x = cached_property(y) doesn't work properly

[VadimPushtaev]

from cached_property import cached_property


class A:
    def __init__(self, x):
        self._x = x

    def get_x_len(self):
        print('...')
        return len(self._x)

    x_len = cached_property(get_x_len)


a = A([1, 2, 3])
print(a.get_x_len())
print(a.x_len)
print(a.get_x_len())

This examples fails with TypeError: 'int' object is not callable. The problem is, cached_property replaces get_x_len with 3 while it actually semantically should replacing x_len with 3.

[roelzkie15]

I did a dirty workaround seems like it works if you do this:

x_len = cached_property(get_x_len).func

[VadimPushtaev]

I did a dirty workaround seems like it works if you do this:

x_len = cached_property(get_x_len).func

x_len should be a property, not a method.

[roelzkie15]

I did a dirty workaround seems like it works if you do this:

x_len = cached_property(get_x_len).func

x_len should be a property, not a method.

Hmmm i think you are right, the cached_property(get_x_len).func returned 3 instead of a property.