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Articles by Hafeezul Kareem
Page 26 of 26
Python - Join tuple elements in a list
In this article, we are going to learn how to join tuple elements in a list. It's a straightforward thing using join and map methods. Follow the below steps to complete the task.Initialize list with tuples that contain strings.Write a function called join_tuple_string that takes a tuple as arguments and return a string.Join the tuples in the list using map(join_tuple_string, list) method.Convert the result to list.Print the result.Example# initializing the list with tuples string_tuples = [('A', 'B', 'C'), ('Tutorialspoint', 'is a', 'popular', 'site', 'for tech learnings')] # function that converts tuple to string def join_tuple_string(strings_tuple) -> str: return ...
Read MoreLinear search on list or tuples in Python
In this article, we are going to learn how to apply a linear search on lists and tuples.A linear search starts searching from the first element and goes till the end of the list or tuple. It stops checking whenever it finds the required element.Linear Search - Lists & TuplesFollow the below steps to implement linear search on lists and tuples.Initialize the list or tuple and an element.Iterate over the list or tuple and check for the element.Break the loop whenever you find the element and mark a flag.Print element not found message based on the flag.ExampleLet's see the code.# ...
Read MorePython - Make pair from two list such that elements are not same in pairs
In this article, we are going to learn how to make pairs from two lists such that no similar elements make a pair. Follow the below steps to solve the problem.Initialize the lists with elements.Iterate over the lists and append the pair into a list if the corresponding elements from the lists are not same.Print the result.ExampleLet's see the code.# initializing the lists list_1 = [1, 2, 3, 4, 5] list_2 = [5, 8, 7, 1, 3, 6] # making pairs result = [(i, j) for i in list_1 for j in list_2 if i != j] # ...
Read MorePrefix matching in Python using pytrie module
In this article, we are going to learn about the pytrie module to prefix matching strings from a list of strings. Let's see an example to understand it clearly.Input: List: ['tutorialspoint', 'tutorials', 'tutorialspython', 'python'] Prefix: 'tutorials' Output: ['tutorialspoint', 'tutorials', 'tutorialspython']We can achieve it in different ways. In this tutorial, we are going to achieve it using the pytrie module.From pytrie module, we will use the pytrie.StringTrie data structure. We can perform create, insert, search, and delete operations.First, install the pytrie module with the following command.pip install pytrieLet's see steps to achieve the desired output.Import the pytrie module.Initialize the list, ...
Read MoreForm validation using Django
In this article, we are going to learn how to validate a form in django. Django comes with build-in validators for forms. We can use them in the tutorial to validate forms.You must familiar with the Django to follow along with this tutorial. If you are not familiar with Django, then this article is not for you.Set up the basic Django project with the following commands.mkdir form_validation cd form_validation python -m venv env (Activate environment based on your OS) pip install django===3.0 django-admin startproject form_validation . (Don't forget dot(.) at the end) python manage.py startapp ...
Read MoreFetching text from Wikipedia's Infobox in Python
In this article, we are going to scrape the text from Wikipedia's Infobox using BeatifulSoup and requests in Python. We can do it in 10 mins. It's straightforward.We need to install bs4 and requests. Execute the below commands to install.pip install bs4 pip install requestsFollow the below steps to write the code to fetch the text that we want from the infobox.Import the bs4 and requests modules.Send an HTTP request to the page that you want to fetch data from using the requests.get() method.Parse the response text using bs4.BeautifulSoup class and store it in a variable.Go to the Wikipedia page ...
Read MoreAuto-complete feature using Trie
We have a Trie, and when a user enters a character, we have to show the matching string the Trie. This feature we call it as auto-completion. For example, if a Trie contains "xyzzzz, ""xyz, " "xxxyyxzzz" and when the user enter xy, then we have to show them xyzzzz, xyz, etc.., Steps to achieve the result.Search for the string using the standard Trie algorithm.If the string is not present, then return -1.If the string is present and is the end of a word in Trie, then print the string.If the matching string doesn't have any node, then return.Else print ...
Read MoreAdd the slug field inside Django Model
In this tutorial, we are going to learn about the SlugField in Django.SlugFieldSlugField is a way to generate a URL using the data which we already have. You can generate URL using your title of the post or page. Let's see one detailed example.Let's say we have an article with name This is from Tutorialspoint with id = 5. Then we can have URL as www.tutorialspoint.com/posts/5/. It's difficult for the content writers to recognize the article with the previous URL. But, if you have a URL like www.tutorialspoint.com/this-isfrom-tutorialspoint, then it's easy for us to identify the piece. So, SlugField is ...
Read MoreChange data type of given numpy array in Python
We have a method called astype(data_type) to change the data type of a numpy array. If we have a numpy array of type float64, then we can change it to int32 by giving the data type to the astype() method of numpy array.We can check the type of numpy array using the dtype class. Let's check the data type of sample numpy array.Example# importing numpy library import numpy as np # creating numpy array array = np.array([1, 2, 3, 4, 5]) # printing the data type of the numpy array print(array.dtype)OutputIf you run the above code, you will get the ...
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