如何提取特定符号前的常用词并找到特定词 [英] How to extract the common words before particular symbol and find particular word

问题描述

如果我有字典:

mydict = {"g18_84pp_2A_MVP1_GoodiesT0-HKJ-DFG_MIX-CMVP1_Y1000-MIX.txt" : 0,
          "g18_84pp_2A_MVP2_GoodiesT0-HKJ-DFG_MIX-CMVP2_Y1000-MIX.txt" : 1,
          "g18_84pp_2A_MVP3_GoodiesT0-HKJ-DFG_MIX-CMVP3_Y1000-MIX.txt" : 2,
          "g18_84pp_2A_MVP4_GoodiesT0-HKJ-DFG_MIX-CMVP4_Y1000-MIX.txt" : 3,
          "g18_84pp_2A_MVP5_GoodiesT0-HKJ-DFG_MIX-CMVP5_Y1000-MIX.txt" : 4,
          "g18_84pp_2A_MVP6_GoodiesT0-HKJ-DFG_MIX-CMVP6_Y1000-MIX.txt" : 5,
          "h18_84pp_3A_MVP1_GoodiesT1-HKJ-DFG-CMVP1_Y1000-FIX.txt" : 6,
          "g18_84pp_2A_MVP7_GoodiesT0-HKJ-DFG_MIX-CMVP7_Y1000-MIX.txt" : 7,
          "h18_84pp_3A_MVP2_GoodiesT1-HKJ-DFG-CMVP2_Y1000-FIX.txt" : 8,
          "h18_84pp_3A_MVP3_GoodiesT1-HKJ-DFG-CMVP3_Y1000-FIX.txt" : 9,
          "p18_84pp_2B_MVP1_GoodiesT2-HKJ-DFG-CMVP3_Y1000-FIX.txt" : 10}

1. 我想提取第一个 - 之前的公共部分 g18_84pp_2A_MVP_GoodiesT0.

我还想在第一组中找到特定单词 MIX 时添加一个 _MIX 以跟随 g18_84pp_2A_MVP_GoodiesT0 .假设我可以根据 myDict 中是 MIX 还是 FIX 来分类两组，然后是最终的输出字典:

also I want add a _MIX to follow g18_84pp_2A_MVP_GoodiesT0 when finding the particular word MIX in first group . Assume that I am able to classify two groups depending on whether is MIX or FIX in myDict, then the final Output dictionary:

OutputNameDict= {"g18_84pp_2A_MVP_GoodiesT0_MIX" : 0,
                  "h18_84pp_3A_MVP_GoodiesT1_FIX" : 1,
                  "p18_84pp_2B_MVP_FIX": 2}

有什么函数可以用来查找公共部分吗?如何在-等特定符号之前或之后提取单词并找到MIX或FIX等特定单词?

Is there any function I could use to find common part? How pick up the word before or after particular symbol like - and find particular words like MIX or FIX?

推荐答案

可以使用 split 获取公共部分:

You can use split to get the common part:

s = "g18_84pp_2A_MVP1_GoodiesT0-HKJ-DFG_MIX-CMVP1_Y1000-MIX.txt"
n = s.split('-')[0]

事实上，split 会给你一个由 '-' 分隔的每个标记的列表，所以 s.split('-') 收益:

In fact, split will give you a list of each token delimited by '-', so s.split('-') yields:

['g18_84pp_2A_MVP1_GoodiesT0', 'HKJ', 'DFG_MIX', 'CMVP1_Y1000', 'MIX.txt']

要查看MIX或FIX是否在字符串中，可以使用in:

To see if MIX or FIX is in a string, you can use in:

if 'MIX' in s:
    print "then MIX is in the string s"

如果要去掉'MVP'后面的数字，可以使用re模块:

If you want to get rid if the numbers after 'MVP', you can use re module:

import re
s = 'g18_84pp_2A_MVP1_GoodiesT0'
s = re.sub('MVP[0-9]*','MVP',s)

这是一个获取公共部分列表的示例函数:

Here is a sample function to get a list of the common parts:

def foo(mydict):
    return [re.sub('MVP[0-9]*', 'MVP', k.split('-')[0]) for k in mydict]

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