Getting strange and unexpected output from python while loop-CodePudding

I made a simple while loop to increase a number. And then I made a completely separate if condition to print a statement under certain circumstances. I don't understand why the two are being joined together.....

Write a program whose input is two integers. Output the first integer and subsequent increments of 5 as long as the value is less than or equal to the second integer.

Ex: If the input is:

-15
10

the output is:

-15 -10 -5 0 5 10

Ex: If the second integer is less than the first as in:

20
5

the output is:

Second integer can't be less than the first.

For coding simplicity, output a space after every integer, including the last.

My code:

''' Type your code here. '''
firstNum = int(input())
secondNum = int(input())

while firstNum <= secondNum:
    print(firstNum, end=" ")
    firstNum  =5
    


if firstNum > secondNum:
    print("Second integer can't be less than the first.")

Enter program input (optional)

-15
10

Program output displayed here

-15 -10 -5 0 5 10 Second integer can't be less than the first.

CodePudding user response：

Your while loop is ensuring firstNum > secondNum by the time it finishes running. Then, you check to see if firstNum > secondNum (which it is), and your print statement gets executed.