Qiita Teams that are logged in
You are not logged in to any team

Log in to Qiita Team
Community
OrganizationAdvent CalendarQiitadon (β)
Service
Qiita JobsQiita ZineQiita Blog
1
Help us understand the problem. What is going on with this article?
@natsu-re

些細なこと:Pythonでファイルのソートを行う

More than 1 year has passed since last update.

問題

以下のファイルが存在し、これらを先頭の数で並び替えたい。

$ ls -1 *pdb
10_apo_1RTC_aln_void.pdb
10_hol_1BR6_aln_void.pdb
11_apo_1RDW_aln_void.pdb
.
.
.

まず、Pythonでこれらのファイル名をglobモジュールを使用してリストに格納してみるが、以下に示すように順番がバラバラである。

import glob
file_names = glob.glob("*.pdb")
file_name

出力

['14_hol_2HVD_aln_void.pdb',
 '31_apo_1QLW_aln_void.pdb',
 '27_apo_2BF3_aln_void.pdb',
 '67_hol_3CFN_aln_void.pdb',
 '23_hol_1IMB_aln_void.pdb',
 '61_apo_1K3F_aln_void.pdb',
 '34_apo_3DXN_aln_void.pdb',
 '34_hol_3HZT_aln_void.pdb',
 '24_apo_2AX9_aln_void.pdb',
 '49_hol_1S9D_aln_void.pdb',
 '60_apo_1PKL_aln_void.pdb',
.
.
.

方針

ソート関数とキーオプションを使う。

key = lambda var: int(var.split("_")[0])
sorted(file_names, key = key)

出力は以下のようになる

['1_hol_2IUZ_aln_void.pdb',
 '1_apo_3CHE_aln_void.pdb',
 '2_hol_1YV3_aln_void.pdb',
 '2_apo_2AKA_aln_void.pdb',
 '3_hol_2JDS_aln_void.pdb',
 '3_apo_2GFC_aln_void.pdb',
 '4_hol_1LIC_aln_void.pdb',
 '4_apo_1ALB_aln_void.pdb',
 '5_apo_1NEP_aln_void.pdb',
 '5_hol_2HKA_aln_void.pdb',

ちゃんと思ったとうりに並び替えることができた。

1
Help us understand the problem. What is going on with this article?
Why not register and get more from Qiita?
  1. We will deliver articles that match you
    By following users and tags, you can catch up information on technical fields that you are interested in as a whole
  2. you can read useful information later efficiently
    By "stocking" the articles you like, you can search right away

Comments

No comments
Sign up for free and join this conversation.
Sign Up
If you already have a Qiita account Login
1
Help us understand the problem. What is going on with this article?