Everfighting

import asyncio
import asyncpg

async def run():
    conn = await asyncpg.connect(user='user', password='password',
                                 database='database', host='127.0.0.1')
    values = await conn.fetch('''SELECT * FROM mytable''')
    await conn.close()

loop = asyncio.get_event_loop()

Everfighting

list1 = ["这", "是", "一个", "测试"]
for index, item in enumerate(list1, 1):
    print index, item
    
#results
#1 这
#2 是
#3 一个
#4 测试
#修改了默认的起始位置

Everfighting

# -*- coding: utf-8 -*-
import pymysql

conn= pymysql.connect(host="localhost",user="root",passwd="admin",db="local_db",charset="utf8")
cursor = conn.cursor()
n = cursor.execute("select * from course")
for row in cursor.fetchall():
    for r in row:
        print (r)
print(n)

Everfighting

import itertools

for i in itertools.chain([1, 2, 3], ['a', 'b', 'c']):
    print(i,end=" ")
 
# 1 2 3 a b c 
    
    

Everfighting

pip install -i http://pypi.douban.com/simple/ packagename 
pip install -i http://pypi.tuna.tsinghua.edu.cn/simple packagename 

Everfighting

public class Operation
{
    private double _numberA = 0;
    private double _numberB = 0;
    
    public double NumberA
    {
        get { return _numberA; }
        set { _numberA = value; }
    }

Everfighting

class Operation:
    def GetResult(self):
        pass

class OperationAdd(Operation):
    def GetResult(self):
        return self.op1+self.op2


class OperationSub(Operation):

Everfighting

import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from email.mime.image import MIMEImage
from email.mime.application import MIMEApplication

#设置登录及服务器信息
mail_host = 'smtp.163.com'
mail_user = '' #账号
mail_pass = '' #密码(smtp服务器的密码)

Everfighting

#!/usr/bin/env python3
"""
email负责构造邮件
smtplib负责发送邮件
"""
from email.header import Header
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from email.utils import formatdate
import smtplib

Everfighting

import psycopg2
import json


def load_db_config():
    with open('../conf/db0.conf', "r") as f:
        config_json = json.loads(f.read())
        return config_json

config_json = load_db_config()