如何将熊猫系列的一维 numpy 数组转换为二维 numpy 数组

Question

a = np.zeros((100,6), dtype=np.int8)
a_np_list = [arr for arr in a]
ser = pd.Series(a_np_list)

if I convert the series with ser.values, it is not with shape (100,6) but (100,), how to convert can result to a (100,6) 2D array?

Answer 1

Use:

a = np.array(ser.tolist())