The Fibonacci sequence is a series of numbers where each number is the sum of the two preceding ones, typically starting with 0 and 1. In Python, creating a program to print this series is a fundamental exercise that helps beginners understand concepts like loops and conditionals.
Understanding the Logic
Before we dive into the code, let’s understand the logic behind the Fibonacci series:
- The series starts with 0 and 1.
- Every subsequent number is the sum of the previous two numbers.
Step 1: Setting Up the Program
To start, we initialize the first two numbers of the series. In Python, this can be done using simple variable assignments:
num1, num2 = 0, 1
Step 2: Deciding the Series Length
The user should be able to determine how many numbers of the series they want to see. We can achieve this by asking for user input:
n_terms = int(input("How many terms? "))
Input Validation
It’s good practice to validate user input. For instance, the number of terms should be a positive integer.
if n_terms <= 0:
print("Please enter a positive integer")
Step 3: Generating the Fibonacci Series
Now, we use a loop to calculate the series. A while loop works well for this purpose:
count = 0
while count < n_terms:
print(num1)
nth = num1 + num2
# update values
num1 = num2
num2 = nth
count += 1
Using For Loop
Alternatively, a for loop can be used:
for i in range(n_terms):
print(num1)
num1, num2 = num2, num1 + num2
Conclusion: Understanding and Flexibility
In conclusion, this Python program demonstrates basic concepts such as loops and conditionals. It’s also a flexible script that can be modified to explore more advanced Python features
by the Bito team. 
