```python
(.venv) C:\apps\mapFolding>py
Python 3.13.7 (tags/v3.13.7:bcee1c3, Aug 14 2025, 14:15:11) [MSC v.1944 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy
>>> aa = numpy.zeros((4,3))
>>> aa
array([[0., 0., 0.],
       [0., 0., 0.],
       [0., 0., 0.],
       [0., 0., 0.]])
>>> aa.fill(value=9)
Traceback (most recent call last):
  File "<python-input-3>", line 1, in <module>
    aa.fill(value=9)
    ~~~~~~~^^^^^^^^^
TypeError: ndarray.fill() takes no keyword arguments
>>> aa
array([[0., 0., 0.],
       [0., 0., 0.],
       [0., 0., 0.],
       [0., 0., 0.]])
>>> aa.fill(9)
>>> aa
array([[9., 9., 9.],
       [9., 9., 9.],
       [9., 9., 9.],
       [9., 9., 9.]])
>>> 
```