不区分大小写的两个列表的比较 [英] Case-insensitive comparison of two lists

问题描述

我有2个列表.第一个是list_A = ['Sasi', 'Babu', 'kuttapppan', 'mathayi']，第二个是list_B = ['Raman', 'Kesavan', 'sasi', 'unni', 'Kuttappan'].

I have 2 lists. The first is list_A = ['Sasi', 'Babu', 'kuttapppan', 'mathayi'] and my second list is list_B = ['Raman', 'Kesavan', 'sasi', 'unni', 'Kuttappan'].

我想比较这两个列表，并确定第二个列表中重复的值，而不管它以大写字母还是小写字母开头.我尝试了以下方法:

I want to compare these two lists and identify the values which are duplicated in the second list regardless of if it starts with a capital letter or a lowercase letter. I've tried the following method:

if not [name for name in list_A if name in list_B]:
     print name

但是它没有按预期工作.

But it is not working as expected.

推荐答案

#Might be better if we are dealing with huge lists.  

list_A = ['Sasi', 'Babu', 'kuttapppan', 'mathayi']
list_B = ['Raman', 'Kesavan', 'sasi', 'unni', 'Kuttappan'].

d = [x.lower() for x in list_A] # make dict of list with less elements  
for m in list_B:  # search against bigger list  
    if m.lower() in d: print(m)   

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