Big talk involves pattern Python implementation-appearance mode

Appearance mode (facade pattern): Provides a consistent interface for a set of interfaces in a subsystem that defines a high-level interface that makes the subsystem easier to use

Here is a demo of the appearance mode:

1 #!/usr/bin/env python2 #-*-coding:utf-8-*-3 4 __author__='Andy'5 """6 Liar design Mode7 design mode-appearance mode8 facade_pattern.py9 appearance mode (facade pattern): Provides a consistent interface for a set of interfaces in a subsystem that defines a high-level interface that makes the subsystem easier to useTen """ One #Appearance class A classFund (object): -  -     def __init__(self): theSelf.stocka =Stocka () -SELF.STOCKB =stockb () -Self.realty =Realty () -  +     defBuy (self): - self.stocka.buy () + self.stockb.buy () A self.realty.buy () at  -     defSell (self): - Self.stocka.sell () - Self.stockb.sell () - Self.realty.sell () -  in #investment stocks A class - classStocka (object): to  +     defBuy (self): -         Print 'buy Stocka' the  *     defSell (self): $         Print 'Sell Stocka'Panax Notoginseng #Investment Stocks Class B - classstockb (object): the  +     defBuy (self): A         Print 'buy stockb' the  +     defSell (self): -         Print 'Sell stockb' $  $ #investing in Real estate - classRealty (object): -  the     defBuy (self): -         Print 'buy Realty'Wuyi  the     defSell (self): -         Print 'Sell Realty' Wu  -  About  $ if __name__=="__main__": -  -fund =Fund () - fund.buy () AFund.sell ()

The design of the above class is as follows:

The Fund class needs to know the functionality of the subsystem classes so that the appropriate client requests are sent to the appropriate subsystem objects, making the subsystem easier to use

Andy
Source: http://www.cnblogs.com/onepiece-andy/
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Big talk involves pattern Python implementation-appearance mode