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Dev.to
6/23/2026
Python for Beginners — Part 7: Modules, Errors & Files

Python for Beginners — Part 7: Modules, Errors & Files

Short summary

Learn Python modules, file I/O, error handling, and regex in this beginner-friendly tutorial. Work through practical examples for reading/writing files, handling exceptions with try/except blocks, and using the standard library. This is Part 7 of a series transitioning from learning exercises to building real programs.

  • Master modules and imports from Python's standard library (math, datetime, json, re, os)
  • Handle files safely with context managers and read/write operations using practical examples
  • Catch and manage exceptions gracefully with try/except/else/finally blocks

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