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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 ident():
 """ This routine returns the 3x3 identity matrix. http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/ident_c.html :return: The 3x3 identity matrix. :rtype: 3x3-Element Array of floats """

    matrix = stypes.emptyDoubleMatrix()
    libspice.ident_c(matrix)
    return stypes.cMatrixToNumpy(matrix)