I asked this question over on the python-forum-io group but haven't gotten
much in the way of answers. I hope someone here can advise me.
I am trying to implement getters and setters in a class using a numpy array
as the base instance value, but I am not able to pass an array index
argument to the getter function (and probably not to the setter function,
but it never gets that far).
This is all happening on a Win10x64 system using python 3.8.5.
Please help me understand whether what I tried to code here is even
possible.
Peter
The code is as follows:
---- cut here ----
import numpy as np
class Matrix:
def __init__(self, msize):
self.msize = msize
self.mvalues = np.full([msize + 2, msize + 2, msize + 2], -1,
dtype=np.int32)
self.mvalues[1:-1, 1:-1, 1:-1] = 0
self.visited = np.zeros([msize + 2, msize + 2, msize + 2],
dtype=np.int32)
@property
def visits(self, coord):
return self.visited[coord[0], coord[1], coord[2]]
@visits.setter
def incr_visits(self, coord, incr):
self.visited[coord[0], coord[1], coord[2]] += incr
def Coord(x, y, z):
return np.full([3,], (x, y, z), dtype=np.int32)
mycoord = Coord(1, 2, 3)
print("mycoord={}".format(mycoord))
mygal = Matrix(10)
print("Before set:{}".format(mygal.visits(mycoord)))
mygal.incr_visits(mycoord, 10)
print("After set:{}".format(mygal.visits(mycoord)))
---- cut here ----
The output I get is as follows:
---- output ----
mycoord=[1 2 3]
Traceback (most recent call last):
File "C:\Users\MyUser\Test\clstest4.py", line 28, in <module>
print("Before set:{}".format(mygal.visits(mycoord)))
TypeError: visits() missing 1 required positional argument: 'coord'
---- output ----
--
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