Getting started building a python cli with argparse

sure! building a command-line interface (cli) in python using the `argparse` module is a great way to create user-friendly interfaces for your scripts. this tutorial will guide you through the basics of setting up a cli with `argparse`, complete with code examples.

### what is `argparse`?

`argparse` is a python module that provides a way to handle command-line arguments passed to your script. it allows you to define what arguments your program requires and handles parsing those arguments, providing help messages and error responses when the user provides incorrect input.

### getting started

1. **installation**: if you have python installed, `argparse` comes with it by default, so you don’t need to install anything separately.

2. **basic structure**: the basic structure of a script using `argparse` involves creating an `argumentparser`, adding arguments, and then parsing them.

### example: a simple cli tool

let’s create a simple cli tool that takes a name and an age as arguments and prints a greeting message.

#### step 1: import `argparse`

#### step 2: create an argument parser

you can create an instance of `argumentparser` and customize it with a description of what your program does.

#### step 3: add arguments

you can add arguments using the `add_argument` method. let’s add two arguments: `name` (a string) and `age` (an integer).

#### step 4: parse arguments

after defining your arguments, you need to parse them. this will convert the command-line inputs into a format your python code can work with.

#### step 5: use the arguments

now you can use the parsed arguments in your program.

### complete example

here’s the complete code for our simple cli tool:

### running your cli tool

3. run the script with the required arguments:

you should see the output:

### additional features

the `argparse` module pro ...

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