I want to store different data type in on numpy array,
b = np.array([['2024-03-22', 71.0, 'ceh'], ['2024-03-23', 63.0, 'abc']])and specific dtype likes:
[['datetime64[D]', 'float64', 'string'], ['datetime64[D]', 'float64', 'string']]how to define that?