Day 22 Guide: Mastering Command Line Arguments in Python

Introduction :

Welcome back to my Python journey! Yesterday, I laid the foundation with builtins modules.

Today, I dove into command_line arguments, essential for any programming language. Let's explore what I learned!

Command Line Arguments

• .The Argument which are passing at the time of execution are called Command Line Arguments

• . Within the Python Program this Command Line Arguments are available in argv. Which is present in SYS Module.

• . argv is not Array it is a List.

Example:

To check type of argv from sys

import argv
print(type(argv))

Note:

• argv[0] represents Name of Program. But not first Command Line Argument.

• argv[1] represent First Command Line Argument

Example:

Write a Program to display Command Line Arguments

from sys import argv 
print(“The Number of Command Line Arguments:”, len(argv)) 
print(“The List of Command Line Arguments:”, argv) 
print(“Command Line Arguments one by one:”) 
for x in argv: 
    print(x)

• : Within the Python program command line arguments are available in the String form.

• Based on our requirement, we can convert into corresponding type by using type casting methods.

Example :

from sys import argv 
print(argv[1], type (argv[1]))

Example :

Write a program to find sum of all arguments

from sys import argv 
sum=0 
args=argv[1:] 
for x in args : 
    n=int(x) 
    sum=sum+n 
print("The Sum:",sum)

challenges:

1. Understanding commandline argument.

2. Handling coding errors.

Resources:

1. Official Python Documentation: commandline argument

2. W3Schools' Python Tutorial: commandline argument

3. Scaler's Python Course: commandline argument

Conclusion:

Day 22 was a success!

commandline argument are now under my belt.

Connect with me:

LinkedIn : [ https://www.linkedin.com/in/archana-prusty-4aa0b827a/ ]

GitHub: [ https://github.com/p-archana1 ]

Join the conversation:

Share your own learning experiences or ask questions in the comments.

Next Post: Day 22: we'll learn File Handling.

Happy learning!

THANK YOU!!