'Convert arguments from symbolic to concrete form'

def convertArgs(self):

    assert (self.stage == FLAT)
    self.consts.insert(0, self.docstring)
    self.sort_cellvars()
    for i in range(len(self.insts)):
        t = self.insts[i]
        if (len(t) == 2):
            (opname, oparg) = t
            conv = self._converters.get(opname, None)
            if conv:
                self.insts[i] = (opname, conv(self, oparg))
    self.stage = CONV
