class PydubException(Exception):
    """
    Base class for any Pydub exception
    """


class TooManyMissingFrames(PydubException):
    pass


class InvalidDuration(PydubException):
    pass


class InvalidTag(PydubException):
    pass


class InvalidID3TagVersion(PydubException):
    pass


class CouldntDecodeError(PydubException):
    pass


class CouldntEncodeError(PydubException):
    pass


class MissingAudioParameter(PydubException):
    pass

class PydubException(Exception):
    """
    Base class for any Pydub exception
    """


class TooManyMissingFrames(PydubException):
    pass


class InvalidDuration(PydubException):
    pass


class InvalidTag(PydubException):
    pass


class InvalidID3TagVersion(PydubException):
    pass


class CouldntDecodeError(PydubException):
    pass

class CouldntEncodeError(PydubException):
    pass

class MissingAudioParameter(PydubException):
    pass

--- 
+++ 
@@ -23,8 +23,10 @@
 class CouldntDecodeError(PydubException):
     pass
 
+
 class CouldntEncodeError(PydubException):
     pass
 
+
 class MissingAudioParameter(PydubException):
     pass
Add blank lines to comply with PEP8
