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Python Regular Expressions (Regex) Search Methods This repository provides a collection of Python functions for performing various types of regular expression (regex) searches. The functions allow you to search, find, extract, substitute, and manipulate strings using regular expressions in a flexible way. Each function is self-contained and provides a specific regex operation to handle different search and pattern matching tasks.

Table of Contents Requirements Functions basic_search find_all_occurrences match_search find_all_matches split_by_pattern full_match_search extract_groups search_with_position substitute_pattern case_insensitive_search optional_pattern_search Usage Requirements Python 3.x or higher re module (comes built-in with Python) Functions

1. basic_search(text, pattern) Search for the first occurrence of a pattern in the given text.

Args:

text (str): The string in which to search for the pattern. pattern (str): The pattern to search for. Returns:

str: The matched pattern, or "No match found" if no match is found. 2. find_all_occurrences(text, pattern) Find all occurrences of a pattern in the given text.

Args:

text (str): The string in which to find the occurrences of the pattern. pattern (str): The pattern to search for. Returns:

list: A list of all matches found. 3. match_search(text, pattern) Check if the pattern matches at the start of the string.

Args:

text (str): The string to check for the pattern. pattern (str): The pattern to match at the start of the string. Returns:

str: The matched string, or "No match at the start" if the pattern doesn't match at the start. 4. find_all_matches(text, pattern) Find all non-overlapping matches of a pattern in the given text.

Args:

text (str): The string to search for all matches. pattern (str): The pattern to search for. Returns:

list: A list of all match groups found. 5. split_by_pattern(text, pattern) Split the text by occurrences of the pattern.

Args:

text (str): The string to split. pattern (str): The pattern by which to split the string. Returns:

list: A list of strings resulting from the split. 6. full_match_search(text, pattern) Check if the entire string matches the pattern.

Args:

text (str): The string to check for a full match. pattern (str): The pattern to match against the entire string. Returns:

str: The matched string, or "No full match" if the entire string does not match the pattern. 7. extract_groups(text, pattern) Extract captured groups from the text using the given pattern.

Args:

text (str): The string to extract groups from. pattern (str): The pattern with capture groups to extract. Returns:

tuple: A tuple of captured groups, or "No match" if no match is found. 8. search_with_position(text, pattern) Search for a pattern and return its position in the string.

Args:

text (str): The string to search for the pattern. pattern (str): The pattern to search for. Returns:

tuple: A tuple containing the start and end position of the match, or "No match" if no match is found. 9. substitute_pattern(text, pattern, replacement) Substitute the occurrences of a pattern with a replacement string.

Args:

text (str): The string in which to substitute the pattern. pattern (str): The pattern to find. replacement (str): The string to replace the pattern with. Returns:

str: The modified string with the pattern replaced by the replacement. 10. case_insensitive_search(text, pattern) Perform a case-insensitive search for a pattern in the text.

Args:

text (str): The string in which to search for the pattern. pattern (str): The pattern to search for. Returns:

str: The matched pattern, or "No match found" if no match is found. 11. optional_pattern_search(text, pattern) Search for an optional pattern in the string.

Args:

text (str): The string to search for the pattern. pattern (str): The pattern with optional parts to search for. Returns:

str: The matched pattern, or "No match found" if no match is found.