Functions allow use to reuse code and make the code easier to understand. To create a
function type def (define) the function name and then in parentheses a comma separated list of
values that function can accept.
This function adds 2 values and returns the sum.
CODE
def add_numbers(num_1, num_2):
Return returns a value if needed
return num_1 + num_2
You call the function by name followed by passing comma
separated values if needed and a value may or may not be
returned
print("5 + 4 =", add_numbers(5, 4)
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