本文實例講述了Python3.6簡單反射操作。分享給大家供大家參考,具體如下:
# -*- coding:utf-8 -*-#!python3# -----------------------# __Author : tyran# __Date : 17-11-13# -----------------------class Base: def __init__(self): self.name = 'aaa' self.age = 18 def show(self): print(self.age)# 通過getattr()找到對象的成員base = Base()v = getattr(base, 'name')print(v) # aaafunc1 = getattr(base, 'show')func1() # 18# 通過hasattr()查找成員是否存在print(hasattr(base, 'name')) # Trueprint(hasattr(base, 'name1')) # False# 通過setattr()給對象添加成員setattr(base, 'k1', 'v1')print(base.k1)delattr(base, 'k1') # v1# print(base.k1) 報錯AttributeError: 'Base' object has no attribute 'k1'# -------------------------------------------------------------------------# Class也是一個對象class ClassBase: sex = 'male' def __init__(self): self.name = 'aaa' self.age = 11 @staticmethod def show(): print('I am static') @classmethod def c_method(cls): print(cls.sex)sex_value = getattr(ClassBase, 'sex')print(sex_value)s_func = getattr(ClassBase, 'show')s_func()c_func = getattr(ClassBase, 'c_method')c_func()# 這些都沒問題setattr(ClassBase, 'has_girlfriend', True) # 添加靜態成員print(ClassBase.has_girlfriend) # True# ---------------同理,模塊也是對象-------------# 我新建了一個模塊s1.py,我把內容復制下來# class S1:# def __init__(self):# self.name = 'aaa'# self.age = 22## def show(self):# print(self.name)# print(self.age)### def func1():# print('page1')### def func2():# print('page2')# 一個類,兩函數import s1s1_class = getattr(s1, 'S1', None)if s1_class is not None: c1 = s1_class() c1.show() # aaa # 22getattr(s1, 'func1')() # page1f2 = 'func2'if hasattr(s1, f2): getattr(s1, 'func2')() # page2
注釋中說明的s1.py如下:
# -*- coding:utf-8 -*-#!python3class S1: def __init__(self): self.name = 'aaa' self.age = 22 def show(self): print(self.name) print(self.age)def func1(): print('page1')def func2(): print('page2')# 一個類,兩函數
程序運行結果:
更多關于Python相關內容感興趣的讀者可查看本站專題:《Python面向對象程序設計入門與進階教程》、《Python數據結構與算法教程》、《Python函數使用技巧總結》、《Python字符串操作技巧匯總》、《Python編碼操作技巧總結》及《Python入門與進階經典教程》
希望本文所述對大家Python程序設計有所幫助。
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