This article shows how you can do Stemming and Lemmatisation on your text using NLTK.
You can read about introduction to NLTK in this article: Introduction to NLP & NLTK

This article shows how you can use the default Stopwords corpus present in Natural Language Toolkit (NLTK).
To use stopwords corpus, you have to download it first using the NLTK downloader. In my previous article on Introduction to NLP & NLTK, I have written about downloading and basic usage example of different NLTK corpus data.

Natural Language Processing (NLP) is about the processing of natural language by computer. It’s about making computer/machine understand about natural language. Natural language means the language that humans speak and understand.
Natural Language Toolkit (NLTK) is a suite of Python libraries for Natural Language Processing (NLP). NLTK contains different text processing libraries for classification, tokenization, stemming, tagging, parsing, etc.

This article deals with implementing Bubble Sort algorithm using Python programming language.
Bubble Sort is a simple sorting algorithm that compares each element in the list with its adjacent element and sort that pair of elements if they are not in order.

This article deals with implementing Hash Table using Python programming language. Hash Table is a data structure where data are stored in an associative manner (in key, value format). The key/index is unique. This kind of storage makes it easier to find the data later on.
Hash Table stores data into an array format. It uses a hashing function that generates a slot or an index to store/insert any element or value.

This article deals with the binary search algorithm implementation in Python programming language.
Binary search is an improvement to linear search. Binary search requires the searched list to be an ordered list, i.e. the list items should be sorted in ascending order (increasing order).

This article deals with the linear search or sequential search algorithm. It’s a very simple search algorithm.
Linear Search

This article shows how you can get custom options values and configurable options values in shopping cart page in Magento 1.x.
We use the checkout session quote collection for this purpose.

This article shows how you can unlock the locked reindexing process Magento 2 via command line.
Problem
Sometimes a scenario comes when the indexing process gets locked at the time of reindexing. When the process or the index type is locked then you cannot reindex that particular locked index type. The reindex will always skip that index type.