Python反射与匿名函数映射哪个好？

使用反射进行对象的展示设置（性能和可读性都更好）

class Shift:
    show = 'output'

    def __init__(self, line=1, uph=450, eff=1, wt=10):
        self.uph = uph
        self.eff = eff
        self.wt = wt
        self.line = line

    @property
    def output(self):
        return self.uph * self.eff * self.wt

    def __repr__(self):
        return f'{getattr(self, self.show)}'

使用类字典存储匿名函数进行对象的展示设置

class Shift:
    show = 'output'
    attr_mapping = {
        'output': lambda self: self.output,
        'uph': lambda self: self.uph,
        'eff': lambda self: self.eff,
        'wt': lambda self: self.wt,
    }
    def __init__(self, line=1, uph=450, eff=1, wt=10):
        self.uph = uph
        self.eff = eff
        self.wt = wt
        self.line = line
    @property
    def output(self):
        return self.uph * self.eff * self.wt

    def __repr__(self):
        return f'{self.attr_mapping.get(self.show)(self)}'