流沙的专栏

#streams.pyclass Processor: def __init__(self,reader,writer): self.reader = reader self.writer = writer def process(self): while 1: data = self.reader.readlin

lister1.pyclass ListInherited: def __str__(self): return '<Instance of %s,address %s:\n%s>'%( self.__class__.__name__, id(self), self.__attrnames()) d

lister.pyclass ListInstance: ''' Mix-in class that provides a formatted print() or str() of instances via inheritance of __str__,coded here;displays instance attrs only;self is the inst