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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 trcdep():
 """ Return the number of modules in the traceback representation. http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/trcdep_c.html :return: The number of modules in the traceback. :rtype: int """

    depth = ctypes.c_int()
    libspice.trcdep_c(ctypes.byref(depth))
    return depth.value