按 Python 中字符串中的数字对列表开头包含数字的字符串列表进行排序

Question

I have a list of HTML files in my directory obtained using the glob and they have the pattern numb-filenames . I would like to sort the list by the numbers

The len of the string is 76. I could not copy all of it but here are a few of them:

['50-Rcompat.html',
 '51-tang.html',
 '52-rectgw.html',
 '53-wea.html',
 '54-PTect.html',
 '55-R+V Allg.html',
 '56-SafetyCa.html',
 '57-TEI.html',
 '58-TAS.html',
 '59-TrPr.html',
 '6-sde.html',
 '60-weac.html',
 '61-WKra.html',
 '62-KCV .html',
 '63-Wdenbu.html',
 '64-TGARA.html',
 '65-BiV.html',
 '66-BURG.html',
 '67-richI.html',
 '7-pril.html',
 '8-spario.html',
 '9-Weal.html']

Here is my attempt:

sorted(df, key=lambda x: re.findall("\d+",x))

Answer 1

sorted(data, key=lambda x: int(x.split('-')[0]))

We are splitting the string at '-' and fetching the first part which consists of number in string format - then casting it to int type and using it as a key to sort the list.

Answer 2

You can do

sorted(df, key=lambda x: int(x[:x.find('-')]))

That will sort you all the files base on the number in the beginning of the file name.
Output

['6-sde.html',
 '7-pril.html',
 '8-spario.html',
 '9-Weal.html',
 '50-Rcompat.html',
 '51-tang.html',
 '52-rectgw.html',
 '53-wea.html',
 '54-PTect.html',
 '55-R+V Allg.html',
 '56-SafetyCa.html',
 '57-TEI.html',
 '58-TAS.html',
 '59-TrPr.html',
 '60-weac.html',
 '61-WKra.html',
 '62-KCV .html',
 '63-Wdenbu.html',
 '64-TGARA.html',
 '65-BiV.html',
 '66-BURG.html',
 '67-richI.html']