Thinking in Python - Design Patterns and Problem-Solving Techniques.pdf

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1、ThinkinginPythonDesignPatternsandProblem-SolvingTechniquesBruceEckelPresident,MindView,Inc.Pleasenotethatthisdocumentisinitsinitialform,andmuchremainstobedone.ContentsPreface5Introduction7TheY2Ksyndrome..............8Contextandcomposition....9AquickcourseinPythonforprogr

2、ammers11Pythonoverview.................11Built-incontainers........................12Functions......................................13Strings...........................................14Classes...........................................16Thepatternconcept23Whatisapattern

3、?.............23Patterntaxonomy..............25DesignStructures..............26Designprinciples...............27TheSingleton.....................29Classifyingpatterns...........34Thedevelopmentchallenge35Exercises............................362:UnitTesting36Writetestsfir

4、st..................38SimplePythontesting.......39Averysimpleframework..40Writingtests......................41White-box&black-boxtests44Runningtests.....................46Automaticallyexecutingtests48Exercises............................483:Buildingapplicationframeworks4

5、9Templatemethod..............49Exercises............................504:Frontingforanimplementation51Proxy..................................52State...................................53StateMachine.....................55Table-DrivenStateMachine62TheStateclass.............

6、.................64Conditionsfortransition..............65Transitionactions.........................65Thetable.......................................65Thebasicmachine........................66Simplevendingmachine..............67Testingthemachine......................71To

7、ols...................................71Exercises............................72X:Decorators:dynamictypeselection73Basicdecoratorstructure..74Acoffeeexample................74Classforeachcombination75Thedecoratorapproach....77Compromise.....................80Otherconsidera

8、tions.........83Exercises............................83Y:Iterators:decouplingalgorithmsfromcontainers84