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What does the "at" (#) symbol do in Python?
(14 answers)
how do decorated functions work in flask/python? (app.route)
(2 answers)
Closed 3 years ago.
I have tried a number of different tutorials in python and regularly come across the # symbol being used, but I am still not 100% sure what is going on.
This document describes how properties are used:
https://www.programiz.com/python-programming/property
#property
#temperature.setter
This document shows blueprints with flask
http://flask.pocoo.org/docs/1.0/tutorial/views/
#bp.route('/register', methods=('GET', 'POST'))
This is used in pytest:
https://docs.pytest.org/en/latest/fixture.html
#pytest.fixture
#pytest.mark.usefixtures("cleandir", "anotherfixture")
This discussion mentions another type
How do I correctly setup and teardown my pytest class with tests?
#classmethod
If you could offer any help, especially a good tutorial, it would be really appreciated.
Thanks
Mark
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This question already has answers here:
What is the naming convention in Python for variable and function?
(15 answers)
Closed 1 year ago.
I am currently learning some advanced Python at school, and my teacher has recommended the use of PascalCase for all variable, function, and class names. He says that since all Python keywords are lowercase, this convention will help to differentiate between one's own code and Python built-ins. However, this convention is unlike any other programming language, and I do not know whether it is acceptable to continue in this way. Can I use this convention for personal projects? And change it to a more universal convention when I need to?
Your professor is wrong; he goes against the industry standard style guide for Python, PEP-8. In particular, function and variable names should be lowercase, separated by underscores.
Following his advice where not forced to (that is, outside of assignments he grades) might cause you harm if used in a portfolio presented to future employers.
This question already has answers here:
Why does Python use 'magic methods'?
(8 answers)
Closed 1 year ago.
What advantage does one get by using Dunder methods when we can write our own methods in python? Why taking built-in functions and modifying them instead of writing our own?
One of the biggest advantages of using Python's dunder methods is that they provide a simple way to make objects behave like built-in types. That means you can avoid ugly, counter-intuitive, and nonstandard ways of performing basic operators. Writing your own methods sometimes may take more time and comparatively it is easy to take built in function and modify them as per your needs.
For more please have a look there
Why does Python use 'magic methods'?
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What SystemVerilog features should be avoided in synthesis?
(2 answers)
Closed 2 years ago.
Are array manipulation methods like find_index(), find() etc. synthesizable?
I use Quartus Prime Lite, if that helps.
Since these methods return dynamically allocated queues, they are not likely to be supported by current synthesis tools.
This question already has answers here:
How do I change a function's qualifiers via conditional compilation?
(1 answer)
How to write documentation tests for an internal API?
(1 answer)
Can I make an object public for integration tests and/or benchmarks only?
(2 answers)
Closed 3 years ago.
I use doc tests whenever reasonable for a number of reasons (locality, serves as an example, etc). I would like to use doc tests for functions and methods that are not marked pub. I figure this would probably involve using #[cfg(test)] in appropriate places, but I'm not sure.
How would you mark functions and methods so that they can be used in doc tests?
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Haskell read raw keyboard input
(6 answers)
Closed 6 years ago.
I'm writing simple console Pomodoro timer (as my Haskell learning exercise):
Until that time menu was based on the prompt line. But now I want to replace it with arrow-based menu, like in Yeoman:
How can I do it in Haskell?
I read about System.Console.Terminfo.Keys and other System.Console packages, but not found solution for my question.
One way to do that would be to use bindings to ncurses library. Infact ncurses shows you an example of handing the key character "Q" in their sample program.
Another nice Haskell solution is vty-ui which has got a nice documentation to it.