Python练手例子（14）

#python3.7

if __name__ == '__main__':
    str1 = input('Input string:\n')
    str2 = input('Input string:\n')
    str3 = input('Input string:\n')
    print(str1, str2, str3)

    if str1 > str2 : str1, str2 = str2, str1
    if str1 > str3 : str1, str3 = str3, str1
    if str2 > str3 : str2, str3 = str3, str2

    print('After being sorted.')
    print(str1, str2, str3)

#!/usr/bin/python
#coding=utf-8

if __name__ == '__main__':
    i = 0
    j = 1
    x = 0
    while (i < 5) :
        x = 4 * j
        for i in range(0,5) :
            if(x%4 != 0) :
                break
            else :
                i += 1
            x = (x/4) * 5 +1
        j += 1
    print(x)

#!/usr/bin/python
#coding=utf-8

a = 809
for i in range(10, 100):#两位数10-99
    b = i * a #4位数1000-9999
    if b >= 1000 and b <= 10000 and 8 * i < 100 and 9 * i >= 100:
        print(b, ' = 800 * ', i, ' + 9 * ', i)

#!/usr/bin/python
#coding=utf-8

if __name__ == '__main__':
    n = 0
    p = input('Input a octal number:\n')
    for i in range(len(p)):
        n = n * 8 + ord(p[i]) - ord('0')
    print(n)

#!/usr/bin/python
#coding=utf-8

if __name__ == '__main__':
    sum = 4
    s = 4
    for j in range(2, 9):
        print(sum)
        if j <= 2:
            s *= 7
        else:
            s *= 8
        sum += s
    print('sum = %d' % sum)

#!/usr/bin/python
#coding=utf-8

link = ','
famlist = ['book', 'pencil', 'pen']
print(link.join(famlist))