How to stop program after wrong input in if else conditions

Question

I wrote a program in python language actually i am biggner now
I want to stop my program after insert wrong conditions in if/else/elif conditions
Pls help me

Answer 1

#Use sys.exit().

import sys
five = int(input("Enter the number 5: "))
if five==5:
print("\nInput accepted.")
else:
sys.exit("\nInvalid. Abnormal exit.")
print("Program exited normally.")