def __get_element(self, key):
        '''
        Fast extraction of the i,j element from the matrix
            This function is for private use only because is unsafe:
                1. Does not check on the value of key it expects key to be a integer tuple (i,j)
                2. Does not check bounds
        '''
        if key in self.__data:
            return self.__data[key]
        else:
            return self.ctx.zero
dataset/ETHPy150Open fredrik-johansson/mpmath/mpmath/matrices/matrices.py/_matrix.__get_element/original