Searching in Strings

Concepts: pyStringMethods

Python provides several ways to search for substrings within a string. Each method has specific use cases. The in Operator The first returns True (@ is in the email). The second returns False (gmail is not). find() and index() This finds @ at position 4, then searches for . starting from position 4, finding it at position 12. The count() Method This returns 3 (three a's), 2 (two "na" occurrences), and 0 (no x's). startswith() and endswith() These methods check if a string begins or ends with a specific substring: These are commonly used for file type validation, URL checking, and prefix/suffix matching.