Python – Limited Search Often, after receiving a search result, we need to search deeper within the existing search results. For example, given a body of text, we may want to retrieve a URL and extract its various components, such…
Python – WordNet Interface WordNet is an English dictionary, similar to a traditional vocabulary, and NLTK includes WordNet for English. We can use WordNet as a reference to obtain word meanings, usage examples, and definitions. A collection of similar words…
Python – Reading Strings as Files After reading a file, it is treated as a dictionary with multiple elements. Therefore, we can access each line of the file using the element’s index. In the following example, we have a file…
Python – Text Processing Generally speaking, munging means cleaning up anything messy by transforming it. In our case, we’ll see how transforming text can yield some results that create desirable changes in our data. At a simple level, it’s simply…
Python – String Immutability In python, string data type is immutable. This means that string values cannot be updated. We can verify this by trying to update a part of the string, which will result in an error. # cannot…
Python – Text Processing State Machine A state machine is a program designed to control the flow of data in an application. It is a directed graph consisting of a set of nodes and a set of transition functions. Processing…
Sentiment Analysis in Python Semantic analysis involves analyzing the general sentiment of an audience. This could be reactions to a news story, a movie, or any tweet about a topic of discussion. Typically, these reactions are captured from social media…
Python – Filtering Duplicate Words Often, we need to analyze text for words that appear only once. Therefore, we need to eliminate duplicate words from the text. This can be achieved by using word tokens and set functions in nltk.…
Python – Frequency Distribution When processing text, it’s often necessary to count the frequency of words in a set of text. This can be achieved by applying the word_tokenize() function and appending the result to a list to count the…
Python – Converting Binary to ASCII Binary-to-ASCII and ASCII-to-binary conversions are handled by the built-in binascii module. It has a very simple usage, using functions that accept input data and perform conversions. The following program demonstrates the use of the…