Python学习_06 习题练习

Python学习_06 习题练习2018-04-031、输入一行字符，分别统计出其中英文字母、空格、数字和其他字符的个数
代码如下：#!/usr/bin/env python# -*- coding: utf-8 -*-# @Time    : 2018\4\10 0010 20:31# @Author  : xiexiaolong# @File    : 0410.py'''输入一行字符，分别统计出其中英文字母、空格、数字和其他字符的个数'''while 1:    strings = input("Please input a string(quit will be exit):")    alpha, dig, space, other = 0, 0, 0, 0    if strings.strip()=="quit":        exit(1)    for i in strings:        if i.isdigit():            dig += 1        elif i.isspace():            space += 1        elif i.isalpha():            alpha += 1        else:            other += 1    print("alpha = {0}".format(alpha))    print("dig = {0}".format(dig))    print("space = {0}".format(space))    print("other = {0}".format(other))结果：D:\python\venv\Scripts\python.exe D:/python/0410.pyPlease input a string(quit will be exit):1 2 3 4 !@#$ sfsssssff  dddddalpha = 14dig = 4space = 7other = 4Please input a string(quit will be exit):quit
Process finished with exit code 12、ABCD乘9等于DCBA 求A = ? B = ? C=? D=?
代码如下：#!/usr/bin/env python# -*- coding: utf-8 -*-# @Time    : 2018\4\10 0010 20:50# @Author  : xiexiaolong# @File    : 0410-2.py##ABCD乘9等于DCBA A = ? B = ? C=? D=?for A in range(1, 10):    for B in range(0, 10):        for C in range(0, 10):            for D in range(1, 10):                if ((1000*A + 100*B + 10*C +D)*9 == (1000*D + 100*C + 10* B +A)):                    print("A = {0}".format(A))                    print("B = {0}".format(B))                    print("C = {0}".format(C))                    print("D = {0}".format(D))                    print("{0}{1}{2}{3}*9={4}{5}{6}{7}".format(A,B,C,D,D,C,B,A))结果:D:\python\venv\Scripts\python.exe D:/py
4000
thon/0410-2.pyA = 1B = 0C = 8D = 91089*9=9801
Process finished with exit code 0
3、九宫格
代码如下：#!/usr/bin/env python# -*- coding: utf-8 -*-# @Time    : 2018\4\10 0010 21:04# @Author  : xiexiaolong# @File    : 0410-3.py'''九宫格                ---------------                | A | B | C |                | D | E | F |                | G | H | I |                ---------------所有的横竖斜线加起来等于15A : 1-9B : 1-9 除AC : 1-9 除A,BD : 1-9 除A,B,C'''number= list()for i in range(1,10):    number.append(i)print(number)count = 1for A in number:    a = number.copy()    a.remove(A)    for B in a:        b = a.copy()        b.remove(B)        for C in b:            c = b.copy()            c.remove(C)            for D in c:                d = c.copy()                d.remove(D)                for E in d:                    e = d.copy()                    e.remove(E)                    for F in e:                        f = e.copy()                        f.remove(F)                        for G in f:                            g = f.copy()                            g.remove(G)                            for H in g:                                h = g.copy()                                h.remove(H)                                for I in h:                                    if A+B+C ==D+E+F == G+H+I == A+D+G == B+E+H == C+F+I == A+E+I == C+E+G == 15:                                        print('''                                        第{9}种方法：                                        ---------------                                        | {0} | {1} | {2} |                                        | {3} | {4} | {5} |                                        | {6} | {7} | {8} |                                        ---------------                                        '''.format(A,B,C,D,E,F,G,H,I,count))                                        count += 1

结果如下：D:\python\venv\Scripts\python.exe D:/python/0410-3.py[1, 2, 3, 4, 5, 6, 7, 8, 9]
                                        第1种方法：                                        ---------------                                        | 2 | 7 | 6 |                                        | 9 | 5 | 1 |                                        | 4 | 3 | 8 |                                        ---------------                                        
                                        第2种方法：                                        ---------------                                        | 2 | 9 | 4 |                                        | 7 | 5 | 3 |                                        | 6 | 1 | 8 |                                        ---------------                                        
                                        第3种方法：                                        ---------------                                        | 4 | 3 | 8 |                                        | 9 | 5 | 1 |                                        | 2 | 7 | 6 |                                        ---------------                                        
                                        第4种方法：                                        ---------------                                        | 4 | 9 | 2 |                                        | 3 | 5 | 7 |                                        | 8 | 1 | 6 |                                        ---------------                                        
                                        第5种方法：                                        ---------------                                        | 6 | 1 | 8 |                                        | 7 | 5 | 3 |                                        | 2 | 9 | 4 |                                        ---------------                                        
                                        第6种方法：                                        ---------------                                        | 6 | 7 | 2 |                                        | 1 | 5 | 9 |                                        | 8 | 3 | 4 |                                        ---------------                                        
                                        第7种方法：                                        ---------------                                        | 8 | 1 | 6 |                                        | 3 | 5 | 7 |                                        | 4 | 9 | 2 |                                        ---------------                                        
                                        第8种方法：                                        ---------------                                        | 8 | 3 | 4 |                                        | 1 | 5 | 9 |                                        | 6 | 7 | 2 |                                        ---------------                                        
Process finished with exit code 0