python-basics-summary-tool

Simple CLI tool that summarizes a CSV.

What it does

• Loads a CSV
• Prints number of rows, columns, column names, dtypes, missing counts
• Saves the summary as JSON

Run locally

1. Ensure Python 3.8+ is installed.
2. (Optional) create venv: python -m venv .venv source .venv/bin/activate # mac/linux .venv\Scripts\activate # windows
3. Install pandas: pip install pandas
4. Run: python main.py path/to/file.csv --out report.json

Example: python main.py data/titanic.csv --out summary.json

Example

$ python main.py day1.csv --out summary.json

Produces summary.json like: { "n_rows": 891, "n_cols": 12, "columns": ["PassengerId","Survived", ...], "dtypes": {"PassengerId":"int64", "Survived":"int64", ...}, "missing_counts": {"Age":177, "Cabin":687, ...} }