python - How to merge and split numpy array along the axis? -

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i have data in following form shape of array 

   (10,4,4,3)

first want create array shape (merging, or flattening)

  (10,48)

such data (4,4,3) converted 1 row.

secondly want go original shape of data(splitting) such each element again placed @ same location.

thanks 

b = a.reshape(10,48) = b.reshape(10,4,4,3)

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