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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 _init_usrgos(self, goids):
 """Return user GO IDs which have GO Terms."""

        usrgos = set()
        goids_missing = set()
        _go2obj = self.gosubdag.go2obj
        for goid in goids:
            if goid in _go2obj:
                usrgos.add(goid)
            else:
                goids_missing.add(goid)
        if goids_missing:
            print("MISSING GO IDs: {GOs}".format(GOs=goids_missing))
            print("{N} of {M} GO IDs ARE MISSING".format(N=len(goids_missing), M=len(goids)))
        return usrgos