[SOLVED] Alternative to class objects in Python

Alternative to class objects in Python

I have code like

class abc:
    def __init__(self):
        self.a = 0
        self.b = 0
        self.c = 0

I am making array of objects of this class as below:

objs = np.array([ abc() for x in range(10)])

Is there any data structure similar to classes which can hold values a, b, c as in class abc. Also I could make array of that data structure as done above in objs object.

Solution

If you're using Python 3.3+, you can use types.SimpleNamespace:

>>> import types
>>> types.SimpleNamespace(a=0, b=0, c=0)
namespace(a=0, b=0, c=0)

>>> obj = types.SimpleNamespace(a=0, b=0, c=0)
>>> obj.a
0
>>> obj.b
0
>>> obj.c
0

In lower version, use collections.namedtuple to make a custom type.

>>> from collections import namedtuple
>>>
>>> abc = namedtuple('abc', 'a b c')
>>> abc(a=0, b=0, c=0)
abc(a=0, b=0, c=0)

But it does not allow attribute setting unlike types.SimpleNamespace:

>>> obj = abc(a=0, b=0, c=0)
>>> obj.a
0
>>> obj.a = 1
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: can't set attribute