Python 入門 之 反射

​ 反射主要是指程式可以訪問、檢測和修改它本身狀態或行為的一種能力（自省）。

<1> getattr() 獲取

<2> setattr() 設定

<3> hasattr() 判斷是否存在

<4> delattr() 刪除

class a:

def __init__(self,name):
self.name = name
def func(self):
print("is a func")
a = a("rimo")
a.func()
print(a.name)
a.func()

零基礎到專案實戰，7天學習上手做專案

class a:

def __init__(self,name):
self.name = name
def func(self):
print("is a func")
a = a("rimo")
print(hasattr(a,"name")) # 返回 true就是說明name這個屬性在物件a中存在
print(getattr(a,"name"))
f = getattr(a,"func")
f()setattr(a,"age",18)
print(a.__dict__)
delattr(a,"name")
print(a.__dict__)

class a:

def __init__(self,name):
self.name = name
def func(self):
print("is a func")
a = a("rimo")
print(hasattr(a,"name"))
f = getattr(a,"func")
f(11)

def func():

print("is func")
# 當前模組:
print(globals()["func"])
import sys
o = sys.modules[__name__] # 獲取當前模組名對應的物件
f = getattr(o,"func")
f()

import test       # 匯入模組

test.func()
o = globals()["test"]
getattr(o,"func")()

class blog:

def login(self):
print("is login")
def register(self):
print("is register")
def comment(self):
print("is comment")
def log(self):
print("is log")
def log_out(self):
print("is log_out")
b = blog()
func_dic = 
msg = """
1.登入
2.註冊
4.日誌
5.登出
"""choose = input(msg)
if choose in func_dic:
func_dic[choose]()

class blog:

def login(self):
print("is login")
def register(self):
print("is register")
def comment(self):
print("is comment")
def log(self):
print("is log")
def log_out(self):
print("is log_out")
b = blog()
msg = """
login
register
comment
loglog_out
"""while 1:
choose = input(msg)
if hasattr(b,choose):
getattr(b,choose)()
else:
print("請重新輸入!")

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