value of the variable because it has no assignment.