[Python] Why am I getting TypeError: 'int' object is not iterable in my Python function?...

I'm trying to write a Python function that calculates the sum of squares of numbers in a list. However, when I run my code, I get the following error:

def sum_of_squares(numbers):
total = 0
For num in numbers:
total += num ** 2
return total


print(sum_of_squares(5))

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