trrex: efficient keyword mining with regular expressions

The package includes a function that represents a collection of keywords (strings) as a regular expression. This regular expression can be used for multiple purposes, such as keyword replacement, keyword extraction, fuzzy matching, and other similar tasks.

import re
import trrex as tx

pattern = tx.make(["baby", "bat", "bad"])
re.findall(pattern, "The baby was scared by the bad bat.")

Installation

First, obtain at least Python 3.6 and virtualenv if you do not already have them. Using a virtual environment is strongly recommended, since it will help you to avoid clutter in your system-wide libraries. Once the requirements are met, you can use pip:

pip install trrex

Examples

Here are some quick examples of what you can do with trrex.

To begin, import re and trrex:

import re
import trrex as tx

Search for any keyword

You can search for keywords by using re.search:

keywords = tx.make(["baby", "bad", "bat"])
match = re.search(keywords, "I saw a bat")

In this case we find bat the only keyword appearing in the text.

Replace a keyword

You can replace a keyword by using re.sub:

keywords = tx.make(["baby", "bad", "bat"])
replaced = re.sub(keywords, "bowl", "The bat is round")