String Methods

Pandas provides the .str accessor for string operations on Series. These are vectorized and efficient.

Basic String Operations

Common string transformations:

String Searching

Find and filter by string content:

Splitting and Extracting

Split strings and extract parts:

String Replacement

Replace patterns in strings:

String Length and Padding

Work with string lengths:

Stripping Whitespace

Remove leading/trailing whitespace:

Exercise: Clean Names

Exercise: Extract Username

Key Points

• Access string methods via .str accessor
• str.upper(), str.lower(), str.title() for case
• str.contains(), str.startswith(), str.endswith() for searching
• str.split(expand=True) creates multiple columns
• str.replace() for substitutions
• str.strip() removes whitespace
• str.len() gets string lengths