Extracting Emails from Text in Python To extract emails from text, we can use regular expressions. In the following example, we use the regex package to define a pattern for email IDs and then use the findall() function to retrieve…
Python Binary to ASCII ASCII-to-binary and binary-to-ASCII conversions are performed by the built-in binascii module. It features intuitive functions for converting input data. The following program demonstrates the use of the binascii module and its functions b2a_uu and a2b_uu .…
Python Constrained Search Many times, after obtaining search results, we need to perform further searches within the existing results. For example, given text, our goal is to retrieve URLs and extract their various components, such as the protocol and domain.…
Reading Files Backwards in Python When we typically read a file, the contents are read line by line from the beginning. However, there are cases where we want to read the last line first. For example, if the data in…
Python PDF Processing Python can read PDF files, extract text from them, and then print the contents. To do this, we first need to install the required module, PyPDF2. Below are the commands to install this module. Pip should already…
Python Text Replacement Replacing an entire string or part of a string is a very frequent requirement in text processing. The replace() method returns a copy of a string with all occurrences of the old string replaced by the new…
Python Stemming Algorithms In natural language processing, we often encounter situations where multiple words share a common root. For example, the words “agree,” “agreeing,” and “agreeable” share the same root word, “agree.” Any search involving these words should treat them…
Python Chunk Classification Chunk-based classification involves classifying text into groups of words rather than individual words. A simple scenario is tagging text within sentences. We will use a corpus to demonstrate classification. We have chosen the conll2000 corpus, which contains…
Processing Word Documents with Python To read a Word document, we need to use the docx module. First, install docx as shown in the example below. Then, write a program that uses the various functions in the docx module to…
Searching and Matching in Python There are two basic operations using regular expressions that appear similar but have significant differences. re.match() checks for a match only at the beginning of a string, while re.search() checks for a match anywhere in…