Argparse tutorial python 2023 creating your first cli

Get Free GPT4o from https://codegive.com tutorial: creating your first cli with `argparse` in python `argparse` is a powerful module in python that allows you to create command-line interfaces (cli) for your applications. it provides an easy way to handle command-line arguments, which can help you make your scripts more user-friendly and flexible. in this tutorial, we will learn how to use `argparse` to create a simple command-line application that takes user input from the command line. #### step 1: setting up your environment make sure you have python installed on your machine. you can check if python is installed by running the following command in your terminal: if python is installed, you should see the version number. if not, download and install python from [python.org](https://www.python.org/downloads/). #### step 2: creating your first cli application let's create a simple cli application that can greet users based on their input. 1. *create a new python file* (e.g., `greet.py`): 2. *open `greet.py` in your favorite text editor* and add the following code: #### step 3: understanding the code **importing argparse**: we start by importing the `argparse` module. **creating the argumentparser**: we create an instance of `argumentparser` with a description of our program. **adding arguments**: we use `add_argument` to specify the positional argument `name`, which is required. we also add an optional argument `--greeting` that allows users to specify a custom greeting message. if not provided, it defaults to `"hello"`. **parsing arguments**: the `parse_args()` method processes the command-line arguments. **printing the greeting**: finally, we print the greeting using the parsed arguments. #### step 4: running your cli application now that your script is ready, you can run it from the command line. 1. open your terminal and navigate to the directory where `greet.py` is located. 2. run the script with the required argument: you should see the output: 3. ... #python 2023-24 aktu paper #python 2023 download #python 2023 roadmap #python 2023 model answer paper #python 2023 pdf python 2023-24 aktu paper python 2023 download python 2023 roadmap python 2023 model answer paper python 2023 pdf python 2023 version python 2023 books python 2023 mooc python 2023 question paper python 2023 python argparse store true python argparse boolean python argparse list of strings python argparse optional arguments python argparse required argument python argparse python argparse example python argparse default value