应用：
class P:
def init(self,func):
self.func = func
def call(self,*args,**kwargs): #__call__是调用的意思
return ‘
’ + self.func(*args,**kwargs) + ‘
’@P
def get_text():
return ‘welcome’
def get_upper_text(text):
return text.upper()
if name ==‘main’:
print(get_text())
