python学习笔记第一节

一、HelloWorld
#！/usr/bin/env python

#-*- coding:utf-8 -*-
print("HelloWorld!")

二、用户交互

#!/usr/bin/env python#_*_coding:utf-8_*_name =input("What is your name?")print("Hello "name )

importgetpass

# 将用户输入的内容赋值给 name 变量

pwd =getpass.getpass("请输入密码：")

# 打印输入的内容

print(pwd)

#!/usr/bin/env python# -*- coding: utf-8 -*-

name ="emily"print"i am %s "%name #输出: i am emily

a = 30
count = 0
while count <3:
    b = int(input("a:"))
    if a == b:
        print("yes")
        break
    elif a>b:
        print("small")
    else:
        print("big")
    count +=1
else:
    print ("you have tried too many times..fuck off")

for i in range(10):
        print('------',i)
        for j in range(10):
             print(j)
             if j>5:
                 break