How to return two parameter from function

Question

I am quite new to python programming and I need some help solving a problem with the function below :

def format_name(first_name, last_name):
    string = first_name, last_name

    if string == first_name and last_name:
      return ('Name: ' + last_name + ', ' + first_name)

    elif string == '' and last_name:
      return ('Name: ' + last_name)

    elif string == first_name and '':
      return ('Name: ' + first_name)

    else:
      return ''

    return string

The desired outputs :

print(format_name("Ernest", "Hemingway"))

should return the string Name: Hemingway, Ernest ;

    print(format_name("", "Madonna"))

should return the string Name: Madonna;

print(format_name("Voltaire", ""))

should return the string Name: Voltaire ;

print(format_name("", ""))

should return an empty string.

Can anyone point out my mistake ?

None of your conditions will ever match. You are comparing a tuple with strings, — Klaus D.
– Klaus D., Commented May 10, 2020 at 1:46
Printing is not the same thing as returning. Saying that print(format_name("", "Madonna"))` 'Should return the string "Name: Madonna"' doesn't make a lot of sense. The word "return" there should be replaced by "print". In some ways I am being picky, but confusing print and return is a common mistake of first-time programmers learning Python. — John Coleman
– John Coleman, Commented May 10, 2020 at 1:46

CKasper · Accepted Answer · 2020-05-10 01:55:53Z

1

In your code you are compering a string with a tuple which is always False string = first_name, last_name string value will be a tuple like this ('fname', 'lname') and of course it's not equals to any string.

If you want to return multiple values as a returning value of the function you can do something like this:

def func():
  return "first string", "second string"

This will return the following tuple ("first string", "second string")

You can receive it as the following:

first, second = func()

first will be "first string" as a string and second will be "second string" as a string too in this case

You can check after that according your program logic.

Hope that somehow helped

answered May 10, 2020 at 1:55

CKasper

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