London | 25-SDC-July | Pezhman Azizi | Sprint 3 | Implement-shell-tools-with-Python

[Pezhman-Azizi]

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Changelist

Implement shell tools in Python:

Overview

This PR starts the Python implementation of shell tools by adding the cat command.
It is the first step in the implement-shell-tools-with-python branch, separate from the Node.js version.

Changes

Added cat/cat.py script.

Implemented functionality to:

Print file contents.

-n → number all lines.

-b → number only non-blank lines.

Handle multiple files and glob patterns (*.txt).

Added cat/sample-files/ directory with sample .txt files for testing.

Usage

Run from the project root:

python3 cat/cat.py cat/sample-files/1.txt
python3 cat/cat.py -n cat/sample-files/1.txt
python3 cat/cat.py -b cat/sample-files/3.txt
python3 cat/cat.py cat/sample-files/*.txt

Next Steps

Add Python implementations for ls and wc.

Questions

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[LonMcGregor]

Good start on this sprint's tasks, I notice like your node implementations you are doing all the argument parsing yourself. Did you know python has a library that can do this for you?