Category: Science & Tech (Page 8 of 35)

The Difference Between copy() and deepcopy() in Python

August 14, 2022 / Fatos Morina / 0 Comments

person using black laptop computer — Photo by freestocks on Unsplash

There are two methods that you can use to copy objects in Python, namely, copy() and deepcopy().

They are similar and can be confusing for a lot of people. There is however a subtle difference.

How to Quickly Replace a Text in a String in Python

August 7, 2022 / Fatos Morina / 0 Comments

You may need to read text files and do some formatting of those strings.

With formatting, it means that you may also need to replace a certain portion of the string with another string.

Let us assume that we have a sentence and want to replace all the occurrences of the word i with I.

How to Round Numbers Using Negative Numbers in Python

July 31, 2022 / Fatos Morina / 0 Comments

If you are working with many numbers in Python, you probably need to do some rounding to cut off some digits that you may not need at all.

For example, let us say that you are calculating an average salary in a company and the average number that you have found is around 54,334.218

This may not be a number that can look good in a final report that you want to submit to someone. It would help if you instead rounded it.

How to Quickly Check Whether a String is a Palindrome in Python

July 24, 2022 / Fatos Morina / 0 Comments

A palindrome is a word that is the same whether you read it forwards or backward.

Checking whether an input string is a palindrome can be a common interview question that you may encounter at least in one of the technical rounds of your interviews.

3 Ways to Check if a List is Empty in Python

July 17, 2022 / Fatos Morina / 0 Comments

clear glass jar with white powder inside — Photo by Kier In Sight on Unsplash

Lists are used pretty much all over the place in Python and in other programming languages as well.

Checking whether they have elements or not represents something that you may need to do.

One interesting thing about Python is that it allows you to do the same thing in more than just one way, as we can see in this case.

How to Quickly Check Whether a String starts with a character in Python

July 10, 2022 / Fatos Morina / 0 Comments

toddler's standing in front of beige concrete stair — Photo by Jukan Tateisi on Unsplash

The index in a string is the position of a substring that is part of that string.

When you want to check whether a string in Python starts with a specific character, you can specify the index 0 and write the name of the variable of the string in front:

Gist

How to Quickly Extract elements from lists in Python

July 3, 2022 / Fatos Morina / 0 Comments

bottle surrounded green leaves — Photo by Stefan Rodriguez on Unsplash

There can be many cases when you want to get elements from a list of named variables and not have to always use indexes.

For example, let us assume that we have a list that has five elements:

my_list = [1, 2, 3, 4]

How to Safely Iterate Through 2 Lists in Python

June 26, 2022 / Fatos Morina / 0 Comments

white printer paper beside white ceramic mug — Photo by Paico Oficial on Unsplash

Using for loops when iterating through 2 lists that have different lengths can be error-prone, especially when the lengths of these lists can change with time.

Let us see an example to see when that happens:

Gist

How to Quickly Split a String on the First N Occurrences in Python

June 19, 2022 / Fatos Morina / 0 Comments

brown wooden blocks on white surface — Photo by Brett Jordan on Unsplash

You have probably seen cases when you can do splits of strings into multiple parts based on a pattern that is observed in the string. For example, let us say that we want to save all the words that are part of a sentence.

To do that, we usually try to do split the sentence into words based on the spaces that we find, such as:

Gist