Checks for blanks and numbers

01_recipe_name.py

# Get's recipe and checks it is not blank

# Not Blank Function goes here
def not_blank(question):
    error = "Your recipe name has numbers in it."

    valid = False
    while not valid:
        response = input(question)
        has_errors = ""

        # look at each character in string and if it's a number, complain
        for letter in response:
            if letter.isdigit() == True:
                has_errors = "yes"
                break

        if response == "":
            continue
        elif has_errors != "":
            print(error)
            continue
        else:
            return response


# Main Routine goes here

recipe_name = not_blank("What is the recipe name? ")

print("You are making {}".format(recipe_name))