Example Python program ledger_GUI+SQL_core_sqlite (1).py

Modules

• from sqlalchemy.ext.declarative import declarative_base
• import sqlite3
• from sqlalchemy import (Column, # 字段类型
• from sqlalchemy import create_engine
• from sqlalchemy.orm import sessionmaker
• import datetime
• import sqlite3

Classes

• class 完成的验收名单(ORM基类): # 定义映射类User，其继承上一步创建的Base
• class 经手现场名单(ORM基类): # 定义映射类User，其继承上一步创建的Base

Methods

• def repr(self):
• def repr(self):

• def add_one_data(会话, 表):

Code

Python example

from sqlalchemy.ext.declarative import declarative_base
import sqlite3
ORM基类 = declarative_base()
from sqlalchemy import (Column,  # 字段类型
                        Integer,  # 下面都是一样的 整型
                        VARCHAR)


class 完成的验收名单(ORM基类):  # 定义映射类User，其继承上一步创建的Base
    # 指定本类映射到users表
    __tablename__ = '完成的验收名单'
    # 指定id映射到id字段; id字段为整型，为主键
    ID = Column(Integer, primary_key=True)
    P_ID = Column(VARCHAR(12),unique=True)
    date = Column(VARCHAR(12))

    def __repr__(self):
        return f"<b1(ID='{self.ID}', P_ID='{self.P_ID}', date='{self.date}')>"

#
class 经手现场名单(ORM基类):  # 定义映射类User，其继承上一步创建的Base
    # 指定本类映射到users表
    __tablename__ = '经手现场名单'
    # 指定id映射到id字段; id字段为整型，为主键
    ID = Column(Integer, primary_key=True)
    P_ID = Column(VARCHAR(12))
    date = Column(VARCHAR(12))
    能否安装 = Column(VARCHAR(3))

    def __repr__(self):
        return f"<经手现场名单(ID='{self.ID}', P_ID='{self.P_ID}', " \
            f"date='{self.date}',能否安装='{self.能否安装}')>"

from sqlalchemy import create_engine
engine = create_engine('sqlite:///D:/01_日常规\台账/业务台账.sqlite3')
# engine是中创建的连接
from sqlalchemy.orm import sessionmaker
Session = sessionmaker(bind=engine)
# 创建Session类实例
session = Session()
# session.query(b1).all()
ORM基类.metadata.create_all(engine)

import datetime

# def add_one_data(会话, 表):
#     会话.add(表)
#     会话.commit()
#     会话.close()

if __name__ == '__main__':
    pass
    import sqlite3

    # 现场单 = 经手现场名单(P_ID='DF1900-S001',date="1900-01-02",能否安装='能')
    # # session.add(现场单)
    # session.commit()
    # session.close()

Useful Links

• Articles: https://python-commandments.org/
• Python shell: https://bsdnerds.org/learn-python/
• Tutorial: https://pythonprogramminglanguage.com/