Head First Python 第2版 ―頭とからだで覚えるPythonの基本

import mysql.connector

 

class UseDatabase:

 

def __init__(self, config: dict) -> None:

self.configuration = config

 

def __enter__(self) -> 'cursor':

self.conn = mysql.connector.connect(**self.configuration)

self.cursor = self.conn.cursor()

return self.cursor

 

def __exit__(self, exc_type, exc_value, exc_trace) -> None:

self.conn.commit()

self.cursor.

close()

self.conn.close()

from flask import Flask, render_template, request, escape

from vsearch import search4letters

 

from DBcm import UseDatabase

 

app = Flask(__name__)

 

app.config['dbconfig'] = { 'host': '127.0.0.1',

'user': 'vsearch',

'password': 'vsearchpasswd',

'database': 'vsearchlogDB', }

 

def log_request(req: ...