Beginner guide to understanding Python’s slice object.
If you’re unsure about how Python indexes and slices strings, this article is for you! First, let’s explore indexes. (Indices for the grammatically correct!).
This is a companion article to my beginner series:
The first element in a sequence has the index 0. Not 1. This is often a source of confusion!
Although the first character has the index 0, and the last character has index 11, there are in fact 12 characters in this string.
The character at index position 6 is
Going forwards from 0,
W is at index position 6.
Going backwards from -1,
W is at index position -6.
The negative index begins at
-1, not zero. Why? Zero is already used for the first character in the forward index!
Python has a very handy
enumerate() method. It gives us each element of the character sequence, and the index starting at 0.
This prints out the following in my terminal:
[(0, ‘H’), (1, ‘e’), (2, ‘l’), (3, ‘l’), (4, ‘o’), (5, ‘ ‘), (6, ‘W’), (7, ‘o’), (8, ‘r’), (9, ‘l’), (10, ‘d’), (11, ‘!’)]
This corresponds nicely to the first image, above.
The character at index position 12 is… not there at all!
Trying to access an index position which is outside of the bounds raises an error:
IndexError: string index out of range
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Welcome to my Blog , In this article, you are going to learn the top 10 python tips and tricks.
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Welcome to my Blog, In this article, we will learn python lambda function, Map function, and filter function.
Lambda function in python: Lambda is a one line anonymous function and lambda takes any number of arguments but can only have one expression and python lambda syntax is
Syntax: x = lambda arguments : expression
Now i will show you some python lambda function examples:
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Python is awesome, it’s one of the easiest languages with simple and intuitive syntax but wait, have you ever thought that there might ways to write your python code simpler?
In this tutorial, you’re going to learn a variety of Python tricks that you can use to write your Python code in a more readable and efficient way like a pro.
Swapping value in Python
Instead of creating a temporary variable to hold the value of the one while swapping, you can do this instead
>>> FirstName = "kalebu" >>> LastName = "Jordan" >>> FirstName, LastName = LastName, FirstName >>> print(FirstName, LastName) ('Jordan', 'kalebu')
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Today you’re going to learn how to use Python programming in a way that can ultimately save a lot of space on your drive by removing all the duplicates.
In many situations you may find yourself having duplicates files on your disk and but when it comes to tracking and checking them manually it can tedious.
Heres a solution
Instead of tracking throughout your disk to see if there is a duplicate, you can automate the process using coding, by writing a program to recursively track through the disk and remove all the found duplicates and that’s what this article is about.
But How do we do it?
If we were to read the whole file and then compare it to the rest of the files recursively through the given directory it will take a very long time, then how do we do it?
The answer is hashing, with hashing can generate a given string of letters and numbers which act as the identity of a given file and if we find any other file with the same identity we gonna delete it.
There’s a variety of hashing algorithms out there such as
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The course will lead you from beginning level to advance in Python Programming Language. You do not need any prior knowledge on Python or any programming language or even programming to join the course and become an expert on the topic.
The course is begin continuously developing by adding lectures regularly.
Please see the Promo and free sample video to get to know more.
Hope you will enjoy it.
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Basic Knowledge To Use Computer
What will you learn
Will Be Expert On Python Programming Language
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