8.2. Operator Comparison
> (Greater than)
< (Less than)
== (Equal to)
!= (Not equal to)
>= (Greater than or equal to)
<= (Less than or equal to)
8.2.1. SetUp
>>> from dataclasses import dataclass
8.2.2. Example
obj == other
->obj.__eq__(other)
obj != other
->obj.__ne__(other)
obj < other
->obj.__lt__(other)
obj <= other
->obj.__le__(other)
obj > other
->obj.__gt__(other)
obj >= other
->obj.__ge__(other)
>>> @dataclass
... class Vector:
... x: int
... y: int
...
... def __eq__(self, other): ... # ==
... def __ne__(self, other): ... # !=
... def __lt__(self, other): ... # <
... def __le__(self, other): ... # <=
... def __gt__(self, other): ... # >
... def __ge__(self, other): ... # >=
8.2.3. Use Case 0x01
>>> import numpy as np
>>>
>>> a = np.array([[1, 2, 3],
... [4, 5, 6],
... [7, 8, 9]])
Equal:
>>> a == 5
array([[False, False, False],
[False, True, False],
[False, False, False]])
>>>
>>> a.__eq__(5)
array([[False, False, False],
[False, True, False],
[False, False, False]])
Not Equal:
>>> a != 5
array([[ True, True, True],
[ True, False, True],
[ True, True, True]])
>>>
>>> a.__ne__(5)
array([[ True, True, True],
[ True, False, True],
[ True, True, True]])
Less Than:
>>> a < 5
array([[ True, True, True],
[ True, False, False],
[False, False, False]])
>>>
>>> a.__lt__(5)
array([[ True, True, True],
[ True, False, False],
[False, False, False]])