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How to Store the Output of a Recursive Function in Python

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by Abdul Rawoof A R dot icon Updated: Jan 31, 2023

Guide Kit Guide Kit  

The basic idea behind recursion is to reduce a complex problem into simpler subproblems and solve each subproblem independently. In Python, a recursive function calls itself during its execution. It solves problems that can be broken down into smaller, identical subproblems. 


There are several ways to store the output of a recursive function in Python. One common approach is to use a global variable, which can be accessed and modified by any function in the program. 

  • In this case, a variable is defined outside of the recursive function and is accessible to it. Every time the function is called with a new value of the parameter given; it appends that value to the output list. 


Another approach is to pass an additional parameter to the recursive function and use that parameter to store the output. 

  • In this case, an output variable is passed as a parameter to the recursive function. Every time the function is called with a new value of the given parameter, it appends that value to the output list. 


For more information about storing the output of a recursive function in Python, refer to the code below. 

Fig : Preview of the output that you will get on running this code from your IDE.

Code

How to store the output of a recursive function in Python?

PythondotLines of Code : 14dotLicense : Strong Copyleft (CC BY-SA 4.0)

Dependent Libraries : 
d = {1: {3: {}, 4: {6: {}}}, 5: {}}

def pretty(d, indent=0):
    msg = ''
    for key, value in d.items():
        msg += '\t' * indent + str(key) + '\n'
        if isinstance(value, dict):
            msg += pretty(value, indent+1)  # <=== see how return value is used
        else:
            msg += '\t' * (indent+1) + str(value) + '\n'
    return msg

print(pretty(d))

Instructions

Follow the steps carefully to get the output easily.

  1. Install python on your IDE(Any of your favorite IDE).
  2. Copy the snippet using the 'copy' and paste it in your IDE.
  3. Run the file to generate the output.


I hope you found this useful.

I found this code snippet by searching for 'How to store the output of a recursive function in Python'in kandi. You can try any such use case!

Environment Tested

I tested this solution in the following versions. Be mindful of changes when working with other versions.

  1. The solution is created in PyCharm 2021.3.
  2. The solution is tested on Python 3.9.7.


Using this solution, we are able to store the output of a recursive function in python with simple steps. This process also facilities an easy way to use, hassle-free method to create a hands-on working version of code which would help us to store the output of a recursive function in python.

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