For the last half hour ive been stuck on this one:

def square(n):

"""Returns the square of a number."""

squared = n**2

print "%d squared is %d." % (n, squared)

return squared

# Call the square function on line 9! Make sure to

# include the number 10 between the parentheses.

```
print "%d squared is %d." % (n, squared)
return square(10)
```

it says: Did you remember to call square(10) on line 9?

what does it mean call it?