How to Find Prime Numbers Within a Given Range in Python
In this tutorial, we will learn how to program "How to Find Prime Numbers Within a Given Range in Python." The objective is to find all prime numbers based on a specified range. This tutorial will guide you through the process step by step, demonstrating how to implement an efficient search function for identifying prime numbers. By the end, you will have a clear understanding of how to complete this task effectively in Python.
This topic is straightforward to understand. Just follow the instructions I provide, and you will complete it with ease. The program I will demonstrate will show you the correct and efficient way to swap the first and last characters of a string. So, let’s dive into the coding process!
Getting Started:
First you will have to download & install the Python IDLE's, here's the link for the Integrated Development And Learning Environment for Python https://www.python.org/downloads/.
Creating Main Function
This is the main function of the application. The following code will display a simple GUI in terminal console that will display program. To do this, simply copy and paste these blocks of code into the IDLE text editor.- while True:
- print("\n============== Find Prime Numbers Within a Given Range ==============\n")
- r=int(input("Enter a number: "))
- for a in range(2,r+1):
- k=0
- for i in range(2,a//2+1):
- if(a%i==0):
- k=k+1
- if(k<=0):
- print(a)
- opt = input("\nDo you want to try again?(yes/no): ")
- if opt.lower() == 'yes':
- ret=False
- elif opt.lower() == 'no':
- ret=True
- print("Exiting program....")
- else:
- print("Please enter yes/no:")
- break
- if ret == False:
- continue
This Python program finds and prints all prime numbers up to a user-specified number by checking each number in the range for divisibility. It uses nested loops to count divisors and identifies a number as prime if it has no divisors other than 1 and itself. The program runs in a loop, allowing the user to try again or exit.
Output:
There you have it we successfully created How to Find Prime Numbers Within a Given Range in Python. I hope that this simple tutorial help you to what you are looking for. For more updates and tutorials just kindly visit this site. Enjoy Coding!
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