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How to Count Number of Line from Text File in Python

Submitted by razormist on Friday, October 11, 2024 - 23:51.

In this tutorial, we will learn how to program "How to Count the Number of Lines in a Text File using Python." We will explore how to count all the lines in a text file. The objective is to safely and accurately count the total number of lines from a text file. A sample program will be provided to demonstrate the coding process.

This topic is very easy to understand. Just follow the instructions I provide, and you'll be able to do it yourself with ease. The program I’ll show you demonstrates the proper way to count the total number of lines in a text file. I’ll also provide a simple and efficient method to achieve this. So, let's start coding!

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.
  1. ret = False
  2.  
  3. while True:
  4.         print("\n================= Count Number of Line from Text File =================\n\n")
  5.  
  6.  
  7.  
  8.         file = open("sample.txt", "r")
  9.         counter = 0
  10.  
  11.         file_text = file.read()
  12.         listing = file_text.split("\n")
  13.  
  14.         for i in listing:
  15.                 if i:
  16.                         counter += 1
  17.  
  18.         print("The number of line in the Text File is: ", counter)
  19.  
  20.  
  21.         opt = input("\nDo you want to try again?(yes/no): ")
  22.  
  23.         if opt.lower() == 'yes':
  24.                 ret=False
  25.         elif opt.lower() == 'no':
  26.                 ret=True
  27.                 print("Exiting program....")
  28.  
  29.         else:
  30.                 print("Please enter yes/no:")
  31.                 break
  32.  
  33.         if ret == False:
  34.                 continue

This script counts the number of non-empty lines in a text file. It opens a file named sample.txt, reads its contents, and splits the text by line breaks (\n). Then, it iterates through each line, incrementing a counter for every non-empty line. After processing the file, it prints the total count of lines. The program runs in a loop, giving the user the option to try again or exit.

Output:

There you have it we successfully created How to Count Number of Line from Text File 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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