An Introduction to Metaclasses
In most programming languages, classes are just pieces of code that define the rules for an object, but in Python, as you must hear that everything is an object: it turns out that this is true of classes themselves. …
What is Monkey patching
In Python, the term monkey patch only refers to dynamic modifications of a class or module at runtime, which means monkey patch is a piece of Python code that extends or modifies other code at runtime.
Monkey patching can only be done in dynamic languages, of which python is a…
Today, we will be discussing the optimization technique in Python. In this article, you will get to know to speed up your code by avoiding the re-evaluation inside a list and dictionary.
Here I have written the decorator function to calculate the execution time of a function.
import functools
import…
A context manager is an object that defines the runtime context to be established when executing a with statement. The context manager handles the entry into, and the exit from, the desired runtime context for the execution of the block of code.
Let’s have a look at below example, suppose…
How to use secure copy protocol
The SCP (secure copy protocol) is a network protocol, based on the BSD RCP protocol, that supports file transfers between hosts on a network. SCP uses secure shell (SSH) for data transfer and the same mechanisms for authentication.
Using SCP, you can copy file/directory from:
- your local machine to a…
Copy data in the right way to avoid bugs
Today, we will be discussing the copy in Python. There are three ways we can do it. In this article, you will get to know what each operation does and how they are different.
- Assignment operator
(=) - Shallow copy
- Deep copy
Assignment Operator (=)
>>> a = [1, 2, 3, 4, 5]
>>> b…Giving your functions defaults to work off of
Objects of built-in types like int, float, bool, str, tuple, and Unicode are immutable. Objects of built-in types like list, set, and dict are mutable. A mutable object can change its state or contents, whereas immutable objects cannot.
This is a very simple definition of mutable and immutable objects in…
Understand how memory management works, even though you don’t have to do it yourself
In languages like C or C++, the programmer is responsible for the dynamic allocation and deallocation of memory on the heap. But in Python, programmers don’t have to preallocate or deallocate memory.
Python uses the following garbage-collection algorithms for memory management:
- Reference counting
- A cycle-detecting algorithm (circular references)
Reference Counting
Reference counting…
Pickling allows you to serialize and de-serializing Python object structures. In short, Pickling is a way to convert a python object into a character stream so that this character stream contains all the information necessary to reconstruct the object in another python script.
To successfully reconstruct the object, The Pickled…
Any operation which is executed in the interpreter, GIL ensures that the interpreter is held by a single thread at a particular instant of time. it means that only one thread can be in a state of execution at any point in time.
Let’s take an example -
- Single-Threaded
import…
