The Best way to build a Python command line tool - Python Typer Tutorial

[@DevOpsJourney]

What's your favorite Python module for creating CLI applications?

[@bendover4728]

Click!

[@jwright123456789]

I have been using docopt, because I like having good docstrings, but it is limited and doesn't always behave like I think it should. Click and typer look good!

[@winnumber101]

"and it's just gonna show me my IQ of 500... so this is a pretty good feel-good app right now, feeling pretty smart" lmao

[@dramastar30]

Cool 😎. Typer is simply smart. Thanks for the demo🙏🏻

[@FrancoisSchnell]

Neat! Didn't know about typer, thanks!

[@abhityagi6562]

I am trying to use nubian, it is full fledged CLI creator with a feel of Cisco IOS or other network vendor devices, it was developed for LDShell by Facebook developers, but I can gurantee it is a hard nut to crack trying to include my commands and no luck so far after 5 hours..

[@dragon3602010]

hello, what if we are working with pipenv, how to make it working with the command typer to get the autocomplete ? and also can we combine fzf instead of the autocomplete? thanks

[@JH-vz3yj]

All nice and good but this, like all of the other tutorials it is for the command line arguments when you LAUNCH the python script (i.e., python nameOffScript --arg1 val etc...). My use case is that I have a command line within the launched program and I want it to parse my dozens of commands every time I receive command input. How do I bend it to that? I naively tried putting the app() call after the input command but it is just confused

[@suwenhao9864]

hi , sir . How could I install "typer" in powershell?

[@yoyopiyoyopi]

Nice Mate!

[@DevOpsJourney]

Thanks!

[@VOGTLANDOUTDOORS]

ENJOYED the video - nicely done ! INTERESTING little package, but some comments/challenges already encountered: 1. the documentation uses the term "main" FAR TOO MUCH and in TOO MANY PLACES to see when you NEED to use "main" and when it's OPTIONAL (sloppy documentation); THAT IS: - you DON'T need to name your file "main.py" python mtcbrain.py hello 2. the FIRST thing I noticed was that the command names MUST be in ALL LOWERCASE; NO CamelCase, NO underscored_Names :-( !!! THAT IS, the following function names either WORK or DON'T - hello() WORKS (we KNEW this) :-) - Hello() DOESN'T WORK (that came as a surprise, but it's also BAD NAMING CONVENTION for python FUNCTIONS, so nobody noticed anyways) :-O - helloThere() DOESN'T WORK (this came as a REAL SURPRISE, because this is likely the MOST COMMON NAMING CONVENTION in all of python) :-O - hello_there() also DOESN'T WORK (this came as ANOTHER SURPRISE) because this is the 2ND-MOST-COMMON NAMING CONVENTION in all of python) :-O - hellothere() WORKS and will have to do for anyone trying to use multi-word (sorry "multiword") function names ;-) 3. even your ARGUMENT NAMES must also be ALL LOWER CASE !!! THAT IS: - hellothere(userName: str) DOESN'T WORK - hellothere(username: str) DOES WORK I'll CONTINUE test-driving this package as it's the FIRST one I tried, so I've NOTHING to compare to which to compare it, and will report back. HOPE THIS HELPS OTHERS TRYING TO BUILD CLI-TYPE APPS IN PYTHON - it's a GOOD THING TO DO, and containerizing PYSIMPLEGUI type apps ISN'T CROSS-PLATFORM (yet) ! Cheers, -Mark Vogt, Principal Data Scientist, AVANADE (www.avanade.com)

[@charleswilson7596]

I'm having a little trouble getting the auto completion to work in ubuntu. I'm probably missing something basic. (venv) charles@pc-1:~/Projects/py_trader$ type type typeset (venv) charles@pc-1:~/Projects/py_trader$ typer --install-completion Command 'typer' not found, but can be installed with: sudo snap install erlang If you can take a look at it I would appreciate it. Also this is the simplest cli I have tried very intuitive. edit: didn't realize I had to pip install typer-cli

[@python360]

Thank you, this tip helped me get it working!

[@cralx2k]

Amazing channel... Thank you

[@thiagoalves5404]

Is it possible to make the CLI commands interactive?

[@jpeg.600x2]

how do u start the program from the command line? ive tried "python .\Program.py" (without quotations) but it hasnt worked

[@oxycodin2253]

Try python3 ./program.py

[@islandcave8738]

This is better than optparse and argparse.

[@muhammadnoorani7369]

I made a cli similar project, I want to deploy it and make it accessible to users. How can I do it??

[@ayobamishittu3651]

What do you need to do

[@zaurmahmudov1438]

thanks, helped me a lot today

[@DevOpsJourney]

Glad you found it helpful!

[@jabuci]

How does it differ from the click module?

[@kylethescientist]

Typer is built on top of click, so they are similar in many ways

[@SHONNER]

Reminds me of click 8.0.4 for Python.

[@writethatdown100]

What do I do if it says: "zsh: permission denied: ./main.py"?

[@DevOpsJourney]

Permission issue. Try marking your script as executable. I think this might help you if not google. chmod +x ./main.py

[@ItzShinePlayz]

How do I code a invalid cli when user type the wrong command that is not in the list using type?

[@jwalantbhatt527]

Create a Class with Enum

[@rickysmith1263]

Cool, thanks 😃

[@unstoppablegaming2079]

thanks

[@mac-cygwin6264]

i cant install typer autocompletion

[@DevOpsJourney]

What error do you get?

[@mac-cygwin6264]

@@DevOpsJourney typer is not a cmdlet, program or batch file, i used powershell

[@markgreen2170]

microsoft is always restart, restart, restart ...maybe, they will add the source command to their shell, lol! good video!

[@philtoa334]

Nice.

[@Wallee580]

4:10 You can just add the name variable as another argument to print, no need for an F string :D

[@Lunolux]

nice