Python 编程题目三遍历文件类型，并统计每个类型的和_请编写一个程序统计不同文件类型的大小总和-优快云博客

本文链接：https://blog.youkuaiyun.com/u012941152/article/details/82020816

这篇博客探讨了如何使用Python编程遍历指定目录中的不同文件类型，并详细介绍了如何统计每种类型文件的数量。内容包括文件操作、文件路径处理和条件判断等基本技巧，适合Python初学者学习。

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要求：

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	
'''

fileLenTable = []
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)