Python, recursions in range(a,b)

I am trying to finish 1 exercise but i cannot find a solution myself.
I get a number and function should use recursion to find a value:

if n == 1: return 1
elif n != 1: fun(n-1) + n


but i want to provide to my function 2 values, starting point and finishing point and my function finds all values in range(starting point, finishing point).

return

elif

1 Answer
1

Define your function with two parameters. One of them gets idecremented when you make the recursive call, the other is kept the same:

def sumRange(start, end):
if start > end:
return None # or could signal an error
elif start == end:
return start
else:
return sumRange(start, end-1) + end


Don't forget that when you make the recursive call, you have to return the result.

if start>end

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