The sum of the numbers 1 to n can be calculated recursively as follows: The sum from 1 to 1 is 1. The sum from 1 to n is n more than the sum from 1 to n-1 Write a function named sum that accepts a variable containing an integer value as its parameter and returns the sum of the numbers from 1 to to the parameter (calculated recursively).

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Explanation:

The code

#function named sum that accepts a variable

#containing an integer value as its parameter

#returns the sum of the numbers from 1 to to the parameter

def sum(n):

if n == 0:

return 0

else:

#call the function recursively

return n + sum(n - 1)

#Test to find the sum()

#function with parameter 5.

print(sum(5))

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