Q311. Webpack gives us a dependency graph. What does that mean?
Any time one file depends on another, webpack treats this as a dependency. This allows webpack to take non-code assets, such as images or web fonts, and also provide them...
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Q312. What are metaclasses in Python?
A metaclass is the class of a class. A class def ines how an instance of the class (i.e. an object) behaves while a metaclass def ines how a class behaves. A class is an ...
Q313. How to make a chain of function decorators?
How can I make two decorators in Python that would do the following? ```python @makebold ``` @makeitalic ```python def say(): return "Hello" ``` which should return: "Hel...
Q314. What is the difference between @staticmethod and @classmethod?
A staticmethod is a method that knows nothing about the class or instance it was called on. It just gets the arguments that were passed, no implicit first argument. It's ...
Q315. What's the difference between a Python module and a Python package?
Any Python file is a module, its name being the file's base name without the .py extension. ```python import my_module ``` A package is a collection of Python modules: wh...
Q316. What is GIL?
Python has a construct called the Global Interpreter Lock (GIL). The GIL makes sure that only one of your 'threads' can execute at any one time. A thread acquires the GIL...
Q317. Is it a good idea to use multi-thread to speed your Python code?
Python doesn't allow multi-threading in the truest sense of the word. It has a multi-threading package but if you want to multi-thread to speed your code up, then it's us...
Q318. How do I write a function with output parameters (call by reference)?
In Python arguments are passed by assignment. When you call a function with a parameter, a new reference is created that refers to the object passed in. This is separate ...
Q319. Whenever you exit Python, is all memory de-allocated?
The answer here is no. The modules with circular references to other objects, or to objects referenced from global namespaces, aren't always freed on exiting Python. Plus...
Q320. What is the purpose of the single underscore "_" variable in Python?
has 4 main conventional uses in Python: To hold the result of the last executed expression(/statement) in an interactive interpreter session. This precedent was set by th...