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pyswiftyregex

Introduction

Welcome to the documentation of PySwiftyRegex, a powerful regular expression library built for Python. This library provides a simple and intuitive interface for performing complex matching and search operations using regular expressions in Python. Whether you’re a beginner or an experienced developer, PySwiftyRegex makes it easy to work with regular expressions and extract patterns from strings.

Installation

To start using PySwiftyRegex in your Python projects, follow the steps below:

  1. Open the terminal or command prompt.
  2. Navigate to your project directory.
  3. Run the following command to install PySwiftyRegex using pip: 
    pip install pyswiftyregex
  4. Once installed, you can import the library in your Python scripts and start using it.

Basic Usage

Using PySwiftyRegex is straightforward and requires just a few steps:

  1. Import the PySwiftyRegex library into your Python script.
  2. Create an instance of the Regex class by passing your regular expression pattern as a parameter.
  3. Use various methods provided by the Regex class to perform matching or search operations on strings.

Regular Expressions Syntax

Regular expressions are powerful patterns used for matching and manipulating text. Understanding their syntax is crucial for effective usage. Here are some common syntax elements used in regular expressions:

  • Literal Characters: These characters match themselves exactly. For example, the pattern “apple” will match the word “apple” in the target string.
  • Metacharacters: These are special characters that have a special meaning in regular expressions. Examples include “.”, “*”, “+”, “?”, etc.
  • Character Classes: A character class represents a set of characters. It is enclosed within square brackets “[ ]” and matches any single character from the defined set. For example, the pattern “[aeiou]” matches any vowel.
  • Quantifiers: Quantifiers specify the number of occurrences of a preceding element to match. Examples include “*”, “+”, “?”, etc.
  • Anchors: Anchors are used to match the position of characters in a string. Examples include “^” for the start of a line and “$” for the end of a line.

Examples

Here are some examples that demonstrate the usage of PySwiftyRegex in various scenarios:

Example 1: Basic Matching

from pyswiftyregex import Regex

regex = Regex("apple")
result = regex.match("I have an apple.")

print(result)

The above example will output “True” as the pattern “apple” is present in the target string.

Example 2: Extracting Phone Numbers

from pyswiftyregex import Regex

regex = Regex(r"\(\d{3}\) \d{3}-\d{4}")
result = regex.search("Contact us at (123) 456-7890 for assistance.")

print(result.group())

The above example will output “(123) 456-7890” as it matches the pattern of a phone number in the target string.

Conclusion

Congratulations! You now have a good understanding of PySwiftyRegex and how to use it for regular expression operations in your Python projects. Feel free to explore the documentation further and experiment with different patterns to achieve desired results. For more information and examples, refer to the official PySwiftyRegex documentation and community resources.

Happy coding!