第12课 习题讲解

其他 2018-12-03 06:54:41 阅读次数: 0

 

Python 编程作业 02

请实现一个程序，实现如下需求点

1.程序开始的时候提示用户输入学生年龄信息 格式如下：

Jack Green ,   21  ;  Mike Mos, 9; 我们假设 用户输入 上面的信息，必定会遵守下面的规则： 学生信息之间用分号隔开（分号前后可能有不定数量的空格）， 每个学生信息里的 姓名和 年龄之间用 逗号隔开（逗号前后可能有不定数量的空格） 2. 程序随后将输入的学生信息分行显示，格式如下 Jack Green : 21; Mike Mos : 09; 学生的姓名要求左对齐，宽度为20， 年龄信息右对齐，宽度为2位，不足前面补零

#--------------------------------------------------------------------------------------------------------------------------------#

需求分析：

1、输入---input('')、返回的类型是---str

2、要求的输入格式：Jack Green， 21；  Mike Mos，9；

1）可以输入多个学生信息，用；隔开

2）单个学生的名字和年龄用逗号（，）隔开

3）逗号和分号的数量是一致的

4）空格的数量是不固定的

3、注意事项：如果用户不按格式输入：1、提示，格式错误；2、可以再次输入

4、输出格式：

Jack Green  :   21;

Mike Mos    :    09;

思路分解：

1、提示用户输入：input()

2、对输入的内容进行过滤（数据处理），做出相应的提示！

3、获取name  age；

while True:
    info = input('请输入学生的信息：名字， 年龄；')
    if ',' and ';' in info:
        if info.count(',') == info.count(';'):
            temp = info.split(';')
            for one in temp:
                if one != '' and  ',' in one:
                    name ,age = one.split(',')
                    name = name.strip() # 去空格
                    age = int(age.strip())  # 去空格  --年龄转换为int型
                    print('{:<20}:{:>2}'.format(name, age))
            break
        else:
            print('您输入的格式不对：，与；的数量不一致！')
    else:
        print('您输入的格式有误！')

# 执行结果
请输入学生的信息：名字， 年龄；tom, 21;
tom                 :21



伪代码
while True:   先定义个死循环，让用户能多次输入
    info = input('请按照格式输入你的姓名和年龄： 姓名, 年龄;')   按照格式在控制台输入姓名和年龄
        if ',' and ';' in info:  判断输入内容是否合法（是否包含','和';'）
            if info.count(',') == info.count(';')   进一步判断输入是否合法，逗号和分号是否成对出现，不然就不合法
                temp = info.split(';')   先按照分号进行初步分割
                for one in temp:     取列表里面的元素
                    if one != '' and ',' in one:  条件判断，如果列表里无空值并且有逗号，根据前面的条件，逗号和分号是成对出现，所以满足one里面同时包含逗号和分号（为什么用逗号，因为前面分号已经切割过了）
                        name, age = one.split(',')  # 使用逗号分隔
                        name = one.strip()  # 去掉元素两边的空格
                        age = int(one.strip())   # 去掉元素两边的空格，并且把年龄转换为int型
                        print('{:<20}:{:>02}'.format(name, age))  打印出结果
                break   如果for循环执行完毕则跳出循环     
            else:
                print('你输入的内容不合法--,和;的数量不一致')     如果逗号和分号的数量不一致，则报错    
        else:
            print('你输入的内容不合法，请重新输入！')           如果逗号和分号没有同时出现，则报错输入不合法

请再实现一个程序，实现如下需求点

1.下面的log变量记录了云服务器上 当天上传的文件信息
其中第一列是文件名，第二列是文件大小

请编写一个程序，统计出不同类型的 文件的大小总和
比如：
jpeg  9988999
json   324324
png   2423233
----------------------------------


log = ''' f20180111014341/i_51a7hC3W.jpeg 169472 FrITJxleSP7wUD-MWw-phL_KP6Eu 15156063244230469 image/jpeg 0 f20180111014341/j_R0Hpl4EG.json 1036 ForGzwzV3e-uR3_UzvppJs1VgfQG 15156064773253144 application/json 0 f20180111020739/i_0TDKs0rD.jpeg 169472 FrITJxleSP7wUD-MWw-phL_KP6Eu 15156076847077556 image/jpeg 0 f20180111020739/j_JFO6xiir.json 1040 FmUhTchdLOd7LBoE8OXzPLDKcW60 15156077904192983 application/json 0 f20180111090619/i_1BwNksbL.jpg 49634 FtXBGmipcDha-67WQgGQR5shEBu2 15156329458714950 image/jpeg 0 f20180111090619/i_3BKlsRaZ.jpg 30152 FoWfMSuqz4TEQl5FT-FY5wqu5NGf 15156330575626044 image/jpeg 0 f20180111090619/i_5XboXSKh.jpg 40238 Fl84WaBWThHovIBsQaNFoIaPZcWh 15156329453409855 image/jpeg 0 f20180111090619/i_6DiYSBKp.jpg 74017 FrYG3icChRmFGnWQK6rYxa88KuQI 15156329461803290 image/jpeg 0 f20180111090619/i_76zaF2IM.jpg 38437 Fui8g5OrJh0GQqZzT9wtepfq99lJ 15156334738356648 image/jpeg 0 f20180111090619/i_B6TFYjks.jpg 37953 FleWqlK2W1ZmEgAatAEcm1gpR0kC 15156329464034474 image/jpeg 0 f20180111090619/i_N9eITqj3.jpg 38437 Fui8g5OrJh0GQqZzT9wtepfq99lJ 15156330419595764 image/jpeg 0 f20180111090619/i_QTSNWmA6.jpg 37953 FleWqlK2W1ZmEgAatAEcm1gpR0kC 15156333104224056 image/jpeg 0 f20180111090619/i_XdHcAfh1.jpg 56479 FjLQIQ3GxSEHDfu6tRcMylK1MZ05 15156334227270309 image/jpeg 0 f20180111090619/i_Xyy723MU.jpg 50076 FsfZpQzqu084RUw5NPYW9-Yfam_R 15156334229987458 image/jpeg 0 f20180111090619/i_d8Go0EOv.jpg 30152 FoWfMSuqz4TEQl5FT-FY5wqu5NGf 15156334736228515 image/jpeg 0 f20180111090619/i_diuHmX53.jpg 40591 FuTx1pw4idbKnV5MSvNGxCA5L470 15156333878320713 image/jpeg 0 f20180111090619/i_qQKzheSH.jpg 55858 Fj0A3i8V7fzzOiPQFL79ao15hkN9 15156329456666591 image/jpeg 0 f20180111090619/i_rHL5SYk8.jpg 40238 Fl84WaBWThHovIBsQaNFoIaPZcWh 15156336509742181 image/jpeg 0 f20180111090619/i_xZmQxUbz.jpg 40238 Fl84WaBWThHovIBsQaNFoIaPZcWh 15156333240603466 image/jpeg 0 f20180111090619/i_zBDNgXDv.jpeg 73616 FlgNwq8lypgsxrWs_ksrS_x47SQV 15156334232887875 image/jpeg 0 f20180111090619/j_4mxbEiVh.json 2990 Fpq-3yl3Yr1CadNrJVSDnpeRhQtT 15156331445226898 application/json 0 f20180111090619/j_i1K74768.json 3042 Fl5PpDw1TsZXMuhoq1RUrOeGZ6br 15156335067090003 application/json 0 f20180111095839/i_Q7KMKeda.png 518522 Fl-yB1_ruL2uxZN9k7DjB62h9dYH 15156359599713253 image/png 0 f20180111095839/j_5DpqHolV.json 184 FoYvi7cmSrzuVjUgCRzW5kU95SVo 15156359719719064 application/json 0 f20180111100442/i_No8kToIV.jpg 48975 Fu1cw3f--5Vpz9kLGeJfvljhCtyZ 15156364349642377 image/jpeg 0 f20180111100442/i_P1bkvSeg.jpg 68200 FvYe8vi46TjUKhEy_UwDqLhO6ZsW 15156363800690634 image/jpeg 0 f20180111100442/i_T1AulKcD.jpg 52641 Fj2YzvdC1n_1sF93ZZgrhF3OzOeY 15156364021186365 image/jpeg 0 f20180111100442/i_X8d8BN07.jpg 50770 FivwidMiHbogw77lqgkIKrgmF3eA 15156363969737156 image/jpeg 0 f20180111100442/i_g0wtOsCX.jpg 76656 Fmtixx0mP9CAUTNosjLuYQHL6k0P 15156363448222155 image/jpeg 0 f20180111100442/i_h5OT9324.jpg 72672 FvbIqPLTh2cQHTIBv2akUfahZa_Z 15156364401354652 image/jpeg 0 f20180111100442/i_he8iLYI6.jpg 49399 FjeJvwjwhU-hKZsq66UoBg9_tEJs 15156363907932480 image/jpeg 0 f20180111100442/i_kg29t7Pp.jpg 76293 FuYj__sSeEN7AsXMbxO24Z8Suh8d 15156364156384686 image/jpeg 0 f20180111100442/i_oz1YoBI1.jpg 75620 FkY3xsUMwOI01zgoH1iXXgiQeq6I 15156364089112904 image/jpeg 0 f20180111100442/i_xrOT98on.jpg 50021 Fql7ookM1Rc6V7VairKAfnKe-o9w 15156363856357316 image/jpeg 0 f20180111135114/i_Zqt8Tmoe.png 161629 FlELw59_mV3VqDBLyu1BKN4fIWnx 15156500155209863 image/png 0 f20180111135114/j_uhHoMXKq.json 159 FrypljwAr2LgoLAePBNTUYTUAgDt 15156500200488238 application/json 0 f20180111142119/i_s83iZ2GR.png 92278 Fns8tdh3JCkRmfE_COYEu4o8w03E 15156517082371259 image/png 0 f20180111142119/j_0g45JRth.json 159 Fq1rFwdRguYRXrp61nGZ5TsUG1V- 15156517143375596 application/json 0 f20180111144306/i_yE5TC84E.png 139230 Fjf61ymabEnEvnr5ZMHFjXGCrYlP 15156530038824150 image/png 0 f20180111144306/j_OF4WVtSH.json 159 FqwkKcxfo8jd0jFUyuH4X2CrnE9q 15156530083419530 application/json 0 f20180111150230/i_KtnER4g3.png 120044 FuwOWdrqzcr2-UScem-LzEMgMezs 15156541734892258 image/png 0 f20180111150230/j_xMSUEejY.json 158 FjJr_4deMqFphGaptm-2Pa6wwRP2 15156541771989216 application/json 0 f20180111151741/i_JuSWztB3.jpg 92506 FrIjRevHSi6xv4-NQa2wrHu5a1zQ 15156550875370965 image/jpeg 0 f20180111153550/i_9wWzVenl.gif 769872 FvslKY9JUaCQm-lu02E34tvAP_oG 15156561674621628 image/gif 0 '''

需求分析：

1、处理一个log

2、把相同格式的文件，统计字节大小

3、要求的格式：

jpeg  9988999
json   324324
png   2423233

思路分析

1、获取每一行的日志信息的   文件 + 大小

1）可以使用print查看是否存在换行---\n

2、对相同格式文件进行累加

1）size获取的时候是str类型，累加要用int类型

2）创建一个函数，做累加。

print(log)  # 查看日志的输出格式。三引号里的内容都有换行

# 输出结果

f20180111014341/i_51a7hC3W.jpeg    169472    FrITJxleSP7wUD-MWw-phL_KP6Eu    15156063244230469    image/jpeg    0    
f20180111014341/j_R0Hpl4EG.json    1036    ForGzwzV3e-uR3_UzvppJs1VgfQG    15156064773253144    application/json    0    
f20180111020739/i_0TDKs0rD.jpeg    169472    FrITJxleSP7wUD-MWw-phL_KP6Eu    15156076847077556    image/jpeg    0    
f20180111020739/j_JFO6xiir.json    1040    FmUhTchdLOd7LBoE8OXzPLDKcW60    15156077904192983    application/json    0    
f20180111090619/i_1BwNksbL.jpg    49634    FtXBGmipcDha-67WQgGQR5shEBu2    15156329458714950    image/jpeg    0    
f20180111090619/i_3BKlsRaZ.jpg    30152    FoWfMSuqz4TEQl5FT-FY5wqu5NGf    15156330575626044    image/jpeg    0    
f20180111090619/i_5XboXSKh.jpg    40238    Fl84WaBWThHovIBsQaNFoIaPZcWh    15156329453409855    image/jpeg    0    
f20180111090619/i_6DiYSBKp.jpg    74017    FrYG3icChRmFGnWQK6rYxa88KuQI    15156329461803290    image/jpeg    0    
f20180111090619/i_76zaF2IM.jpg    38437    Fui8g5OrJh0GQqZzT9wtepfq99lJ    15156334738356648    image/jpeg    0    
f20180111090619/i_B6TFYjks.jpg    37953    FleWqlK2W1ZmEgAatAEcm1gpR0kC    15156329464034474    image/jpeg    0    
f20180111090619/i_N9eITqj3.jpg    38437    Fui8g5OrJh0GQqZzT9wtepfq99lJ    15156330419595764    image/jpeg    0    
f20180111090619/i_QTSNWmA6.jpg    37953    FleWqlK2W1ZmEgAatAEcm1gpR0kC    15156333104224056    image/jpeg    0    
f20180111090619/i_XdHcAfh1.jpg    56479    FjLQIQ3GxSEHDfu6tRcMylK1MZ05    15156334227270309    image/jpeg    0    
f20180111090619/i_Xyy723MU.jpg    50076    FsfZpQzqu084RUw5NPYW9-Yfam_R    15156334229987458    image/jpeg    0    
f20180111090619/i_d8Go0EOv.jpg    30152    FoWfMSuqz4TEQl5FT-FY5wqu5NGf    15156334736228515    image/jpeg    0    
f20180111090619/i_diuHmX53.jpg    40591    FuTx1pw4idbKnV5MSvNGxCA5L470    15156333878320713    image/jpeg    0    
f20180111090619/i_qQKzheSH.jpg    55858    Fj0A3i8V7fzzOiPQFL79ao15hkN9    15156329456666591    image/jpeg    0    
f20180111090619/i_rHL5SYk8.jpg    40238    Fl84WaBWThHovIBsQaNFoIaPZcWh    15156336509742181    image/jpeg    0    
f20180111090619/i_xZmQxUbz.jpg    40238    Fl84WaBWThHovIBsQaNFoIaPZcWh    15156333240603466    image/jpeg    0    
f20180111090619/i_zBDNgXDv.jpeg    73616    FlgNwq8lypgsxrWs_ksrS_x47SQV    15156334232887875    image/jpeg    0    
f20180111090619/j_4mxbEiVh.json    2990    Fpq-3yl3Yr1CadNrJVSDnpeRhQtT    15156331445226898    application/json    0    
f20180111090619/j_i1K74768.json    3042    Fl5PpDw1TsZXMuhoq1RUrOeGZ6br    15156335067090003    application/json    0    
f20180111095839/i_Q7KMKeda.png    518522    Fl-yB1_ruL2uxZN9k7DjB62h9dYH    15156359599713253    image/png    0    
f20180111095839/j_5DpqHolV.json    184    FoYvi7cmSrzuVjUgCRzW5kU95SVo    15156359719719064    application/json    0    
f20180111100442/i_No8kToIV.jpg    48975    Fu1cw3f--5Vpz9kLGeJfvljhCtyZ    15156364349642377    image/jpeg    0    
f20180111100442/i_P1bkvSeg.jpg    68200    FvYe8vi46TjUKhEy_UwDqLhO6ZsW    15156363800690634    image/jpeg    0    
f20180111100442/i_T1AulKcD.jpg    52641    Fj2YzvdC1n_1sF93ZZgrhF3OzOeY    15156364021186365    image/jpeg    0    
f20180111100442/i_X8d8BN07.jpg    50770    FivwidMiHbogw77lqgkIKrgmF3eA    15156363969737156    image/jpeg    0    
f20180111100442/i_g0wtOsCX.jpg    76656    Fmtixx0mP9CAUTNosjLuYQHL6k0P    15156363448222155    image/jpeg    0    
f20180111100442/i_h5OT9324.jpg    72672    FvbIqPLTh2cQHTIBv2akUfahZa_Z    15156364401354652    image/jpeg    0    
f20180111100442/i_he8iLYI6.jpg    49399    FjeJvwjwhU-hKZsq66UoBg9_tEJs    15156363907932480    image/jpeg    0    
f20180111100442/i_kg29t7Pp.jpg    76293    FuYj__sSeEN7AsXMbxO24Z8Suh8d    15156364156384686    image/jpeg    0    
f20180111100442/i_oz1YoBI1.jpg    75620    FkY3xsUMwOI01zgoH1iXXgiQeq6I    15156364089112904    image/jpeg    0    
f20180111100442/i_xrOT98on.jpg    50021    Fql7ookM1Rc6V7VairKAfnKe-o9w    15156363856357316    image/jpeg    0    
f20180111135114/i_Zqt8Tmoe.png    161629    FlELw59_mV3VqDBLyu1BKN4fIWnx    15156500155209863    image/png    0    
f20180111135114/j_uhHoMXKq.json    159    FrypljwAr2LgoLAePBNTUYTUAgDt    15156500200488238    application/json    0    
f20180111142119/i_s83iZ2GR.png    92278    Fns8tdh3JCkRmfE_COYEu4o8w03E    15156517082371259    image/png    0    
f20180111142119/j_0g45JRth.json    159    Fq1rFwdRguYRXrp61nGZ5TsUG1V-    15156517143375596    application/json    0    
f20180111144306/i_yE5TC84E.png    139230    Fjf61ymabEnEvnr5ZMHFjXGCrYlP    15156530038824150    image/png    0    
f20180111144306/j_OF4WVtSH.json    159    FqwkKcxfo8jd0jFUyuH4X2CrnE9q    15156530083419530    application/json    0    
f20180111150230/i_KtnER4g3.png    120044    FuwOWdrqzcr2-UScem-LzEMgMezs    15156541734892258    image/png    0    
f20180111150230/j_xMSUEejY.json    158    FjJr_4deMqFphGaptm-2Pa6wwRP2    15156541771989216    application/json    0    
f20180111151741/i_JuSWztB3.jpg    92506    FrIjRevHSi6xv4-NQa2wrHu5a1zQ    15156550875370965    image/jpeg    0    
f20180111153550/i_9wWzVenl.gif    769872    FvslKY9JUaCQm-lu02E34tvAP_oG    15156561674621628    image/gif    0

三引号里面的内容，用\n来切分，首尾都时空字符串

print(log.split('\n'))  # 使用\n来切分，发现首尾都是空字符串


#输出结果
['', 'f20180111014341/i_51a7hC3W.jpeg\t169472\tFrITJxleSP7wUD-MWw-phL_KP6Eu\t15156063244230469\timage/jpeg\t0\t', 'f20180111014341/j_R0Hpl4EG.json\t1036\tForGzwzV3e-uR3_UzvppJs1VgfQG\t15156064773253144\tapplication/json\t0\t', 'f20180111020739/i_0TDKs0rD.jpeg\t169472\tFrITJxleSP7wUD-MWw-phL_KP6Eu\t15156076847077556\timage/jpeg\t0\t', 'f20180111020739/j_JFO6xiir.json\t1040\tFmUhTchdLOd7LBoE8OXzPLDKcW60\t15156077904192983\tapplication/json\t0\t', 'f20180111090619/i_1BwNksbL.jpg\t49634\tFtXBGmipcDha-67WQgGQR5shEBu2\t15156329458714950\timage/jpeg\t0\t', 'f20180111090619/i_3BKlsRaZ.jpg\t30152\tFoWfMSuqz4TEQl5FT-FY5wqu5NGf\t15156330575626044\timage/jpeg\t0\t', 'f20180111090619/i_5XboXSKh.jpg\t40238\tFl84WaBWThHovIBsQaNFoIaPZcWh\t15156329453409855\timage/jpeg\t0\t', 'f20180111090619/i_6DiYSBKp.jpg\t74017\tFrYG3icChRmFGnWQK6rYxa88KuQI\t15156329461803290\timage/jpeg\t0\t', 'f20180111090619/i_76zaF2IM.jpg\t38437\tFui8g5OrJh0GQqZzT9wtepfq99lJ\t15156334738356648\timage/jpeg\t0\t', 'f20180111090619/i_B6TFYjks.jpg\t37953\tFleWqlK2W1ZmEgAatAEcm1gpR0kC\t15156329464034474\timage/jpeg\t0\t', 'f20180111090619/i_N9eITqj3.jpg\t38437\tFui8g5OrJh0GQqZzT9wtepfq99lJ\t15156330419595764\timage/jpeg\t0\t', 'f20180111090619/i_QTSNWmA6.jpg\t37953\tFleWqlK2W1ZmEgAatAEcm1gpR0kC\t15156333104224056\timage/jpeg\t0\t', 'f20180111090619/i_XdHcAfh1.jpg\t56479\tFjLQIQ3GxSEHDfu6tRcMylK1MZ05\t15156334227270309\timage/jpeg\t0\t', 'f20180111090619/i_Xyy723MU.jpg\t50076\tFsfZpQzqu084RUw5NPYW9-Yfam_R\t15156334229987458\timage/jpeg\t0\t', 'f20180111090619/i_d8Go0EOv.jpg\t30152\tFoWfMSuqz4TEQl5FT-FY5wqu5NGf\t15156334736228515\timage/jpeg\t0\t', 'f20180111090619/i_diuHmX53.jpg\t40591\tFuTx1pw4idbKnV5MSvNGxCA5L470\t15156333878320713\timage/jpeg\t0\t', 'f20180111090619/i_qQKzheSH.jpg\t55858\tFj0A3i8V7fzzOiPQFL79ao15hkN9\t15156329456666591\timage/jpeg\t0\t', 'f20180111090619/i_rHL5SYk8.jpg\t40238\tFl84WaBWThHovIBsQaNFoIaPZcWh\t15156336509742181\timage/jpeg\t0\t', 'f20180111090619/i_xZmQxUbz.jpg\t40238\tFl84WaBWThHovIBsQaNFoIaPZcWh\t15156333240603466\timage/jpeg\t0\t', 'f20180111090619/i_zBDNgXDv.jpeg\t73616\tFlgNwq8lypgsxrWs_ksrS_x47SQV\t15156334232887875\timage/jpeg\t0\t', 'f20180111090619/j_4mxbEiVh.json\t2990\tFpq-3yl3Yr1CadNrJVSDnpeRhQtT\t15156331445226898\tapplication/json\t0\t', 'f20180111090619/j_i1K74768.json\t3042\tFl5PpDw1TsZXMuhoq1RUrOeGZ6br\t15156335067090003\tapplication/json\t0\t', 'f20180111095839/i_Q7KMKeda.png\t518522\tFl-yB1_ruL2uxZN9k7DjB62h9dYH\t15156359599713253\timage/png\t0\t', 'f20180111095839/j_5DpqHolV.json\t184\tFoYvi7cmSrzuVjUgCRzW5kU95SVo\t15156359719719064\tapplication/json\t0\t', 'f20180111100442/i_No8kToIV.jpg\t48975\tFu1cw3f--5Vpz9kLGeJfvljhCtyZ\t15156364349642377\timage/jpeg\t0\t', 'f20180111100442/i_P1bkvSeg.jpg\t68200\tFvYe8vi46TjUKhEy_UwDqLhO6ZsW\t15156363800690634\timage/jpeg\t0\t', 'f20180111100442/i_T1AulKcD.jpg\t52641\tFj2YzvdC1n_1sF93ZZgrhF3OzOeY\t15156364021186365\timage/jpeg\t0\t', 'f20180111100442/i_X8d8BN07.jpg\t50770\tFivwidMiHbogw77lqgkIKrgmF3eA\t15156363969737156\timage/jpeg\t0\t', 'f20180111100442/i_g0wtOsCX.jpg\t76656\tFmtixx0mP9CAUTNosjLuYQHL6k0P\t15156363448222155\timage/jpeg\t0\t', 'f20180111100442/i_h5OT9324.jpg\t72672\tFvbIqPLTh2cQHTIBv2akUfahZa_Z\t15156364401354652\timage/jpeg\t0\t', 'f20180111100442/i_he8iLYI6.jpg\t49399\tFjeJvwjwhU-hKZsq66UoBg9_tEJs\t15156363907932480\timage/jpeg\t0\t', 'f20180111100442/i_kg29t7Pp.jpg\t76293\tFuYj__sSeEN7AsXMbxO24Z8Suh8d\t15156364156384686\timage/jpeg\t0\t', 'f20180111100442/i_oz1YoBI1.jpg\t75620\tFkY3xsUMwOI01zgoH1iXXgiQeq6I\t15156364089112904\timage/jpeg\t0\t', 'f20180111100442/i_xrOT98on.jpg\t50021\tFql7ookM1Rc6V7VairKAfnKe-o9w\t15156363856357316\timage/jpeg\t0\t', 'f20180111135114/i_Zqt8Tmoe.png\t161629\tFlELw59_mV3VqDBLyu1BKN4fIWnx\t15156500155209863\timage/png\t0\t', 'f20180111135114/j_uhHoMXKq.json\t159\tFrypljwAr2LgoLAePBNTUYTUAgDt\t15156500200488238\tapplication/json\t0\t', 'f20180111142119/i_s83iZ2GR.png\t92278\tFns8tdh3JCkRmfE_COYEu4o8w03E\t15156517082371259\timage/png\t0\t', 'f20180111142119/j_0g45JRth.json\t159\tFq1rFwdRguYRXrp61nGZ5TsUG1V-\t15156517143375596\tapplication/json\t0\t', 'f20180111144306/i_yE5TC84E.png\t139230\tFjf61ymabEnEvnr5ZMHFjXGCrYlP\t15156530038824150\timage/png\t0\t', 'f20180111144306/j_OF4WVtSH.json\t159\tFqwkKcxfo8jd0jFUyuH4X2CrnE9q\t15156530083419530\tapplication/json\t0\t', 'f20180111150230/i_KtnER4g3.png\t120044\tFuwOWdrqzcr2-UScem-LzEMgMezs\t15156541734892258\timage/png\t0\t', 'f20180111150230/j_xMSUEejY.json\t158\tFjJr_4deMqFphGaptm-2Pa6wwRP2\t15156541771989216\tapplication/json\t0\t', 'f20180111151741/i_JuSWztB3.jpg\t92506\tFrIjRevHSi6xv4-NQa2wrHu5a1zQ\t15156550875370965\timage/jpeg\t0\t', 'f20180111153550/i_9wWzVenl.gif\t769872\tFvslKY9JUaCQm-lu02E34tvAP_oG\t15156561674621628\timage/gif\t0\t', '']

代码如下

outList = []
def sizeAdd(fileType, fileSize): # 形参
    for one in outList:
        if fileType == one[0]:  # 说明有这个格式的文件
            one[1] += fileSize
            return
    outList.append([fileType,fileSize])




for line in log.split('\n'):
    if line != '':
        temp = line.split('\t')
        fileName = temp[0].strip().split('.')[1].strip()
        size = int(temp[1].strip()) # 文件大小
        sizeAdd(fileName, size)

print(outList)


# 执行结果

[['jpeg', 412560], ['json', 8927], ['jpg', 1374206], ['png', 1031703], ['gif', 769872]]

伪代码

outList = []  # 伪代码     结果存储为这样的格式：outList = [[gif, 20000], [png, 10000]]
def sizeAdd(fileType, fileSize): # 形参
    for one in outList:
        if fileType == one[0]:  # 如果列表中存在此文件格式
            one[1] += fileSize  # 则在文件大小在原来的基础上累加
            return   # 结束函数，为什么不用break。因为break是跳出本次循环；而return是结束函数执行
    outList.append([fileType, fileSize])    # outList,append()放在开头位置，意思是for循环里面如果成立，则不执行append(), 反之则执行


# print(log.split('\n'))
for line in log.split('\n'):   # 按照换行符来切割，得到整个每句内容
    if line != '':             # 假设条件，子句内容不为空
        temp = line.split('\t') # 定义temp,  按照制表符'\t'来切割
        fileName = temp[0].split('.')[1].strip()        # 定义文件名 fileName，按照.来切割，去掉两边空格
        size = int(temp[1].strip()) # 文件大小，去掉空格
        #print(fileName, size)

Python 作业 03

请定义一个函数 mySort，参数为一个列表，参数列表中的元素都是整数.
mySort 函数需要将参数列表中的元素按从小到大排序，最终返回一个新的list。

请按下面算法的思路实现函数：

1. 创建一个新的列表newList
2. 先找出所有元素中最小的，append在newList里面
3. 再找出剩余的所有元素中最小的，append在newList里面
4. 依次类推，直到所有的元素都放到newList里面

需求分析：

1、mySort  函数需要将列表中的元素按照从小到大排序，最终返回一个新的list。

1）def

2）return

newList = []  # 存结果
def mySort(inList):
    while len(inList) > 0:
        minData = inList[0]   # 假设法
        minIdx = 0
        indx = 0
        for one in inList:
           if minData > one:
               minData = one
               minIdx = indx

           indx += 1
        inList.pop(minIdx)  # pop()函数，括号里面填的是元素的下标
        newList.append(minData)

    return newList

print(mySort([16, 3, 12, 18, 5, 19]))

# 执行结果
[3, 5, 12, 16, 18, 19]

Python 作业 04

现有文件1（如下，请保存到文件file1.txt中）， 记录了公司员工的薪资，其内容格式如下

name: Jack   ;    salary:  12000
 name :Mike ; salary:  12300
name: Luk ;   salary:  10030
  name :Tim ;  salary:   9000
name: John ;    salary:  12000 name: Lisa ; salary: 11000 每个员工一行，记录了员工的姓名和薪资， 每行记录 原始文件中并不对齐，中间有或多或少的空格 现要求实现一个python程序，计算出所有员工的税后工资（薪资的90%）和扣税明细， 以如下格式存入新的文件 file2.txt中，如下所示 name: Jack ; salary: 12000 ; tax: 1200 ; income: 10800 name: Mike ; salary: 12300 ; tax: 1230 ; income: 11070 name: Luk ; salary: 10030 ; tax: 1003 ; income: 9027 name: Tim ; salary: 9000 ; tax: 900 ; income: 8100 name: John ; salary: 12000 ; tax: 1200 ; income: 10800 name: Lisa ; salary: 11000 ; tax: 1100 ; income: 9900 要求像上面一样的对齐 tax 表示扣税金额和 income表示实际收入。注意扣税金额和 实际收入要取整数

思路分析：

1、读取文件内容

2、获取name，salary

1）读取每一行数据：fo.read().splitlines()---去掉换行符

inFileDir = 'D://software/HelloWorld/songqin/python/lesson13-14 习题讲解/file1.txt'
outFileDir = 'D://software/HelloWorld/songqin/python/lesson13-14 习题讲解/file2.txt'

with open(inFileDir) as rFile, open(outFileDir, 'w') as wFile:
    for line in rFile.read().splitlines():
        if ';' in line:
            info = line.split(';')
            if ':'in info[0] and  ':'in info[1]:  # 这里的条件之前写成了if ':' and ':' in info:---这样的话所有条件都不成立
                name = info[0].split(':')[1].strip()
                salary = int(info[1].split(':')[1].strip())  # 遇到的错误，这里不定义int型，下一步会报错
                out = 'name:{:<8} ; salary:{:>8} ;   tax:{:>6} ; income:{:>8}\n'.format(name, salary, int(salary * 0.1), int(salary * 0.9))  # 这里要加上\n换行
                wFile.write(out)
        else:
            print('this line is error!\n')


执行结果
name:Jack     ; salary:   12000 ;   tax:  1200 ; income:   10800
name:Mike     ; salary:   12800 ;   tax:  1280 ; income:   11520
name:Luk      ; salary:   10030 ;   tax:  1003 ; income:    9027
name:Tim      ; salary:    9000 ;   tax:   900 ; income:    8100
name:John     ; salary:   12000 ;   tax:  1200 ; income:   10800
name:Lisa     ; salary:   11000 ;   tax:  1100 ; income:    9900

伪代码

伪代码：
1--定义两个文件名及文件路径
    inFileDir = '文件路径'
    outFileDie = '文件路径'
2-- 使用with open 可以省略close()
        with open(inFileDir, 'r'---默认为只读，可以省略) as rFile, open(outFileDir, 'w') as wFile:
              
3--读取每行数据，使用splitlines()可以去掉换行符
    for line in rFile.read().splitlines():
4--按照(; )进行切割，切割之前先进行条件判断，看line中是否有分号。如果有则执行下一步操作，否则提示错误
    if ';' in line:
        info = line.split(';')
5--再按照（:）进行切割，切割之前先进行条件判断。 salary要转成int型        
    if ':' in info[0] and ':' in info[1]:
        name = info[0].split(':')[1].strip()
        salary = int(info[1].split(':')[1].strip())
6--格式化，按照一定格式输出结果
    out = ‘name: {:>6};  salary: {:>8};   tax:{:>8};  income:{:>8}’.format(name, salary, int(salary * 0.1), int(salary * 0.9))
7--写入文件                   
    wflie.write(out)

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