# #3 Top Techniques To Check Fibonacci Series In Python

Nowadays, Python is one of the growing programming languages, and its users are experimenting with several unique functions to perform a task with ease. The Fibonacci series is one of those. Well, it has been seen that some of the traders always believe that Fibonacci numbers are crucial in finance as it uses for creating percentages and ratios that traders use.

If you are a Python user and want to get the details on the Fibonacci series in Python, you are in the right place. Today, I will help you to know how you can find out the Fibonacci series using different methods. But before that, let me explain to you about the series.

## What is the Fibonacci series?

The Fibonacci series is considered the number set, starting with a zero or a one, followed by a one, and continuing as per the rule. Each number (that is also known as a Fibonacci number) is equal to the addition of the preceding 2 numbers.

Note: Always remember that by default, the first couple numbers of any of the Fibonacci series are 0 & 1.

Now, let’s start with today’s topic, “Fibonacci series in Python.”

## Do you know whether a number is a Fibonacci number or not!

Yes, you read it right!

If I give you a random number and ask you if it is a Fibonacci number or not, will you answer it? You might not! Even the mathematics students get confused with it. But not anymore!

I will help you with a short Python program to find whether the number is a Fibonacci number or not!

Output:

## Top 3 techniques to find the Fibonacci series in Python

There are different approaches to finding the Fibonacci series in Python. But the three methods consider as the best ways to perform it. Let’s check one by one.

• While Loop

It is used to execute the statement blocks that repeat the condition until the condition is satisfied. Whenever the condition is false, the loop will immediately leave the statement and exit. While loop considers in the indefinite iteration’s category.

Let’s take an example to find the Fibonacci series in Python using the WHILE loop.

Output:

• Recursion Method

It is described as the defining process in terms of itself. Or we can say that recursion is the process where the function calls itself indirectly or directly. Using this method, you can easily get the Fibonacci series in Python.

Let’s take an example of it:

Output:

• For loop

The for loop is useful to iterate over the sequences (that can either be the tuple, list, dictionary, string, or any set). Using the for loop, the user can iterate a set of the instructions once for the items in the tuple, set, and list. (You can check our blog to check how to convert list to tuple Python)

The for loop method is useful for finding the Fibonacci series in Python. Let’s check how you can use it for this purpose.

Output:

## Bonus Point

### Is it possible to get the Fibonacci series in Python using the Python functions?

So, how can you use it to get the Fibonacci series in Python? Let’s check out a Python program to understand it.

### Example #1: By using lambda & reduce method

Output:

[0, 1, 1, 2, 3, 5, 8]

Explanation:

In the output list, there are two parameters, 0 and 1. Now, add them like x[-1] that will be 0, and x[-2] that will be 1 where variable x is appended. Here, the reduce() method calls the same function for the iteration and reduces the result to the single cumulative value.

### Example #2: By using lambda and map function

Output:

[0, 1, 1, 2, 3, 5, 8, 13, 21]

Explanation:

Here, I will take the list fib_list that already has 0 & 1. In the next iteration, it uses as input. The sum’s result will be appended within the list.

## Final Thought!

Today, Python is one of the growing and trending languages that has given a reputation among developers. That is why several individuals, even non-programmers, are trying their best to learn this programming language as Python has several daily applications in our lives. Some of our users have requested that we must provide alternative methods or techniques to find out the Fibonacci series in Python.

In the above section, I have explained three alternatives that you can easily use to find out the series. Apart from this, I have mentioned a Python program that you can use to know whether the number is a Fibonacci number or not! Do the experiments with the programs and develop your Python skills.