python - What does def main () -> None do? - Stack Overflow
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 in PEP …
.def files C/C++ DLLs - Stack Overflow
Jul 21, 2014 · The advantage of def file is that, it helps you to maintain the backword compatibility with the already realsed dlls. i.e it maintains the ordinal numbers for apis. Suppose you add a new api in …
python - Differences between `class` and `def` - Stack Overflow
What is the main difference between class and def in python? Can a class in python interact with django UI (buttons)?
What is the difference between "def" and "val" to define a function
Sep 19, 2013 · def: For every call to even, it calls the body of the even method again. But with even2 i.e. val, the function is initialized only once while declaration (and hence it prints val at line 4 and never …
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() because that …
Groovy: what's the purpose of "def" in "def x = 0"?
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 called binding …
How do I define a function with optional arguments?
def some_function (self, a, b, c, d = None, e = None, f = None, g = None, h = None): #code The arguments d through h are strings which each have different meanings. It is important that I can …
python calling a def () inside of def () - Stack Overflow
Aug 1, 2018 · python calling a def () inside of def () Asked 7 years, 4 months ago Modified 3 years, 2 months ago Viewed 31k times
Why do some functions have underscores - Stack Overflow
May 24, 2024 · The other respondents are correct in describing the double leading and trailing underscores as a naming convention for "special" or "magic" methods. While you can call these …
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() function and call it …