對於python的10個小練習做下筆記

1.使用while迴圈輸入1 2 3 4 5 6 8 9 10。。。自己寫的程式碼如下：

num1 = 0
while num1 < 10:
    num1 = num1 +1
    if num1 == 7 :
        continue
    print(num1)
視訊教程：
n = 1
while n < 11:
    if n == 7:
        pass
    else:
        print(n)
    n = n +1　　

2.求1-100的所有數的和

num2 = 1
result 
 
= 0
while num2 <= 100:
    print(num2)
    result = result + num2
    num2 = num2+1
    print(result)
視訊教程：
n = 1
s = 0
while n < 101:
    s = s +n
    n = n+1
print(s)

3.輸出1-100內的所有的奇數

num3 = 1
while num3 <= 100:
    if num3 % 2 != 0:
        print(num3)
    num3 = num3 + 1
視訊教程：
NUM1 = 1
while
 
 NUM1< 101:
    temp = NUM1 % 2
    if temp == 0:
        pass
    else:
        print(NUM1)
    NUM1 = NUM1 +1

4.輸出1 -100 內的所有偶數

num4 = 1
while num4<=100:
    if num4 % 2 == 0:
        print(num4)
    num4 = num4 +1
視訊教程：
n = 1
while n < 101:
    temp = n % 2
    if temp ==0 :
        print(n)
    
 
else:
        pass
    n = n+1
print("END----------------")

5.求1-2+3-4+5...99的所有數的和

num5 = 1
result1 = 0
result2 = 0
while num5 < 100:
    if num5 % 2!=0:
        result1 = result1 + num5
    else:
        result1 = result1 - num5
    num5 =num5 +1
    print(result1)
視訊教程：
n = 1
s = 0
while n <100:
    temp = n % 2
    if temp == 0:
        s=s-n
    else:
        s = s+n
    print(s)

 6.要求使用者登入系統，只有3次機會

n = 3
n1 = 'xiaoming'
n2 = '123456'
while n > 0:
    name = input("請輸入使用者名稱：")
    Pass = input("請輸入密碼：")
    n = n-1
    if name == n1 and Pass ==n2:
        print("歡迎來到東京熱！")
        break
    elif name == n1 and Pass !=n2:
        print("您輸入的密碼錯誤，請重新輸入，您還有%d次機會"%n)
    else:
        print("請輸入正確的使用者名稱！您還有%d次機會"%n)