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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 getArc(prom, sig, mc, pos, zerolat):
 """ Returns the arc of direction between a promissor and a significator. Arguments are also the MC, the geoposition and zerolat to assume zero ecliptical latitudes. ZeroLat true => inZodiaco, false => inMundo """

    pRA, pDecl = prom.eqCoords(zerolat)
    sRa, sDecl = sig.eqCoords(zerolat)
    mcRa, mcDecl = mc.eqCoords()
    return arc(pRA, pDecl, sRa, sDecl, mcRa, pos.lat)