How to invert the elements of a boolean array in python ?

Examples of how to invert the elements of a boolean array in python using the numpy function invert()

>>> import numpy as np
>>> a = np.array((True,True,False,True,False))
>>> b = np.invert(a)
>>> b
array([False, False,  True, False,  True], dtype=bool)

Another example

>>> import numpy as np
>>> a = np.array((1,1,0,1,0), dtype=bool)
>>> b = np.invert(a)
>>> b
array([False, False,  True, False,  True], dtype=bool)

Note: can be used, for example, to mask an array (see How to mask an array using another array in python ?)

References