
What does -> mean in Python function definitions? - Stack Overflow
Jan 17, 2013 · 13 def f(x) -> 123: return x My summary: Simply -> is introduced to get developers to optionally specify the return type of the function. See Python Enhancement Proposal 3107 …
Groovy: what's the purpose of "def" in "def x = 0"?
Oct 9, 2008 · Using the def keyword in larger programs is important as it helps define the scope in which the variable can be found and can help preserve encapsulation. If you define a method …
How can I return two values from a function in Python?
I would like to return two values from a function in two separate variables. What would you expect it to look like on the calling end? You can't write a = select_choice(); b = select_choice() …
How can I use `def` in Jenkins Pipeline? - Stack Overflow
Nov 10, 2017 · I am learning Jenkins Pipeline, and I tried to follow this Pipeline code. But my Jenkins always complains that def is not legal. I am wondering did I miss any plugins? I …
python - Why use def main ()? - Stack Overflow
Oct 28, 2010 · Variables inside def main are local, while those outside it are global. This may introduce a few bugs and unexpected behaviors. But, you are not required to write a main() …
What is the purpose of the `self` parameter? Why is it needed?
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 …
oop - What do __init__ and self do in Python? - Stack Overflow
Jul 8, 2017 · In this code: class A(object): def __init__(self): self.x = 'Hello' def method_a(self, foo): print self.x + ' ' + foo ... the self variable represents the instance of the object itself. Most …
What does ** (double star/asterisk) and * (star/asterisk) do for ...
Aug 31, 2008 · See What do ** (double star/asterisk) and * (star/asterisk) mean in a function call? for the complementary question about arguments.
How can I use a global variable in a function? - Stack Overflow
Jul 11, 2016 · How do I create or use a global variable inside a function? How do I use a global variable that was defined in one function inside other functions? Failing to use the global …
python - Meaning of a function "-> str" - Stack Overflow
@DanielRoseman def f(ham: str, eggs: str = 'eggs') in this block they did mention str, so why did they again have to mark/say the same at the last?