Python编程：TinyDB库MongoBD的简易替代

TinyDB 是一个轻量级的文档数据库，操作类似MongoBD，其存储方式为Json

文档：https://tinydb.readthedocs.io/en/latest/index.html github：https://github.com/msiemens/tinydb

代码示例

# -*- coding: utf-8 -*-

from tinydb import TinyDB, Query

db = TinyDB('db.json')

student = db.table("student")

# 插入数据
student.insert({"name": "Tom", "age": 23})

# 插入多条
student.insert_multiple([
    {"name": "Jack", "age": 24},
    {"name": "mary", "age": 25}
])


# 查询所有
print(student.all())
[
  {'name': 'Tom', 'age': 23},
  {'name': 'Jack', 'age': 24},
  {'name': 'mary', 'age': 25}
]

# 查询部分
query = Query()
result = student.search(query.name == 'Tom')
print(result)
# [{'name': 'Tom', 'age': 23}]

result = student.search(query.age > 24)
print(result)
# [{'name': 'mary', 'age': 25}]

# 逻辑查询
db.search(~ (User.name == 'John'))  # Negate
db.search((User.name == 'John') & (User.age