如何使用python group by检索不区分大小写的单词？

只需将

casefold

添加到字符串中

things=[("red",1),("red",2),("green",5),("green",10),("red",15)]
for key,value in groupby(things,lambda x:x[0]):
    for thi in value:
        if(b==key):
            print("things present in:",thi[1])

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请注意，从上面的代码中，如果我试图检索“red”或“red”，它应该为red显示相同的输出…请尽早帮助我！！只需将.lower（）（或upper）添加到b和键，您就不必再关心这个问题了@Dr Mouse Sir非常感谢！！成功了！！

things=[("red",1),("red",2),("green",5),("green",10),("red",15)]
for key,value in groupby(things,lambda x:x[0]):
    for thi in value:
        if b.casefold() == key.casefold():
            print("things present in: ", thi[1])