As is, it does absolutely nothing. It is a type annotation for the main function that simply states that this function returns None. Type annotations were introduced in Python 3.5 and are specified …

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 …

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() …

Oct 9, 2008 · However, variables defined using the keyword "def" are treated as local variables, that is, local to this one script. Variables without the "def" in front of them are stored in a so …

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() …

Jul 8, 2017 · class Point: def __init__(self, x, y): _x = x _y = y Your x and y parameters would be stored in variables on the stack and would be discarded when the init method goes out of …

def add(x,y): return x+ y # calling this will require only x and y add(2,3) # 5 If we want to add as many arguments as we may want, we shall just use *args which shall be a list of more …

Aug 14, 2010 · The .def file on Win32 describes what functions get exported from a DLL. Unlike with .so files on gcc/Linux, where every symbol gets exported by default, you have to tell the …

Jan 14, 2021 · while googling, I find that "def" is used in python and groovy language. But, I am using java. So, how come it is possible to use keywords like "def" in java class? Is it possible …

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 …