python - Removing random items from a list -


so have 10 txt files(named a_1,a_2........a_10), want randomly select 3 files out of these 10 in way, when 3 files randomly chosen, removed original list , new list can created using randomly chosen 3 files.i tried following method, when try command print(filelist), still shows 10 txt files,any suggestion or advice helpful.

import random filelist=[] in list(range(1,11)):     filelist.append("/users/hrihaan/desktop/a_%s.txt" %i) newlist=random.sample(filelist,4)

if order of elements in filelist don't matter you, can:

shuffle filelist take first n elements new_list, , reassign remaining elements filelist

in [48]: import random rn  in [49]: filelist = range(10)  in [50]: rn.shuffle(filelist)  in [51]: new_list = filelist[:3]  in [52]: filelist = filelist[3:]  in [53]: new_list out[53]: [3, 4, 5]  in [54]: filelist out[54]: [9, 8, 7, 6, 1, 2, 0]

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