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）

 1 class Shift:
 2     show = 'output'
 3 
 4     def __init__(self, line=1, uph=450, eff=1, wt=10):
 5         self.uph = uph
 6         self.eff = eff
 7         self.wt = wt
 8         self.line = line
 9 
10     @property
11     def output(self):
12         return self.uph * self.eff * self.wt
13 
14     def __repr__(self):
15         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

 1 class Shift:
 2     show = 'output'
 3     attr_mapping = {
 4         'output': lambda self: self.output,
 5         'uph': lambda self: self.uph,
 6         'eff': lambda self: self.eff,
 7         'wt': lambda self: self.wt,
 8     }
 9     def __init__(self, line=1, uph=450, eff=1, wt=10):
10         self.uph = uph
11         self.eff = eff
12         self.wt = wt
13         self.line = line
14     @property
15     def output(self):
16         return self.uph * self.eff * self.wt
17 
18     def __repr__(self):
19         return f'{self.attr_mapping.get(self.show)(self)}'

 

posted @ 2025-03-13 09:38  小学生2021  阅读(7)  评论(0)    收藏  举报