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Ongoing changes to symbolic.
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8 changed files with 77 additions and 166 deletions
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# Copyright (c) 2012, GPy authors (see AUTHORS.txt).
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# Licensed under the BSD 3-clause license (see LICENSE.txt)
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__updated__ = '2014-03-31'
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import numpy as np
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from parameter_core import Observable, Pickleable
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class ObsAr(np.ndarray, Pickleable, Observable):
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"""
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An ndarray which reports changes to its observers.
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The observers can add themselves with a callable, which
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will be called every time this array changes. The callable
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takes exactly one argument, which is this array itself.
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"""
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__array_priority__ = -1 # Never give back ObsAr
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def __new__(cls, input_array, *a, **kw):
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if not isinstance(input_array, ObsAr):
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obj = np.atleast_1d(np.require(input_array, dtype=np.float64, requirements=['W', 'C'])).view(cls)
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else: obj = input_array
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#cls.__name__ = "ObsAr" # because of fixed printing of `array` in np printing
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super(ObsAr, obj).__init__(*a, **kw)
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return obj
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def __array_finalize__(self, obj):
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# see InfoArray.__array_finalize__ for comments
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if obj is None: return
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self._observer_callables_ = getattr(obj, '_observer_callables_', None)
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def __array_wrap__(self, out_arr, context=None):
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return out_arr.view(np.ndarray)
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def copy(self):
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memo = {}
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memo[id(self)] = self
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return self.__deepcopy__(memo)
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def __deepcopy__(self, memo):
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s = self.__new__(self.__class__, input_array=self.view(np.ndarray).copy())
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memo[id(self)] = s
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import copy
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s.__dict__.update(copy.deepcopy(self.__dict__, memo))
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return s
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def __reduce__(self):
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func, args, state = super(ObsAr, self).__reduce__()
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return func, args, (state, Pickleable.__getstate__(self))
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def __setstate__(self, state):
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np.ndarray.__setstate__(self, state[0])
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Pickleable.__setstate__(self, state[1])
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def __setitem__(self, s, val):
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super(ObsAr, self).__setitem__(s, val)
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self.notify_observers()
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def __getslice__(self, start, stop):
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return self.__getitem__(slice(start, stop))
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def __setslice__(self, start, stop, val):
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return self.__setitem__(slice(start, stop), val)
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def __ilshift__(self, *args, **kwargs):
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r = np.ndarray.__ilshift__(self, *args, **kwargs)
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self.notify_observers()
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return r
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def __irshift__(self, *args, **kwargs):
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r = np.ndarray.__irshift__(self, *args, **kwargs)
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self.notify_observers()
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return r
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def __ixor__(self, *args, **kwargs):
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r = np.ndarray.__ixor__(self, *args, **kwargs)
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self.notify_observers()
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return r
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def __ipow__(self, *args, **kwargs):
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r = np.ndarray.__ipow__(self, *args, **kwargs)
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self.notify_observers()
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return r
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def __ifloordiv__(self, *args, **kwargs):
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r = np.ndarray.__ifloordiv__(self, *args, **kwargs)
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self.notify_observers()
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return r
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def __isub__(self, *args, **kwargs):
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r = np.ndarray.__isub__(self, *args, **kwargs)
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self.notify_observers()
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return r
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def __ior__(self, *args, **kwargs):
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r = np.ndarray.__ior__(self, *args, **kwargs)
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self.notify_observers()
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return r
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def __itruediv__(self, *args, **kwargs):
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r = np.ndarray.__itruediv__(self, *args, **kwargs)
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self.notify_observers()
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return r
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def __idiv__(self, *args, **kwargs):
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r = np.ndarray.__idiv__(self, *args, **kwargs)
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self.notify_observers()
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return r
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def __iand__(self, *args, **kwargs):
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r = np.ndarray.__iand__(self, *args, **kwargs)
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self.notify_observers()
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return r
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def __imod__(self, *args, **kwargs):
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r = np.ndarray.__imod__(self, *args, **kwargs)
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self.notify_observers()
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return r
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def __iadd__(self, *args, **kwargs):
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r = np.ndarray.__iadd__(self, *args, **kwargs)
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self.notify_observers()
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return r
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def __imul__(self, *args, **kwargs):
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r = np.ndarray.__imul__(self, *args, **kwargs)
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self.notify_observers()
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return r
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