Gather analysis result required by this analysis

def prepare(self, node):
        '''Gather analysis result required by this analysis'''
        if isinstance(node, ast.Module):
            self.ctx.module = node
        elif isinstance(node, ast.FunctionDef):
            self.ctx.function = node

        for D in self.deps:
            d = D()
            d.attach(self.passmanager, self.ctx)
            result = d.run(node)
            setattr(self, uncamel(D.__name__), result)