Python 데코레이터를 기반으로 클래스의 메서드를 장식합니다.

class Test(object):
 def __init__(self):
  pass
 def revive(self):
  print('revive from exception.')
  # do something to restore
 def read_value(self):
  print('here I will do something.')
  # do something.

class Test(object):
 def __init__(self):
  pass
 def revive(self):
  print('revive from exception.')
  # do something to restore
 def read_value(self):
  try:
   print('here I will do something.')
   # do something.
  except Exception as e:
   print(f'exception {e} raised, parse exception.')
   # do other thing.
   self.revive()

def catch_exception(origin_func):
 def wrapper(*args, **kwargs):
  try:
   u = origin_func(*args, **kwargs)
   return u
  except Exception:
   return 'an Exception raised.'
 return wrapper
class Test(object):
 def __init__(self):
  pass
 def revive(self):
  print('revive from exception.')
  # do something to restore
 @catch_exception
 def read_value(self):
  print('here I will do something.')
  # do something.

def catch_exception(origin_func):
 def wrapper(self, *args, **kwargs):
  try:
   u = origin_func(self, *args, **kwargs)
   return u
  except Exception:
   self.revive() #不用顾虑，直接调用原来的类的方法
   return 'an Exception raised.'
 return wrapper
class Test(object):
 def __init__(self):
  pass
 def revive(self):
  print('revive from exception.')
  # do something to restore
 @catch_exception
 def read_value(self):
  print('here I will do something.')
  # do something.