Unresolved reference in defined function

Question

I'm trying to call a function that I defined in the code, however, it's saying that it's not defined? The error is where I have "add_to()" it's saying it's not defined. What am I doing wrong here?

grocery_list = ['salmon', 'beef', 'eggs', 'milk']

print(grocery_list)
question = input("Would you like to add anything to the list?: ")
if question == "yes" or "y" or "Y":
    add_to()
else:
    print("Enjoy your shopping")


def add_to():
    input("Please enter the item you'd like to add: ")
    grocery_list.append(str(input))


print(grocery_list)

Answer 1

You did function declaration after the function call. Please follow :PEP8 for more information and secondly if take any input from user, you need to store in some variable to use any way. Here is the code that add item perfectly.

grocery_list = ['salmon', 'beef', 'eggs', 'milk']

def add_to():
    s= input("Please enter the item you'd like to add: \n")
    grocery_list.append(str(s))

print(grocery_list)
question = input("Would you like to add anything to the list?: \n")
if question == "yes" or "y" or "Y":
    add_to()
else:
    print("Enjoy your shopping")



print(grocery_list)

Output :

['salmon', 'beef', 'eggs', 'milk']
Would you like to add anything to the list?:
yes
Please enter the item you'd like to add: 
yourhead
['salmon', 'beef', 'eggs', 'milk', 'yourhead']