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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 seq_int_arr(seqs):
 """Convert list of ACGT strings to matix of 1-4 ints Args: seqs (list of str):
 nucleotide sequences with only 'ACGT' characters Returns: numpy.array of int: matrix of integers from 1 to 4 inclusive representing A, C, G, and T str: nucleotide sequence string """

    return np.array([[NT_TO_INT[c] for c in x.upper()] for x in seqs])