Python3.6简单反射操作示例_Python

Python3.6简单反射操作示例

2021-03-05 00:15Tyran_U Python

这篇文章主要介绍了Python3.6简单反射操作,结合实例形式分析了Python3反射的概念、原理、相关操作技巧与注意事项,需要的朋友可以参考下

本文实例讲述了Python3.6简单反射操作。分享给大家供大家参考，具体如下：

									# -*- 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)

									# 通过getattr（）找到对象的成员

									base = Base()

									v = getattr(base, 'name')

									print(v) # aaa

									func1 = getattr(base, 'show')

									func1() # 18

									# 通过hasattr（）查找成员是否存在

									print(hasattr(base, 'name')) # True

									print(hasattr(base, 'name1')) # False

									# 通过setattr（）给对象添加成员

									setattr(base, 'k1', 'v1')

									print(base.k1)

									delattr(base, 'k1') # v1

									# print(base.k1) 报错AttributeError: 'Base' object has no attribute 'k1'

									# -------------------------------------------------------------------------

									# Class也是一个对象

									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()

									# 这些都没问题

									setattr(ClassBase, 'has_girlfriend', True) # 添加静态成员

									print(ClassBase.has_girlfriend) # True

									# ---------------同理，模块也是对象-------------

									# 我新建了一个模块s1.py，我把内容复制下来

									# 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')

									# 一个类，两函数

									import s1

									s1_class = getattr(s1, 'S1', None)

									if s1_class is not None:

									  c1 = s1_class()

									  c1.show()

									  # aaa

									  # 22

									getattr(s1, 'func1')() # page1

									f2 = 'func2'

									if hasattr(s1, f2):

									  getattr(s1, 'func2')() # page2

注释中说明的s1.py如下：

									# -*- coding:utf-8 -*-

									#!python3

									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')

									# 一个类，两函数