2014-01-22 28 views
1

我想创建一个namedtuple其中有27 field_names。虽然它有太多field_names我创建了一个名为sub的列表,其中有field_names的项目列表。 result是我参考namedtuple的实例。传递元素到指定元组

sub = [ 
    'MA9221', 'MC9211', 'MC9212', 'MC9213', 'MC9214', 
    'MC9215', 'MC9222', 'MC9223', 'MC9224', 'MC9225', 
    'MC9231', 'MC9232', 'MC9233', 'MC9234', 'MC9235', 
    'MC9241', 'MC9242', 'MC9243', 'MC9244', 'MC9251', 
    'MC9252', 'MC9273', 'MC9277', 'MC9283', 'MC9285'] 
result = namedtuple('result', ['rollno', 'name'] + sub) 

结果值:

rollno = 123123 
name = "Sam" 
sub_value = [ 
    1,0,0,0,0, 
    0,0,1,1,1, 
    1,1,1,0,0, 
    1,1,0,0,1, 
    1,1,1,0,1] 

现在,我不知道该怎么sub_value的元素传递给result(rollno, name, ...)

回答

3

此行实际上定义类型本身:

result = namedtuple('result', ['rollno', 'name'] + sub) 

创建一个实例,你现在需要调用result(...)

>>> result(rollno, name, *sub_value) 
result(rollno=123123, name='Sam', MA9221=1, MC9211=0, MC9212=0, MC9213=0, MC9214=0, MC9215=0, MC9222=0, MC9223=1, MC9224=1, MC9225=1, MC9231=1, MC9232=1, MC9233=1, MC9234=0, MC9235=0, MC9241=1, MC9242=1, MC9243=0, MC9244=0, MC9251=1, MC9252=1, MC9273=1, MC9277=1, MC9283=0, MC9285=1) 
+1

我认为他的问题是,他不知道如何啪 - 解压缩。无论如何。 – roippi

+0

@roippi +1 for splant-unpack – bkmagnetron