去空值
x = ["a", "", "", "","b"]
x = [i for i in x if i]
print(x)
["a","b"]去重复
x = ["a", "", "", "","b"]
print(set(x))
{ '', 'a', 'b'}python3 数组去空值，去重
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x = ["a", "", "", "","b"]
x = [i for i in x if i]
print(x)
["a","b"]x = ["a", "", "", "","b"]
print(set(x))
{ '', 'a', 'b'}