python - 字符串列表或单个字符串中的命名元组之间的区别？

Question

这两个命名元组有什么区别:

Point = collections.namedtuple('Point','x,y')

和

Point = collections.namedtuple('Point',['x','y'])

对我来说，两者在功能上似乎是相同的(使用 python 3.8.0)

Answer 1

这两个命名元组确实是相同的:-)

>>> import collections
>>> Point1 = collections.namedtuple('Point','x,y')
>>> Point2 = collections.namedtuple('Point',['x','y'])
>>> Point1._fields
('x', 'y')
>>> Point2._fields
('x', 'y')

根据 namedtuple() docs :

The field_names are a sequence of strings such as ['x', 'y']. Alternatively, field_names can be a single string with each fieldname separated by whitespace and/or commas, for example 'x y' or 'x, y'.