python基础-day1 习题

  1 #!/usr/bin/env python
  2 #-*- encoding:utf-8 -*-
  3 #1、使用while循环输入 1 2 3 4 5 6 8 9 10
  4 Number = 1
  5 while Number < 11:
  6     if Number == 7:
  7         Number += 1
  8         continue#退出当前循环
  9     else:
 10         print(Number)
 11     Number += 1
 12 
 13 #2、求1-100的所有数的和
 14 Sum = 0
 15 n = 1
 16 while n < 101:
 17     Sum += n
 18     n +=1
 19 print(Sum)#如果放在代码块里就把所有的sum都打印出来了
 20 
 21 #3、输出 1-100 内的所有奇数
 22 # J_number = 1,3,5....
 23 # J_number => 1 % 2 ==1
 24 n =1
 25 while n < 101:
 26     if n % 2 ==1:
 27         print(n)
 28     n +=1
 29 
 30 # m =1
 31 # while m <101:
 32 #     print(m)
 33 #     m +=2
 34 #4、输出 1-100 内的所有偶数
 35 n =1
 36 while n < 101:
 37     if n % 2 ==0:
 38         print(n)
 39     n +=1
 40 
 41 #5、求1-2+3-4+5 ... 99的所有数的和
 42 #（1+3+5+....）-(2+4+6+....)
 43 Sum_j = 0
 44 Sum_o = 0
 45 Sum = 0
 46 n = 1
 47 while n <100:
 48     if n % 2 ==1:
 49         Sum_j += n
 50     elif n % 2 ==0:
 51         Sum_o +=n
 52     n +=1
 53 # print(Sum_j,Sum_o)
 54 Sum = Sum_j - Sum_o
 55 print(Sum)
 56 
 57 # m =1
 58 # sum1 =0
 59 # while m < 100:
 60 #     if m % 2 == 1:
 61 #         sum1 = sum1 + m
 62 #     else:
 63 #         sum1 = sum1 - m
 64 #     m +=1
 65 # print(sum1)
 66 
 67 #6、用户登陆（三次机会重试）
 68 
 69 # counts = 1
 70 # while counts < 4:
 71 #     user_name = input("please enter you name:")
 72 #     pass_word = input("please enter you password:")
 73 #     if user_name == 'sun'and pass_word == '123':
 74 #         print("welcome %s to our world" %user_name)
 75 #     else:
 76 #         print("your userName or passWorld is wrong,please try again!")
 77 #     counts +=1
 78 
 79 # counts = 1
 80 # while True:
 81 #     if counts <=3:
 82 #         user_name = input("please enter you name:")
 83 #         pass_word = input("please enter you password:")
 84 #         if user_name == 'sun'and pass_word == '123':
 85 #             print("welcome %s to our world" %user_name)
 86 #         else:
 87 #             print("your userName or passWorld is wrong,please try again!")
 88 #     else:
 89 #         print("you have try 3 times ,you username is lock ,please wait 2 hours try agin")
 90 #         break
 91 #     counts += 1
 92 
 93 counts =1
 94 while True:
 95     if counts <=2:
 96         user_name =str( input("type your username:"))
 97         pass_word = int(input("type your password:"))
 98         if user_name == 'sun' and pass_word == 123456:
 99             print("welcome……")
100         else:
101             print("try agin……")
102     elif counts == 3:
103         user_name = str(input("type your username:"))
104         pass_word = int(input("type your password:"))
105         if user_name == 'sun' and pass_word == 123456:
106             print("welcome……")
107         else:
108             print("you have try 3 times ,you username is lock ,please wait 2 hours try agin")
109             break
110     counts +=1