
when to use functions in python and when not to ... - Stack Overflow
Aug 12, 2018 · Functions are a way of compartmentalizing code such that it makes it both easier to read and easier to manage. In this case, there are a few concepts you must understand before implementing functions to solve your problem. Functions follow the format:
In Python, when should I use a function instead of a method?
The Zen of Python states that there should only be one way to do things- yet frequently I run into the problem of deciding when to use a function versus when to use a method. Let's take a trivial example- a ChessBoard object.
python - How can I use a global variable in a function? - Stack …
Jul 11, 2016 · In Python, the module is the natural place for global data: Each module has its own private symbol table, which is used as the global symbol table by all functions defined in the module. Thus, the author of a module can use global variables in the module without worrying about accidental clashes with a user’s global variables.
mean in Python function definitions? - Stack Overflow
Jan 17, 2013 · In more detail, Python 2.x has docstrings, which allow you to attach a metadata string to various types of object. This is amazingly handy, so Python 3 extends the feature by allowing you to attach metadata to functions describing their parameters and return values. There's no preconceived use case, but the PEP suggests several.
python - What does ** (double star/asterisk) and * (star/asterisk) …
Aug 31, 2008 · BONUS: From python 3.8 onward, one can use / in function definition to enforce positional only parameters. In the following example, parameters a and b are positional-only , while c or d can be positional or keyword, and e or f are required to be keywords:
python - How do I call a function from another .py file ... - Stack ...
#Import defined functions from myfun import * #Call functions Print_Text() c=Add(1,2) Solution2: if this above solution did not work for Colab. Create a foldermyfun; Inside this folder create a file __init__.py; Write all your functions in __init__.py; Import …
python - How can I call a function within a class? - Stack Overflow
I have this code which calculates the distance between two coordinates. The two functions are both within the same class. However, how do I call the function distToPoint in the function isNear? class Coordinates: def distToPoint(self, p): """ Use pythagoras to find distance (a^2 = …
How can I use a DLL file from Python? - Stack Overflow
Oct 31, 2008 · This page has a very simple example of calling functions from a DLL file. Paraphrasing the details here for completeness: It's very easy to call a DLL function in Python. I have a self-made DLL file with two functions: add and sub which take two arguments. add(a, b) returns addition of two numbers sub(a, b) returns substraction of two numbers
python - How are lambdas useful? - Stack Overflow
Curiously, the map, filter, and reduce functions that originally motivated the introduction of lambda and other functional features have to a large extent been superseded by list comprehensions and generator expressions. In fact, the reduce function was removed from list …
How to import functions from other projects in Python?
Ideally both projects will be an installable python package, replete with __init__.py and setup.py. They could then be installed with python setup.py install or similar. If that is not possible, don't use execfile()! Manipulate the PYTHONPATH to add Foo so that import Project1.file1 works. For example, from Project2/fileX.py: