#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
# 讨论钉钉免费群21745728 qq群144081101 567351477
# CreateDate: 2018-11-03
"""

# 定义变量
a=100 
print(a)

# 复制
a=1000
print(a)

# 连接
v1 = "Hello"
v2 = "World!"
print(v1 + ' ' + v2)

# 连接常见错误
url = 'https://china-testing.github.io/'
print(url + 9)