Python Projects

• A python project can be used in two ways
  • executable: This is your application
    • cli
    • desktop application
    • When hosted on web:
      • website
      • web api
  • library: These are reusable assets. Libraries are from three sources
    • standard library: Available once we install python
    • community library: Refer Here
    • custom library: We creating a reusable

Packages in python

• A package in python is a folder with a file __init__.py. Name of the folder becomes package name
• sub folders become sub packages.
• Refer Here and create a new package.
• For creating packages we have standard structures (not mandatory)

your_library/
├── LICENSE
├── README.md
├── pyproject.toml
├── setup.cfg
├── setup.py                      # (optional; if using setuptools)
├── MANIFEST.in                   # (optional; include non-code files)
├── requirements.txt              # (optional; for dev dependencies)
│
├── src/
│   └── your_library/             # main package source code
│       ├── __init__.py
│       ├── core.py
│       ├── utils.py
│       └── ...
│
├── tests/                        # unit and integration tests
│   ├── __init__.py
│   ├── test_core.py
│   └── test_utils.py
│
├── docs/                         # documentation (optional)
│   ├── index.md
│   └── usage.md
│
├── examples/                     # example scripts (optional)
│   └── demo_usage.py
│
└── scripts/                      # CLI tools or helper scripts (optional)
    └── cli_entry.py

Library Management System

• Lets create a directory structure: Refer Here for the initial structure

• objects:

  • institution
  • librarian
  • faculty
  • student
  • book
  • dvd
  • magazine
  • loan (transaction)
  • policy
  • charges

• use-cases

• dataclasses

• Refer Here for changes