Unit Converter CLI

Project roadmap

1. 01

   Set up the project and argument parser

   ~1h

   Create a Python script and use argparse to accept a value, source unit, and target unit as command-line arguments.

2. 02

   Implement conversion functions

   ~2h

   Write functions for length, weight, and temperature conversions using dictionaries to map unit pairs to formulas.

3. 03

   Add input validation and error messages

   ~1.5h

   Handle unsupported units and non-numeric values gracefully with clear error messages instead of crashes.

4. 04

   Add an interactive mode

   ~1.5h

   Let the tool prompt the user for values in a loop when run without arguments, so it works both interactively and via flags.

5. 05

   Write tests and polish output formatting

   ~1.5h

   Add unit tests for each conversion type and format results with sensible rounding and unit labels.

Resources

• DocsPython Documentation