# FAQ: Code Challenge: Python Functions - Dog Years

This community-built FAQ covers the “Dog Years” exercise from the lesson “Code Challenge: Python Functions”.

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This exercise can be found in the following Codecademy content:

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4 posts were split to a new topic: Why does my print statement print “none”?

Some more fun with user input.
I’d like help with setting up another function to make sure only int is entered.
I’d like help with setting up another function to make sure only str is entered.
That way I can call the function each time I ask for user input…
Thanks for any help you can offer in this regard.

``````def dog_years_input():
"""This functon asks the user for two ints . This will take a string
and an ints.
First is user name, second is number of years. It will calc the dog
years age * 7."""
print("This will take two inputs. First is name and then a number.\nThen it will return the dog years.")
name = str(input("name "))
age = float(input("age int "))
dog_years = age * 7
return name + " you are " + str(dog_years) + " years old in dog years."
#challenge if dog_years < Y  then Z
#challenge make sure str and int are entered!
dog_years_input()
``````