This article is about python programming skills from afternerd

Python Lambdas

Python Lambdas Explained (With Examples)

Why we need lambdas (difference between traditional functions)

lambdas are only useful when you want to define a one-off function.
In other words, a function that will be used only once in your program. These functions are called anonymous functions.

Python Enumerate

Python Enumerate Explained (With Examples)

How do I get the index of an element while I am iterating over a list?

The pythonic way is to use built-in enumerate function

enumerate list

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L = ['apples', 'bananas', 'oranges']
for idx, val in enumerate(L):
  print("index is %d and value is %s" % (idx, val))

other enumerate

enumerate tuple
enumerate list of tuples
enumerate a string
Enumerate with a Different Starting Index

Python: How to Sort a List?

Python: How to Sort a List? (The Right Way)

Two ways:

sort: object method
sorted: built-in function

Contents:

Sorting a list of numbers
Sorting a list of strings
Sorting a list of strings in a case insensitive manner
Sorting a list of tuples
Sorting a list of tuples by the second element
Sorting a list of objects

Useful parameters:

reverse
key

Python Lists: Append vs Extend

Python Lists: Append vs Extend (With Examples)

`append`

The append method is used to add an object to a list.

This object can be of any data type, a string, an integer, a boolean, or even another list.

`extend`

extend is another very common list method.

Unlike append that can take an object of any type as an argument, extend can only take an iterable object as an argument.