如何根据特定表达式在子列表中保存字符串列表? [英] How to save a list of string in sublists according specific expression?

问题描述

我正在编写一个脚本来在子列表中保存读取路径.假设我有 400 个文件路径保存在一个列表中，每个路径都有特定的语法 Ci_whaterver.csv，然后在我的路径列表中我有这样的东西:

I'm doing a script to save a read path in sublist. Let's suppose I have 400 file paths saved in a list, every path has the specific syntax Ci_whaterver.csv, then in my pathlist I have something like this:

pathlist=[C1_01.csv,C1_02.csv,...,Cn_01.csv,Cn_02.csv] 

我想最终在这种情况下对 pathlistf 进行排序或排序:

I would like to have finally a pathlistf ordered or sort with this situation:

pathlistf=[[C1_01.csv,C1_02.csv,...],[C2_01.csv,C2_02.csv,...],...,[Cn_01.csv,Cn_02.csv,...]]

我不知道以这种方式重新排列路径.

I don't have idea to reorder the path to this way.

你好，我遇到了这个问题:我想问一些与过去的情况非常相似的问题，假设我有下一条路径:path=[case1_Qxxx_cap1_whatever.csv,case1_Qxxx_cap1_whatever2.csv,case1_Qxxx_cap1_whatever3.csv,....,case1_Qxxx_cap2_whatever.csv,case1_Qxxx_cap2_whatever2.csv,case1_Qxxx_cap2_whatever3.xxx_cap2_whatever3..,case2_Qxxx_cap2_whatever2.csv]

Hello again, i got this problem: I would like to ask something very similar to the past case, let suppose i have the next path: path=[case1_Qxxx_cap1_whatever.csv,case1_Qxxx_cap1_whatever2.csv,case1_Qxxx_cap1_whatever3.csv,....,case1_Qxxx_cap2_whatever.csv,case1_Qxxx_cap2_whatever2.csv,case1_Qxxx_cap2_whatever3.csv,case2_Qxxx_cap1_whatever.csv,case2_Qxxx_cap1_whatever2.csv,...,case2_Qxxx_cap2_whatever.csv,case2_Qxxx_cap2_whatever2.csv]

我想要这个:

pathf=[[[[case1_Qxxx_cap1_whatever.csv,case1_Qxxx_cap1_whatever2.csv,...],[case1_Qxxx_cap2_whatever.csv,Qxxx_cap2_whatever2.csv,...]],[[case2_Qxxx_cap1_whatever.csv,cap1_Qxxx2.csv,case2_Qxxx2.csv,...]..],[case2_Qxxx_cap2_whatever.csv,case2_Qxxx_cap2_whatever2.csv,...]]]

推荐答案

一种方法是创建一个 dictionary 并使用 Ci 部分作为键，以 Ci 开头的文件名列表将作为值.例如，取pathlist = ['C1_01.csv','C1_02.csv', 'C2_01.csv', 'C3_01.csv', 'C2_02.csv']，那么我们将创建一个将存储

One way will be to create a dictionary and use the part Ci as key and lists of file names starting with Ci will be the value. For example, take pathlist = ['C1_01.csv','C1_02.csv', 'C2_01.csv' , 'C3_01.csv', 'C2_02.csv'], then we will create a dictionary which will store

{'C1': ['C1_01.csv', 'C1_02.csv'], 'C2': ['C2_01.csv', 'C2_02.csv'], 'C3': ['C3_01.csv']}

代码如下:

pathlist = ['C1_01.csv','C1_02.csv', 'C2_01.csv' , 'C3_01.csv', 'C2_02.csv']
d = {}
for path in pathlist:
    if path[:2] not in d:
        d[path[:2]] = [path]
    else:
        d[path[:2]].append(path)
pathlistf = []
for key in d:
    pathlistf.append(d[key])
print(pathlistf)
# Output: [['C1_01.csv', 'C1_02.csv'], ['C3_01.csv'], ['C2_01.csv', 'C2_02.csv']]

希望这能解决问题.如有任何疑问，请随时提出.

Hope this solves the problem. Feel free to ask any doubt.

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