allow software to enter data by two users but not repeat code example
Example 1: python check if input() gives error
try:
# Note: Python 2.x users should use raw_input, the equivalent of 3.x's input
age = int(input("Please enter your age: "))
except ValueError:
print("Sorry, I didn't understand that.")
else:
if age >= 18:
print("You are able to vote in the United States!")
else:
print("You are not able to vote in the United States.")
Example 2: python double check if wants to execute funtion
age = sanitised_input("Enter your age: ", int, 1, 101)
answer = sanitised_input("Enter your answer: ", str.lower, range_=('a', 'b', 'c', 'd'))