Function arguments

Question

I want to make a function that prints hello world if no argument is provided or the argument if it is provided
https://code.sololearn.com/cHtyvT4ky0rt/?ref=app
Help.

Answer 1

Like you provided the default value for parameter option 'Hello world!'
Give parameter "a" a default value of None. That way if you enter greet(), when your code checks parameter "a", it sees it is none and prints Hello World!
https://code.sololearn.com/cHPh0qK8fep3/?ref=app

Answer 2

Your code works fine.
The error being generated is caused by your def(), which is missing the arguments you defined during the set up

Answer 3

I am thinking you may need to create an if / else scenario which will determine which of 2 def options to run depending upon the input.
Nice concept to play with

Answer 4

Slick Nice!

Answer 5

Thanks guys.

Answer 6

But...damn! That was Slick😄😃😃

Answer 7

By the way, I think a cleaner way to set it up would be this:
def greet(a=None):
print(a or 'Hello World')