how to convert pandas series to 2d numpy array
a = np.array(s.values.tolist()) print (a) [[ 0. 0.] [ 0. 0.] [ 0. 0.] [ 0. 0.] [ 0. 0.]]
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python 2d array to dataframe
df = pd.DataFrame(numpy_array, columns=['digits', 'words'])
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