Python 给定字符串的元组t，计算由t中包含该字符的所有字符串组成的元组@

我需要一个“一行”Python语句，它生成一个元组，其中只包含带“@”的字符串

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我的尝试：2行

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经过几次试用，我刚刚解决了这个问题：

tuple_1 = ('asdf@', 'asdf')

tuple_2 = ()

for elem in [item for item in tuple_1 if '@' in item]: tuple_2 = tuple_2 + (elem,)

print tuple_2

我希望这就是你需要的！我投票支持你，因为这让我想起了我在大学里的数学自学时代，这有点好玩

for string in tuple_1:                       
    if '@' in string: tuple_2 = (string)

Out: 
    tuple_2 = ('asdf@')

tuple_1 = ('asdf@', 'asdf')

tuple_2 = ()

for elem in [item for item in tuple_1 if '@' in item]: tuple_2 = tuple_2 + (elem,)

print tuple_2