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numpy.ma.all
ma.all(self, axis=None, out=None, keepdims=<no value>) = <numpy.ma.core._frommethod object>- 
    
Returns True if all elements evaluate to True.
The output array is masked where all the values along the given axis are masked: if the output would have been a scalar and that all the values are masked, then the output is
masked.Refer to
numpy.allfor full documentation.See also
numpy.ndarray.all- 
       
corresponding function for ndarrays
 numpy.all- 
       
equivalent function
 
Examples
>>> np.ma.array([1,2,3]).all() True >>> a = np.ma.array([1,2,3], mask=True) >>> (a.all() is np.ma.masked) True 
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 https://numpy.org/doc/1.20/reference/generated/numpy.ma.all.html