What does -> mean in Python function definitions? - Stack Overflow
Jan 17, 2013 · funcdef: 'def' NAME parameters ['->' test] ':' suite The optional 'arrow' block was absent in Python 2 and I couldn't find any information regarding its meaning in Python 3. It …
What is a DEF function for Python - Stack Overflow
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 …
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 …
function - what is "def" in Java class - Stack Overflow
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 …
When does `def` run in python? When will function object be …
Mar 15, 2017 · def is executed whenever you hit it in parsing the source file. It defines the function. This means that the body of the function is assigned to the name, the parameters are …
python - What does def main () -> None do? - Stack Overflow
I am working through Mastering Matplotlib and in chapter two they introduce the following code snippet: #! /usr/bin/env python3.4 import matplotlib.pyplot as plt def main () -> None: plt.pl...
How can I use a global variable in a function? - Stack Overflow
Jul 11, 2016 · You may want to explore the notion of namespaces.In Python, the module is the natural place for global data:. Each module has its own private symbol table, which is used as …
How to use the def function in IF or ELSE/ ELIF satement in python?
Jan 3, 2016 · I have a sub program that uses a def option, so if i ever want to repeat the program. Eg: def op1(): print ("Something Something") So I just write in the program: op1() which makes …
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() …
How do I define a function with optional arguments?
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 …