String Slicing

Concepts covered: pySlicing

Slicing extracts a portion of a string using the syntax [start:end]. The slice includes the start index but excludes the end index. Slice Defaults Negative Slice Indices Negative indices work in slices too, making it easy to extract from the end: Slice Step A third parameter specifies the step (how many characters to skip):

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This section is part of the Strings: Intermediate lesson on DataDriven, a free data engineering interview prep platform. Each section includes explanations, worked examples, and hands-on code challenges that execute in real time. SQL queries run against a live PostgreSQL database. Python runs in a sandboxed Docker container. Data modeling problems validate against interactive schema canvases. All content is framed around what data engineering interviewers actually test at companies like Meta, Google, Amazon, Netflix, Stripe, and Databricks.

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