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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def combine_and_copy(f, files, group):
 """ Combine the same column from multiple files and save to a third"""

    f[group] = np.concatenate([fi[group][:] if group in fi else \
                                   np.array([], dtype=np.uint32) for fi in files])