python check if string is in input
try:
val = int(userInput)
except ValueError:
print("That's not an int!")
python check if string is in input
try:
val = int(userInput)
except ValueError:
print("That's not an int!")
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.")
python double check if wants to execute funtion
def get_non_negative_int(prompt):
while True:
try:
value = int(input(prompt))
except ValueError:
print("Sorry, I didn't understand that.")
continue
if value < 0:
print("Sorry, your response must not be negative.")
continue
else:
break
return value
age = get_non_negative_int("Please enter your age: ")
kids = get_non_negative_int("Please enter the number of children you have: ")
salary = get_non_negative_int("Please enter your yearly earnings, in dollars: ")
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