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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

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	
'''

参考答案，往下翻

















































































题1

inputStr = input('Please input student age info:')
studentInfo = inputStr.split(';')
for one in studentInfo:
    # check if it is valid input 
    if ',' not in one: 
        continue
        
    name,age = one.split(',')
    name = name.strip()
    age  = age.strip()
    
    #  check is age digit
    if not age.isdigit():
        continue
    
    age = int(age)

    print('%-20s :  %02d' % (name, age))
    # print('{:20} :  {:02}'.format(name, age))
    # print(f'{name:20} :  {age:02}')
题2

# 记录各种类型的文件的数量统计，存储格式如下
# [['jpg',4566],['json',4566]]
fileLenTable = []

# 根据文件类型找到记录对象,进行累加
def putRecordToTable(fileType,fileLen):
    for one in fileLenTable:
        if one[0] == fileType:
            one[1] += fileLen
            return

    # 没有找到,创建一个记录元素
    fileLenTable.append([fileType,fileLen])
    return


for line in log.split('\n'):
    if line.strip() == '':
        continue

    parts = line.split('\t')
    name,size = parts[:2]

    ext = name.split('.')[-1]

    putRecordToTable(ext,int(size))


print(fileLenTable)