Question related to True and reverse function

Question

I don't understand following coding.

printName('Olga', 'Puchmajerova')
printName('Olga', 'Puchmajerova', True)
printName('Olga', 'Puchmajerova', reverse=True)

>>>
Olga Puchmajerova
Puchmajerova, Olga
Puchmajerova, Olga

My question is,,
1) Why there is comma in second, Third result is it because of True?
2) Why sequence is reversed is it also because of True?
3) Why they put reverse=True just instead of reverse?

I want to know all detail from this code.
Thank you :)

Answer 1

You skipped something... the actual defining of the printName function, like the most important part that has all the logic of why the output looks like that.

The function most likely has 3 parameters.
firstname, lastname, and reversed.

In python, you can make default values for each parameter if you want or not.

def printName(fname, lname, reverse=False):

See how i made the reverse parameter equal to False? False is that parameters default value.

Notice how in the second call, the last parameter is True. That makes reverse equal to true. (the third example is exactly the same)

Answer 2

Thank you for detail explanation 😆