import abc

# For 2 and 3 compatibility
# https://stackoverflow.com/questions/35673474/
ABC = abc.ABCMeta('ABC', (object,), {'__slots__': ()})


class BaseOfficeFile(ABC):
    def __init__(self):
        pass

    @abc.abstractmethod
    def load_key(self):
        pass

    @abc.abstractmethod
    def decrypt(self):
        pass

import abc

# For 2 and 3 compatibility
# https://stackoverflow.com/questions/35673474/
ABC = abc.ABCMeta('ABC', (object,), {'__slots__': ()})


class BaseOfficeFile(ABC):
    def __init__(self):
        pass

    @abc.abstractmethod
    def load_key(self):
        pass

    @abc.abstractmethod
    def decrypt(self):
        pass

    @abc.abstractmethod
    def is_encrypted(self):
        pass

Add is_encrypted() to abstract methods
Add is_encrypted() to abstract methods

  import abc
  
  # For 2 and 3 compatibility
  # https://stackoverflow.com/questions/35673474/
  ABC = abc.ABCMeta('ABC', (object,), {'__slots__': ()})
  
  
  class BaseOfficeFile(ABC):
      def __init__(self):
          pass
  
      @abc.abstractmethod
      def load_key(self):
          pass
  
      @abc.abstractmethod
      def decrypt(self):
          pass
  
+     @abc.abstractmethod
+     def is_encrypted(self):
+         pass
+ 
Add is_encrypted() to abstract methods
## Code Before:
import abc

# For 2 and 3 compatibility
# https://stackoverflow.com/questions/35673474/
ABC = abc.ABCMeta('ABC', (object,), {'__slots__': ()})


class BaseOfficeFile(ABC):
    def __init__(self):
        pass

    @abc.abstractmethod
    def load_key(self):
        pass

    @abc.abstractmethod
    def decrypt(self):
        pass

## Instruction:
Add is_encrypted() to abstract methods
## Code After:
import abc

# For 2 and 3 compatibility
# https://stackoverflow.com/questions/35673474/
ABC = abc.ABCMeta('ABC', (object,), {'__slots__': ()})


class BaseOfficeFile(ABC):
    def __init__(self):
        pass

    @abc.abstractmethod
    def load_key(self):
        pass

    @abc.abstractmethod
    def decrypt(self):
        pass

    @abc.abstractmethod
    def is_encrypted(self):
        pass
