Ch 45 default parameters

 def user_info(first_name=None,last_name=None,age=None):

print(f"your first name is {first_name}")

print(f"your first name is {last_name}")

print(f"your first name is {age}")

user_info()

#if your not type anything the all defult valur is None and it show None in when user don't type anything

#i try to put input command on def but its not working