A Byte of Python

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  第91页

  Antigone (I'm THE asshole.)

  Homework exercise: Checking whether a text is a palindrome should also ignore punctuation, spaces and case.For example, "Rise to vote, sir." is also a palindrome but our current program doesn't say it is. Can you improve the above program to recognize this palindrome? 不会做..好丢脸 (更多)

  Homework exercise: Checking whether a text is a palindrome should also ignore punctuation, spaces and case.For example, "Rise to vote, sir." is also a palindrome but our current program doesn't say it is. Can you improve the above program to recognize this palindrome?

  不会做..好丢脸 (收起)

  2011-03-09 23:26:35   回应

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  第105页

  揸枪 (Never say die)

  在变量或者参数前加一个*前缀，代表它是一个元祖（tuple）； 在变量或者参数前加一个**前缀，代表它是一个字典（dictionary）。 (更多)

  在变量或者参数前加一个*前缀，代表它是一个元祖（tuple）；

  在变量或者参数前加一个**前缀，代表它是一个字典（dictionary）。 (收起)

  2011-08-14 20:21:30   回应

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  第80页

  揸枪 (Never say die)

  The Software Developement Process 1.What (Analysis) 2.How (Design) 3.Do It (Implementation) 4.Test (Testing and Debugging) 5.Use (Operation or Deployment) 6.Maintain (Refinement) Summary: Do the analysis and design. Start implementing with a simple version. Test and debug it. Use it to ensure that it works as expected. Add any features that you want and continue to repeat the Do It-Te... (更多)

  The Software Developement Process

  1.What (Analysis) 2.How (Design) 3.Do It (Implementation) 4.Test (Testing and Debugging) 5.Use (Operation or Deployment) 6.Maintain (Refinement)

  Summary: Do the analysis and design. Start implementing with a simple version. Test and debug it. Use it to ensure that it works as expected. Add any features that you want and continue to repeat the Do It-Test-Use cycle as many times as required.

  Remember, software is grown, not built.

  (收起)

  2011-08-14 14:34:06   回应

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  第25页

  揸枪 (Never say die)

  Getting Help Use help() to learn more about using help itself! example： 正则表达式：help('re') 全部都加上单引号，不然有些会出现语法错误。 (更多)

  Getting Help

  Use help() to learn more about using help itself!

  example：

  正则表达式：help('re')

  全部都加上单引号，不然有些会出现语法错误。 (收起)

  2011-08-13 15:59:29   回应

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  第29页

  揸枪 (Never say die)

  字符串格式化操作高级用法参考：http://www.python.org/dev/peps/pep-3101/ (更多)

  字符串格式化操作高级用法参考：http://www.python.org/dev/peps/pep-3101/ (收起)

  2011-08-13 16:46:36   回应

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  第49页

  Antigone (I'm THE asshole.)

  Important: Only those parameters which are at the end of the parameter list can be given default argument values i.e. you cannot have a parameter with a default argument value before a parameter without a default argument value in the order of parameters declared in the function parameter list. This is because the values are assigned to the parameters by position. For example, def func(a, b... (更多)

  Important: Only those parameters which are at the end of the parameter list can be given default argument values i.e. you cannot have a parameter with a default argument value before a parameter without a default argument value in the order of parameters declared in the function parameter list. This is because the values are assigned to the parameters by position. For example, def func(a, b=5) is valid, but def func(a=5, b) is not valid.

  求助此处何解? (收起)

  2011-02-27 11:10:24   5回应

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  第105页

  揸枪 (Never say die)

  在变量或者参数前加一个*前缀，代表它是一个元祖（tuple）； 在变量或者参数前加一个**前缀，代表它是一个字典（dictionary）。 (更多)

  在变量或者参数前加一个*前缀，代表它是一个元祖（tuple）；

  在变量或者参数前加一个**前缀，代表它是一个字典（dictionary）。 (收起)

  2011-08-14 20:21:30   回应

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  第80页

  揸枪 (Never say die)

  The Software Developement Process 1.What (Analysis) 2.How (Design) 3.Do It (Implementation) 4.Test (Testing and Debugging) 5.Use (Operation or Deployment) 6.Maintain (Refinement) Summary: Do the analysis and design. Start implementing with a simple version. Test and debug it. Use it to ensure that it works as expected. Add any features that you want and continue to repeat the Do It-Te... (更多)

  The Software Developement Process

  1.What (Analysis) 2.How (Design) 3.Do It (Implementation) 4.Test (Testing and Debugging) 5.Use (Operation or Deployment) 6.Maintain (Refinement)

  Summary: Do the analysis and design. Start implementing with a simple version. Test and debug it. Use it to ensure that it works as expected. Add any features that you want and continue to repeat the Do It-Test-Use cycle as many times as required.

  Remember, software is grown, not built.

  (收起)

  2011-08-14 14:34:06   回应

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  第70页

  揸枪 (Never say die)

  关于引用： 用 [:] 操作符来创建对象的副本，不要用等号 = (更多)

  关于引用：

  用 [:] 操作符来创建对象的副本，不要用等号 = (收起)

  2011-08-14 10:24:48   回应

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