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 This is an indication of how things may develop in future as Python is adopted extensively - an indication towards strong typing - this is my personal observation.

Sep 10, 2013 · I am new to coding Python and I just can't seem to understand what a Def function is! I have looked and read many tutorials on it and I still don't quite understand. Can somebody explain to me what...

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() because that would call the function twice. Values aren't returned "in variables"; that's not how Python works. A function returns values (objects). A variable is just a name for a value in a given ...

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 in your script, it won't have access to the variables that are created with "def" in the body of the main script as they aren't in scope: x = 1 def y = 2 public bar() {

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 self parameter for a method and got a TypeError, use TypeError: method () takes 1 positional argument but 2 were given instead. If OP omitted self. in the body of the method and got a …

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 object-oriented languages pass this as a hidden parameter to the methods defined on an object; Python does not. You have to declare it explicitly. When you create an instance of the A class …

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 already installed groovy, j...

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 keyword where appropri...

Aug 31, 2008 · See What do ** (double star/asterisk) and * (star/asterisk) mean in a function call? for the complementary question about arguments.

Feb 23, 2009 · Why is super() used? Is there a difference between using Base.__init__ and super().__init__? class Base(object): def __init__(self): print "Base created&quot ...