twh233的算法blog

#类定义 class people: #定义基本属性 name = '' age = 0 #定义私有属性,私有属性在类外部无法直接进行访问 __weight = 0 #定义构造方法 def __init__(self,n,a,w): self.name = n self.age = a self

print(1.25.as_integer_ratio())#转换为分数，输出分子与分母 print(1.25.hex())#转换16进制 print(3.0.is_integer())#判断是否为整形

s = "abcdefg" print("s[2:5]=", s[2:5]) print("s[2:-2]=", s[2:-2]) print("s[:]=", s[:]) # s[2:5]= cde # s[2:-2]= cde # s[:]= abcdefg t1 = (1, 2, 3, 4) print(sum(t1)) print(len(t1)) print(max(t1)) # 10

#!/usr/bin/env python # -*- coding: utf-8 -*- # 2/10/16 base trans. wrote by srcdog on 20th, April, 2009 # ld elements in base 2, 10, 16. import os,sys # global definition # base = [0, 1, 2, 3, 4, 5

# file = open('out2.txt', 'r+') def main(): # file = open('in.txt', 'r+') # str = file.read() # file.close() case = 1 case = int(input()) for case in range(case): so

交互式用户输入： import getpass username = input("用户名:") #提示输入用户名 passwd = getpass.getpass("密码:") #提示输入密码 if username == 'jianghong' and passwd == 'password':#实际运用中，需要与数据库中的账户信息比较 print('登录成功') else: