# Fibonacci Series using While Loop in Python

A Fibonacci series is a series of numbers in which each is the sum of the two preceding numbers. The sequence starts with 0 and 1; each subsequent number is the sum of the previous two. This article will discuss generating the Fibonacci series using a while loop in Python.

## Generating Fibonacci Series using While Loop

The easiest way to generate the Fibonacci series using a while loop in Python is to use three variables. Let’s call these variables a, b, and c. We initialize the first two values of a and b to 0 and 1, respectively. We then use a while loop to generate the series. Inside the while loop, we first print the value of a, then update the values of a, b, and c. The updated value of a is set to b, the updated value of b is set to c, and the updated value of c is set to the sum of a and b. The loop continues until a certain condition is met. The code for generating the Fibonacci series using a while loop is shown below:

``````a, b = 0, 1
while a < 1000:
print(a)
a, b = b, a + b

``````

In the above code, we have initialized the values of a and b to 0 and 1, respectively. We have also set a condition for the loop to run until a value is less than 1000. Inside the loop, we first print the value of a using the print statement. We then update the values of a, b, and c. The updated value of a is set to b, which means that the previous value of b becomes the new value of a. The updated value of b is set to the sum of a and b, which means that the new value of b is the sum of the previous values of a and b.

## Recursion vs While Loop

Recursion and while loop is two common ways to generate the Fibonacci series in Python. Recursion is a method of solving problems that involves breaking a problem down into smaller sub-problems until the sub-problems become simple enough to be translated directly. In the case of generating the Fibonacci series, we can use recursion to define a function that generates the sequence.

While loop, on the other hand, is a control flow statement that allows code to be executed repeatedly based on a given condition. Using a while loop to generate the Fibonacci series is more efficient than recursion because it requires less memory and is faster.

## Conclusion

In this blog post, we have discussed how to generate the Fibonacci series using a while loop in Python. We have also compared the advantages of using a while loop over recursion. The Fibonacci series is a significant sequence of numbers with applications in many fields, including mathematics, science, and computer science. Understanding how to generate the Fibonacci series using a while loop is an important skill for any Python programmer.