def __call__(self, env):
<EOL>if self.op == '<STR_LIT:/>' and env.scope['<STR_LIT>']:<EOL><INDENT>self.func = op.truediv<EOL><DEDENT>left = self.lhs(env)<EOL>right = self.rhs(env)<EOL>return self.func(left, right)<EOL>
Recursively evaluate an expression in Python space.

        Parameters
        ----------
        env : Scope

        Returns
        -------
        object
            The result of an evaluated expression.