معالجة بيانات JSON

import json

# قاموس بايثون -> سلسلة JSON (تسلسل)
data = {
    "name": "Zhang San",
    "age": 25,
    "is_student": False,
    "scores": [85, 92, 78],
    "address": None
}

json_str = json.dumps(data, ensure_ascii=False, indent=2)
print(json_str)

{
  "name": "Zhang San",
  "age": 25,
  "is_student": false,
  "scores": [85, 92, 78],
  "address": null
}

import json

json_str = '{"name": "Zhang San", "age": 25, "is_student": false, "scores": [85, 92, 78]}'

data = json.loads(json_str)
print(data)                             # {'name': 'Zhang San', 'age': 25, ...}
print(type(data))                       # <class 'dict'>
print(data["name"])                     # Zhang San
print(data["scores"][0])                # 85

import json

# اكتب إلى ملف JSON
data = {
    "students": [
        {"name": "Zhang San", "age": 20, "score": 85},
        {"name": "Li Si", "age": 21, "score": 92},
        {"name": "Wang Wu", "age": 19, "score": 78}
    ]
}

with open("students.json", "w", encoding="utf-8") as f:
    json.dump(data, f, ensure_ascii=False, indent=2)

# اقرأ ملف JSON
with open("students.json", "r", encoding="utf-8") as f:
    loaded = json.load(f)

print(f"Number of students: {len(loaded['students'])}")
for s in loaded["students"]:
    print(f"  {s['name']}: {s['score']}")

import json
import os

DATA_FILE = "notes.json"

def load_notes():
    """حمّل الملاحظات من ملف JSON"""
    if not os.path.exists(DATA_FILE):
        return []
    with open(DATA_FILE, "r", encoding="utf-8") as f:
        return json.load(f)

def save_notes(notes):
    """احفظ الملاحظات إلى ملف JSON"""
    with open(DATA_FILE, "w", encoding="utf-8") as f:
        json.dump(notes, f, ensure_ascii=False, indent=2)

def add_note(title, content):
    """أضف ملاحظة"""
    notes = load_notes()
    notes.append({"title": title, "content": content})
    save_notes(notes)
    print(f"Note added: {title}")

def list_notes():
    """اعرض جميع الملاحظات"""
    notes = load_notes()
    if not notes:
        print("No notes yet")
        return
    for i, note in enumerate(notes, 1):
        print(f"{i}. {note['title']}")

add_note("Learning Python", "Learned the JSON module today")
add_note("Shopping List", "Buy milk, bread, eggs")
list_notes()

import json
from datetime import datetime

def custom_serializer(obj):
    """تسلسل مخصص — يتعامل مع أنواع مثل datetime"""
    if isinstance(obj, datetime):
        return obj.strftime("%Y-%m-%d %H:%M:%S")
    raise TypeError(f"Cannot serialize {type(obj)}")

data = {
    "name": "Zhang San",
    "created_at": datetime.now(),
    "active": True
}

json_str = json.dumps(data, default=custom_serializer, ensure_ascii=False, indent=2)
print(json_str)