Python之反射練習

#

什麼是反射？可以用字串的方式去訪問物件的屬性
class
test():
_name = "
sss"
deffun(self):
return
"helloword
"t =test()
#print(hasattr(t,"_name")) #hasattr(obj,name)#檢視類裡面有沒有name屬性
#print(hasattr(t,"fun")) #true
if hasattr(t,"
_name"):
print(getattr(t,"
_name
")) #
sssif hasattr(t,"
fun"
): 
print(getattr(t,"
fun")()) #
helloword
ifnot hasattr(t,"
age"): #
如果屬性不存在
print("
沒有該屬性和方法，我來給設定乙個")
setattr(t,
"age
","18
") #
給t物件設定乙個預設值，預設age=18
print(getattr(t,"
age"))

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