numpy.isnan()
numpy.isnan
-
numpy.isnan(x[, out]) = -
Test element-wise for NaN and return result as a boolean array.
Parameters: x : array_like
Input array.
Returns: y : ndarray or bool
For scalar input, the result is a new boolean with value True if the input is NaN; otherwise the value is False.
For array input, the result is a boolean array of the same dimensions as the input and the values are True if the corresponding element of the input is NaN; otherwise the values are False.