#NEWLINE# def __init__( self , secret_key , expires_in = None , **kwargs ) : #NEWLINE# #INDENT# JSONWebSignatureSerializer . __init__ ( self , secret_key , ** kwargs ) #NEWLINE# if ( expires_in is None ) : #NEWLINE# #INDENT# expires_in = self . DEFAULT_EXPIRES_IN #NEWLINE# #UNINDENT# self . expires_in = expires_in