Recursion In python

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Recursion In python 

To mitigate this, Python institutes a maximum limit for function calls i.e.
function calls. Imagine a recursive function that has no base case and
theoretically run forever if there was infinite memory, if trying to run this funct
Python, you will reach the 1000 call limit and the following error will be raise
can be read in the Traceback:
Recursion Error: maximum recursion depth exceeded.
It is possible in Python to see the current recursion limit as well as set the rec
limit.
# to view the recursion limit, do the following:
from sys import getrecursionlimit
print (getrecursionlimit()) # value printed would be 1000 by default
# to change the recursion limit, do the following:
from sys import setrecursionlimit
setrecursionlimit (2000)
print (getrecursionlimit()) # value printed will now be 2000
Compulsory Task 1
Follow these steps:
In a file called sum_recursion, create:
O a function that takes a list of integers and an integer as 2
arguments. The integer will represent an index point.
This function needs to add the sum of all the numbers in the list
up until and including the given index point by making use of
recursion and no loops.
O
Examples of input and output:
beriondev
adding_up_to([1, 4, 5, 3, 12, 16], 4)
=> 25
=> adding the number all the way up to index 4 (1 + 4 + 5 + 3 + 12)
adding_up_to([4, 3, 1, 5], 1)
Copyright © 2018 Hyperion Development.
Transcribed Image Text:To mitigate this, Python institutes a maximum limit for function calls i.e. function calls. Imagine a recursive function that has no base case and theoretically run forever if there was infinite memory, if trying to run this funct Python, you will reach the 1000 call limit and the following error will be raise can be read in the Traceback: Recursion Error: maximum recursion depth exceeded. It is possible in Python to see the current recursion limit as well as set the rec limit. # to view the recursion limit, do the following: from sys import getrecursionlimit print (getrecursionlimit()) # value printed would be 1000 by default # to change the recursion limit, do the following: from sys import setrecursionlimit setrecursionlimit (2000) print (getrecursionlimit()) # value printed will now be 2000 Compulsory Task 1 Follow these steps: In a file called sum_recursion, create: O a function that takes a list of integers and an integer as 2 arguments. The integer will represent an index point. This function needs to add the sum of all the numbers in the list up until and including the given index point by making use of recursion and no loops. O Examples of input and output: beriondev adding_up_to([1, 4, 5, 3, 12, 16], 4) => 25 => adding the number all the way up to index 4 (1 + 4 + 5 + 3 + 12) adding_up_to([4, 3, 1, 5], 1) Copyright © 2018 Hyperion Development.
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