python小程序

• 1-100求和　

1 def Sum(x, y): 2 return x+y 3 print reduce(lambda x,y:x+y,range(1,101)) 4 5 i = 1 6 j = 0 7 while i < 101: 8 j = i + j 9 i += 1 10 print j View Code

• ?輸出1-100之間的奇偶數

1 i = 1 2 a = [] 3 while i < 100: 4 if i%2 == 0: 5 a.append(i) 6 i += 1 7 print a View Code

• 計算1-2+3-4+5-6...99的和

1 i = 1 2 j = 0 3 k = 0 4 while i < 100: 5 if i%2 == 0: 6 j = i + j 7 if i%2 == 1: 8 k = i + k 9 i += 1 10 print k + (-j) 11 12 13 i = 0 14 j = 1 15 while j < 100: 16 temp = j%2 17 if temp == 1: 18 i = i + j 19 else: 20 i = i - j 21 j += 1 22 print i View Code

• 實現用戶登錄，超過3次自動退出

1 i = 0 2 name = "nihao" 3 psw = "12345" 4 while True: 5 if i == 3: 6 print "錯誤3次退出！" 7 break 8 else: 9 a = raw_input("請輸出賬號：").strip() 10 b = raw_input("請出入密碼：").strip() 11 if a == name and b == psw: 12 print "登錄成功！" 13 break 14 else: 15 print "賬號或密碼錯誤！\n" 16 i += 1 View Code

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轉載于:https://www.cnblogs.com/doupy/p/7159209.html

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