Static Code Analysis

• Ensure the following extensions are installed
  • pylint | flake8 | mypy
    
  • autopep8 | black formatter
    
• Refer Here for changes done to improve code quality

Property (oops)

• Refer Here
• Example

class Person:
    def __init__(self, name):
        self._name = name

    @property
    def name(self):
        return self._name

    @name.setter
    def name(self, value):
        if not isinstance(value, str):
            raise TypeError('Name must be a string')
        self._name = value

p = Person("test")
p.name = "hello"

Persistence

• To add persistence to our applications we have two approaches
  • unstructured:
    • data cannot be queried can only be searched
    • examples:
      • text
      • pdf
      • files
    • decision: file format
  • structured:
    • data can be queried
    • Examples:
      • databases
    • decision: database type

Findout What is the file format & when to use

• CSV File Format

number, name, course
1, abc, python
2, abd, DevOps
3, abe, GenAI

• JSON:

{
    "course": "Python",
    "students": [
        "abc", "bca"
    ],
    "address": {
       "flatno": 601,
       "building": "nigiri"
    }
}

• YAML

---
course: Python
students:
  - abc
  - bca
address:
  flatno: 601
  building: nilgiri

Reading and Writing files in Python

• Refer Here for python file handling
• Lets write a dictionary into json
• Refer Here for the examples done in the class