Topic 6. Strings, f-strings and template strings, regular expressions

Goal: learn to process text with string methods and regular expressions, format tables with f-strings, distinguish text from bytes, validate Unicode input, and use Python 3.14 template strings with an explicit processor contract.

Lecture contents

1. Strings and Unicode — Strings and Unicode code points · Text-processing methods · Text, bytes, and normalization
2. f-strings and template strings — Formatting with f-strings · Python 3.14 template strings
3. Regular expressions — Regular expression syntax · Groups, flags, and the Match object · Searching, extracting, and transforming data
4. Program examples and common mistakes — Program examples · Limitations, checks, and common mistakes

Practice and review

• Practice — 3 worked examples with complete code and output
• Tasks — 30 variants, each with tasks at three difficulty levels
• Summary — conclusions, self-check questions, and useful links