HelloPython/basicKnowledge/HelloWorld.py at master · tanglei168/HelloPython · GitHub

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#!/usr/bin/env python3

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

'''

Hello World

1.字母数字下划线组成，下划线连接

2.去除保留字和关键字

'''

__author__ = 'tzl'

print('Hello python')

print('你好，世界')

name = input('Please enter your name:')

# exit(-1)

print('hello',name)

print(name)

# 浮点数是近似值

print('0.1 + 0.2:',0.1 + 0.2)

# Ex1

width = input('Please input width:')

height = input('Please input height:')

print(int(width)*int(height))

# 总结：input(提示信息)

# 输出中文的时候要在字符串前面加u。

# 因为python中字符串默认采用ASCII，要声明为unicode就要加u(linux环境下不需要加u)

if __name__ == '__main__':

#最后执行

print('hello main')

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