只是想知道是否有人可以帮助我。我需要检查成员是否等于3个不同的字符串。我已经尝试过use or，但是没有成功。代码是：
list = ["a", "b", "c", "d"]
for member in list:
if not member == "a" or not member == "b" or not member == "c":
print member
我只需要打印"d"。我只需要得到"d"。
您只需要一个in测试：
for member in list:
if member not in ('a', 'b', 'c'):
print member
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