This avoids the need for complex groups and prevents unintended overlaps. The skip() method in Pregex (from the Pregex class) allows you to define parts of the text that should be ignored during matching — effectively resetting the match position.
Example:
from pregex.core.pregex import Pregex from pregex.core.classes import AnyBut, AnyLetter from pregex.core.quantifiers import OneOrMore key = OneOrMore(AnyLetter()) value = OneOrMore(AnyBut('\n')) Safe reset: match key=value, then reset after newline pattern = key + "=" + value Apply with reset after each line matches = pattern.get_matches("name=John\nage=25\ncity=NYC") print(matches) # ['name=John', 'age=25', 'city=NYC'] pregex safe reset code
from pregex.core.classes import AnyUpperCaseLetter, AnyLowerCaseLetter, AnyDigit from pregex.core.quantifiers import AtLeast pattern = AnyUpperCaseLetter() + AtLeast(AnyLowerCaseLetter()) + AtLeast(AnyDigit()) 2. What is a "Safe Reset Code" in Pregex? A "safe reset code" is not a built-in Pregex function name. Instead, it refers to a design pattern where Pregex is used to generate regex that safely resets capturing groups, avoids catastrophic backtracking, and prevents runaway matches . This avoids the need for complex groups and
This is because it doesn’t capture the lookbehind content, avoiding group pollution and side effects. 4. Why “Safe”? Avoiding Common Regex Pitfalls Using Pregex for resetting helps avoid: What is a "Safe Reset Code" in Pregex
By leveraging Pregex’s readable and safe API, you can implement without the fragility of hand-crafted regex — that’s the essence of a “pregex safe reset code.”