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sharing your code

Use optional arguments

To turn a required argument to a function into an optional argument, provide
the argument with a default value. When no argument value is provided, the
default value is used. When an argument value is provided, it is used instead
of the default. The key point is, of course, that the default value for the
argument effectively makes the argument optional.
To provide a default value for any function argument, specify the default
value after the argument name: Both arguments
are REQUIRED.

def print_lol(the_list, level):

The addition of a

def print_lol(the_list, level=0): default value has
turned “level” into an
OPTIONAL argument.

With the default value for the argument defined, you can now invoke the
function in a number of different ways:

Invoke the function and
provide both arguments.

nester.print_lol(movies, 0)
Invoke the function with
one argument and use
nester.print_lol(movies) the default value for
the second.
Invoke the function with
both arguments, but nester.print_lol(movies, 2)
provide an alternative
starting value for the
second argument.

Your function now supports different signatures, but the
functonality remains as it was.

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