
What does -> mean in Python function definitions? - Stack Overflow
Jan 17, 2013 · In Python 3.5 though, PEP 484 -- Type Hints attaches a single meaning to this: -> is used to indicate the type that the function returns. It also seems like this will be enforced in …
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 …
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 …
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.
python - How do I define a function with optional arguments?
466 I have a Python function which takes several arguments. Some of these arguments could be omitted in some scenarios.
What does asterisk * mean in Python? - Stack Overflow
Does * have a special meaning in Python as it does in C? I saw a function like this in the Python Cookbook: def get (self, *a, **kw) Would you please explain it to me or point out where I can …
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:...
python - What is the purpose of the `self` parameter? Why is it …
For a language-agnostic consideration of the design decision, see What is the advantage of having this/self pointer mandatory explicit?. To close debugging questions where OP omitted a …
python - What does ** (double star/asterisk) and * (star/asterisk) …
Aug 31, 2008 · See What do ** (double star/asterisk) and * (star/asterisk) mean in a function call? for the complementary question about arguments.
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 …