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  • [Head First Python]5. 推导数据:处理数据

    读取4个文件内容,格式化数据,升序,显示每个文件前3个数据

    julie.txt

    2.59,2.11,2:11,2:23,3-10,2-23,3:10,3.21,3-21

    james.txt

    2-34,3:21,2.34,2.45,3.01,2:01,2:01,3:10,2-22

    sarah.txt

    2:58,2.58,2:39,2-25,2-55,2:54,2.18,2:55,2:55

    mikey.txt

    2:22,3.01,3:01,3.02,3:02,3.02,3:22,2.49,2:38

    chapter5.py

     1 def get_coach_data(filename):
     2     try:
     3         with open(filename) as f:
     4             data = f.readline()
     5             return ( data.strip().split(','))
     6     except IOError as err:
     7         print('File err:' + str(err))
     8         return(None)
     9 
    10 def sanitize(time_string):
    11     if '-' in time_string:
    12         splitter = '-'
    13     elif ':' in time_string:
    14         splitter = ':'
    15     else:
    16         return(time_string)
    17 
    18     (mins, secs) = time_string.split(splitter)
    19     return(mins + '.' + secs)
    20 
    21 try:
    22     julie = get_coach_data('julie.txt')
    23     james = get_coach_data('james.txt')
    24     sarah = get_coach_data('sarah.txt')
    25     mikey = get_coach_data('mikey.txt')    
    26     
    27     print( sorted( set ([sanitize(s) for s in julie]) )[0:3] )
    28     print( sorted( set ([sanitize(s) for s in james]) )[0:3] )
    29     print( sorted( set ([sanitize(s) for s in sarah]) )[0:3] )
    30     print( sorted( set ([sanitize(s) for s in mikey]) )[0:3] )
    31     
    32 except IOError as err:
    33     print("file error" + str(err))

     

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  • 原文地址:https://www.cnblogs.com/galoishelley/p/3794710.html
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