
slice - How slicing in Python works - Stack Overflow
Python slicing is a computationally fast way to methodically access parts of your data. In my opinion, to be even an intermediate Python programmer, it's one aspect of the language that it is necessary to …
python - What does ** (double star/asterisk) and * (star/asterisk) do ...
Aug 31, 2008 · BONUS: From python 3.8 onward, one can use / in function definition to enforce positional only parameters. In the following example, parameters a and b are positional-only, while c …
python - What do * (single star) and / (slash) do as independent ...
Jan 9, 2020 · The function parameter syntax (/) is to indicate that some function parameters must be specified positionally and cannot be used as keyword arguments. (This is new in Python 3.8) …
How do I declare custom exceptions in modern Python?
By "modern Python" I mean something that will run in Python 2.5 but be 'correct' for the Python 2.6 and Python 3.* way of doing things. And by "custom" I mean an Exception object that can include extra …
mean in Python function definitions? - Stack Overflow
Jan 17, 2013 · In more recent versions of Python >= 3.5, though, it has a defined meaning. PEP 3107 -- Function Annotations described the specification, defining the grammar changes, the existence of …
python - How do I define a function with optional arguments? - Stack ...
466 I have a Python function which takes several arguments. Some of these arguments could be omitted in some scenarios.
python - What do *args and **kwargs mean? - Stack Overflow
What exactly do *args and **kwargs mean? According to the Python documentation, from what it seems, it passes in a tuple of arguments. def foo (hello, *args): print (hello) for each in args:...
How do I declare an array in Python? - Stack Overflow
Aug 23, 2022 · Python has an independent implementation of array() in the standard library module array " array.array() " hence it is incorrect to confuse the two. Lists are lists in python so be careful …
What does the "at" (@) symbol do in Python? - Stack Overflow
Functions, in Python, are first class objects - which means you can pass a function as an argument to another function, and return functions. Decorators do both of these things. If we stack decorators, the …
python - What are iterator, iterable, and iteration? - Stack Overflow
In Python, iterable is an object that is, well, iterable, which simply put, means that it can be used in iteration, e.g. with a for loop. How? By using iterator. I'll explain below. ... while iterator is an object …