Click Documentation
click.palletsprojects.com › en › stable › quickstart
Quickstart — Click Documentation (8.5.x)
@click.group() def cli(): pass @cli.command() def initdb(): click.echo('Initialized the database') @cli.command() def dropdb(): click.echo('Dropped the database') You would then invoke the Group in your entry points or other invocations: ... Instead of using the @group.command() decorator, ...
Real Python
realpython.com › python-click
Click and Python: Build Extensible and Composable CLI Apps – Real Python
March 18, 2026 - In this example, you set the type argument to click.File. The "r" mode means that you’re opening the file for reading. Inside cli(), you start a for loop to iterate over the input files and print their content to the screen. It’s important to note that you don’t need to worry about closing each file once you’ve read its content. The File type automatically closes it for you once the command finishes running. ... (venv) $ python cat.py sample/hello.txt sample/realpython.md Hello, Pythonista!
Readthedocs
pymbook.readthedocs.io › en › latest › click.html
Building command line applications with Click — Python for you and me 0.5.beta1 documentation
In click.option() decorator, first we passed the flag using –verbose, then marked this option as a boolean flag, and then finally added the help text. $ myhello --help Usage: myhello [OPTIONS] Options: --verbose Will print verbose messages. --help Show this message and exit. $ myhello --verbose We are in the verbose mode. Hello World · By default, any boolean flag is treated as false. We can now add more options to our tool. For example, we will have a –name option which will take a string as input.
GitHub
github.com › pallets › click
GitHub - pallets/click: Python composable command line interface toolkit · GitHub
import click @click.command() ... {name}!") if __name__ == '__main__': hello() $ python hello.py --count=3 Your name: Click Hello, Click!...
dbader.org
dbader.org › blog › python-commandline-tools-with-click
Writing Python Command-Line Tools With Click – dbader.org
December 6, 2017 - The second and final change we’ll make is adding documentation for the overall click command. And the easiest and most Pythonic way is adding a docstring to our main function. Yes, we should do that anyways, so this isn’t even extra work: ... def main(location, api_key): """ A little weather tool that shows you the current weather in a LOCATION of your choice. Provide the city name and optionally a two-digit country code. Here are two examples: 1.
Click Documentation
click.palletsprojects.com
Welcome to Click — Click Documentation (8.5.x)
import click @click.command() @click.option('--count', default=1, help='Number of greetings.') @click.option('--name', prompt='Your name', help='The person to greet.') def hello(count, name): """Simple program that greets NAME for a total of COUNT times.""" for x in range(count): click.echo(f"Hello ...
DEV Community
dev.to › shrsv › build-easy-to-use-clis-in-python-with-click-23ah
Build Easy to Use CLIs in Python with Click - DEV Community
March 7, 2026 - Run python greet.py --help to see automatic help text. This is the foundation. Let’s build on it. Click makes it easy to add options (--flag) and arguments (positional inputs). Options are optional (duh), while arguments are required. Here’s an example with both:
ZetCode
zetcode.com › python › click
Python click - creating command line interfaces
January 29, 2024 - #!/usr/bin/python import click @click.command() @click.argument('name', default='guest') @click.argument('age', type=int) def hello(name, age): click.echo(f'{name} is {age} years old') if __name__ == '__main__': hello() In the example, we have two arguments: name and age.
AssemblyAI
assemblyai.com › blog › the-definitive-guide-to-python-click
The Definitive Guide to Python Click
July 28, 2021 - What can Python Click do for you? At the end of this guide, you’ll be able to create your own command line interfaces that can pass context, with commands that can take mandatory or optional arguments, and nested commands. This example Python project will show you how to interact with different click commands from the building blocks such as click.command to the more advanced commands such as click.make_pass_decorator.
Kite
kite.com › blog › python › python-command-line-click-tutorial
Kite.com
September 27, 2018 - kite.com · Inquiries: info@eradomains.com
iO Flood
ioflood.com › blog › python-click-library-guide-easily-build-command-line-applications-in-python
Python Click Library Guide: Easily Build Command Line Applications in Python
February 4, 2024 - In the above example, we’re passing a string ‘Hello, Python Click!’ from the cli group to the command command using the pass_obj decorator.
Snyk
snyk.io › advisor › click › click code examples
Top 5 click Code Examples | Snyk
@click.option('--bsub-opt', type=click.Choice(['bsubopt1', 'bsubopt2'])) @click.argument('bsub-arg1', required=False, type=click.Choice(['bsubarg1', 'bsubarg2'])) @click.argument('bbsub-arg2', required=False, type=click.Choice(['bbsubarg1', 'bbsubarg2'])) def bsub(bsub_opt): pass
Medium
medium.com › @afimaamedufie › getting-acquainted-with-python-click-fbfccf2bd990
Getting Acquainted with Python Click | by Afi Maame Dufie | Medium
November 25, 2022 - It allows arbitrary nesting of commands, automatic help page generation, and supports lazy loading of subcommands at runtime. Click was created as a supporting module for Flask(Python Framework). Subcommands are commands under a main command. For instance, the aws cli has top-level subcommands like s3 or child subcommands like cp. Example: aws s3 cp testfile s3://testbucket ·
Medium
chuan-zhang.medium.com › working-with-python-click-package-51602dc0ba2f
Working with Python Click Package | by Chuan Zhang | Medium
February 27, 2023 - The code snippet above is the simplest example showing how click turns a function into a command, which can be executed as follows. (tut-click) chuan@chuan-Inspiron-3793:~/demo-click/1_basic-concepts$ (tut-click) chuan@chuan-Inspiron-3793:~/demo-click/1_basic-concepts$ python ex01_cmd-no-param.py Hello World!
Digitalk
digitalk.tech › blog › python-click-or-how-to-write-professional-cli-applications
Mndwrk Blog - Python click or how to write professional CLI applications
June 17, 2022 - Take the following example: $ python3 myscript.py --option opt1 -s opt2 arg1 arg2 arg3 · In this case --option opt1 and -s opt2 are the options and are defined by the previously demonstrated @click.option decorators, while arg1, arg2, and arg3 are arguments that are defined with @click.argument.
Paiml
paiml.com › docs › home › books › python-command-line-tools › chapter01-getting-started-click
Chapter01 Getting Started Click | Pragmatic AI Labs and Solutions
This is the first example of a command-line application using Click, and it looks very straightforward. It uses a decorator to go over the main() function, and has the piece of magic at the bottom to tell Python it should call the main() function if it executes directly.
Top answer 1 of 6
28
I tried with Python 3.7 and Click 7 the following code:
import click
@click.command()
@click.option('-w', '--width', type=int, default=0)
@click.option('--option2')
@click.argument('argument')
def app(width, option2, argument):
click.echo("params: {} {} {}".format(width, option2, argument))
assert width == 3
assert option2 == '4'
assert argument == 'arg'
app(["arg", "--option2", "4", "-w", 3], standalone_mode=False)
app(["arg", "-w", 3, "--option2", "4" ], standalone_mode=False)
app(["-w", 3, "--option2", "4", "arg"], standalone_mode=False)
All the app calls are working fine!
2 of 6
16
This use-case is described in the docs.
Sometimes, it might be interesting to invoke one command from another command. This is a pattern that is generally discouraged with Click, but possible nonetheless. For this, you can use the Context.invoke() or Context.forward() methods.
cli = click.Group()
@cli.command()
@click.option('--count', default=1)
def test(count):
click.echo('Count: %d' % count)
@cli.command()
@click.option('--count', default=1)
@click.pass_context
def dist(ctx, count):
ctx.forward(test)
ctx.invoke(test, count=42)
They work similarly, but the difference is that Context.invoke() merely invokes another command with the arguments you provide as a caller, whereas Context.forward() fills in the arguments from the current command.
GeeksforGeeks
geeksforgeeks.org › click-module-in-python-making-awesome-command-line-utilities
Click Module in Python | Making awesome Command Line Utilities - GeeksforGeeks
March 14, 2019 - Using the system module from the os library in Python allows you to interact with the Linux command line directly from your Python script. This module provides a way to execute system commands, enabling you to automate various tasks by integrating Linux commands seamlessly into your Python code.
Medium
medium.com › @rahulmadan_18191 › why-not-click-for-cli-using-python-e70c41c4539a
CLICK for CLI using Python. The click library is an amazing tool… | by Rahul Madan Raju | Medium
January 25, 2023 - In this example, the cli function is decorated with the click.group decorator, which creates a parent command. The func1, and func2 functions are decorated with the cli.command decorator, which creates child commands. Each child command has its own set of command options and arguments. Therefore calling in CLI has python main.py func1 Maverick , the terminal will display “Hey, Maverick!
dbader.org
dbader.org › blog › mastering-click-advanced-python-command-line-apps
Mastering Click: Writing Advanced Python Command-Line Apps – dbader.org
January 2, 2018 - Click will now use the API key stored in an environment variable called API_KEY and fall back to the --api-key option if the variable is not defined. And since examples speak louder than words, here’s how you’d use the command with an environment variable: $ export API_KEY="<your-api-key>" $ python cli.py London The weather in London right now: light intensity drizzle.