File Handling JSON: Concept Notes

"""
Topic 06: File Handling & JSON - Concept Notes

1. Working with Files
   - open(filename, mode): Core function to open files.
   - Modes: &#x27;r' (read), 'w' (write), 'a' (append), 'x' (create), 'b' (binary).
   - Context Manager(with): Recommended way to open files(automatically closes them).

2. Reading/Writing
   - read(), readline(), readlines()
   - write(), writelines()

3. JSON Module
   - JavaScript Object Notation(JSON) is a lightweight data format.
   - json.dump(obj, file): Writes Python object to JSON file.
   - json.load(file): Reads JSON file into Python object.
   - json.dumps(): Converts object to JSON string.
   - json.loads(): Converts JSON string to Python object.
"""

__PH_1__
with open("test.txt", "w") as f:
    f.write("Hello, File Handling!\nLine 2\nLine 3")

__PH_2__
with open("test.txt", "r") as f:
    content = f.read()
    print("File Content:\n", content)

__PH_3__
import json

data = {
    "name": "Python Learner",
    "topics_covered": 6,
    "is_expert": False
}

__PH_4__
with open("data.json", "w") as jf:
    json.dump(data, jf, indent=4)

__PH_5__
with open("data.json", "r") as jf:
    parsed_data = json.load(jf)
    print(f"\nParsed JSON Name: {parsed_data[&#x27;name']}")