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I'm totally lost on what to do here.
def number(square) retun square x square
Brandon WhiteTreehouse Moderator
Your logic is spot on, but you have some syntactical issues in your code.
The syntax for defining a function in python is as follows:
def function_name(parameter): # the code inside the function # must be indented so that python understands # it's a part of the function return "some value"
You'll need to add a set of colons after your function name. Then you'll need to indent your return statement (also you've left the second "r" out of return).
Finally, x does not mean multiplication in python. There is a specific operator used in python to multiple values, and it is called the multiplication operator. The multiplication operator is the following character: *
So make those changes, and you'll be all set.