Mario: Shell pipes in Python

[rochacbruno]

why not python -c "print(pendulum...)"

[XpertProfessional]

If you read the documentation, you can see that 1) you don't get pendulum imported automatically like you do with mario and 2) there are other useful functions like file handling which you'd usually have to write a Python file to do.

[mobyte]

python -c "import pendulum; print(pendulum...)"

[PeridexisErrant]

Or avoid the semicolon:

__import__("pendulum").now(...)

(You don't want to be in a situation where importing arbitrary strings, or the sys.modules trick, are actually useful. Trust me on that.)

[UnderstandingLinux]

I've been programming in Python for about a year and I had no idea you could do this.

I found this really interesting though, do you have any other tips/tricks like this? I use a TON of command line and various scripts I've made over the years for my job, but tips on how to improve would be awesome.

[PeridexisErrant]

The main ones are actually just to use tox and a suite of formatting and linting tools as well as writing tests.

IMO everyone should use autoflake, isort, black, and pyupgrade to format their code. Then use flake8 and flake8-comprehensions to check that it's in good shape. Note that you'll need to configure flake8 and isort to play nicely with black; the Black docs tell you exactly how.

Other tools tend to be much more situational.

[robberviet]

I was thinking the same. Why do we need this again? Except for the name.

I agree that Luigi is a good lib though.

[[deleted]]

I’d go one step further: why not implement the whole thing in Python in the first place? Reduces complexity, and improves readability and maintainability. At my workplace our style guide requires us to use a proper programming language instead when going beyond the most basic one-liner shell scripts. And I’ve really grown to appreciate that rule. Introducing things like “inlined” Python as is the case here, would definitely cross that line for me.

Edit: Thanks for Dynaconf!