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Implementation of the Observer pattern for NumPy arrays

Project description

ndarray-listener

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Implementation of the Observer pattern for NumPy arrays.

Example

from numpy import array
from ndarray_listener import ndarray_listener as ndl

a = ndl(array([-0.5, 0.1, 1.1]))

class Observer(object):
  def __init__(self):
    self.called_me = False

  def __call__(self, _):
    self.called_me = True

o = Observer()
a.talk_to(o)
print(o.called_me)
a[0] = 1.2
print(o.called_me)

The output should be

False
True

Install

From command line, enter

pip install ndarray-listener

Running the tests

Install dependencies

pip install -U pytest pytest-pep8

then run

python -c "import ndarray_listener; ndarray_listener.test()"

Authors

License

This project is licensed under the MIT License.

Project details


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