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  * subject [CPyUG:61885] [https://groups.google.com/group/python-cn/browse_thread/thread/5658c99025660056 10 個所有人都會想問的關於 Python 語言的問題]   * subject [CPyUG:61885] [[https://groups.google.com/group/python-cn/browse_thread/thread/5658c99025660056|10 個所有人都會想問的關於 Python 語言的問題]]
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  * [http://wiki.python.org/moin/Why_is_Python_a_dynamic_language_and_also_a_strongly_typed_language Why is Python a dynamic language and also a strongly typed language]?
  * [wiki:/WhyPyDynamicAndStronglyTyped 中文回答]		   * [[http://wiki.python.org/moin/Why_is_Python_a_dynamic_language_and_also_a_strongly_typed_language|Why is Python a dynamic language and also a strongly typed language]]?
  * [[/WhyPyDynamicAndStronglyTyped|中文回答]]
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  * [http://wiki.python.org/moin/Which_IDE_is_good_for_Python Which IDE is good for Python]?
  * [wiki:/WhichBestIdeForPython 中文回答]		   * [[http://wiki.python.org/moin/Which_IDE_is_good_for_Python|Which IDE is good for Python]]?
  * [[/WhichBestIdeForPython|中文回答]]
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  * [http://wiki.python.org/moin/Any_good_Python_book%3F Any_good_Python_book Any good Python book?]
  * [wiki:/WhereGoodPythonBook 中文回答]		   * [[http://wiki.python.org/moin/Any_good_Python_book%3F|Any_good_Python_book Any good Python book?]]
  * [[/WhereGoodPythonBook|中文回答]]
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  * [http://wiki.python.org/moin/Can_I_get_a_job_with_python%3F Can I get a job with python?]
  * [wiki:/CanGetPythonJob 中文回答]		   * [[http://wiki.python.org/moin/Can_I_get_a_job_with_python%3F|Can I get a job with python?]]
  * [[/CanGetPythonJob|中文回答]]
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  * [http://wiki.python.org/moin/Why_separate_sections_by_indentation_instead_of_by_brackets_or_%27end%27 Why separate sections by indentation instead of by brackets or 'end']
  * [wiki:/WhySectionsByIndentation 中文回答]		   * [[http://wiki.python.org/moin/Why_separate_sections_by_indentation_instead_of_by_brackets_or_%27end%27|Why separate sections by indentation instead of by brackets or 'end']]
  * [[/WhySectionsByIndentation|中文回答]]
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  * [http://wiki.python.org/moin/Which_GUI_is_best_for_python%3F Which GUI is best for python?]
  * [wiki:/WhichBestGuiForpython 中文回答]		   * [[http://wiki.python.org/moin/Which_GUI_is_best_for_python%3F|Which GUI is best for python?]]
  * [[/WhichBestGuiForpython|中文回答]]
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  * [http://wiki.python.org/moin/Why_is_Python_slower_than_the_xxx_language Why is Python slower than the xxx language]?
  * [wiki:/WhyPythonSlowerThanxxxLanguage 中文回答]		   * [[http://wiki.python.org/moin/Why_is_Python_slower_than_the_xxx_language|Why is Python slower than the xxx language]]?
  * [[/WhyPythonSlowerThanxxxLanguage|中文回答]]
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  * [http://wiki.python.org/moin/How_to_start_learning_Python%3F_Any_suggestions How to start learning Python? Any suggestions]?
  * [wiki:/HowtoStartLearningPython 中文回答]		   * [[http://wiki.python.org/moin/How_to_start_learning_Python%3F_Any_suggestions|How to start learning Python? Any suggestions]]?
  * [[/HowtoStartLearningPython|中文回答]]
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  * [http://wiki.python.org/moin/Is_there_any_tiny_project_or_source_for_participation_or_reference Is there any tiny project or source for participation or reference]?
  * [wiki:/WhereTinyProjectSourceForParticipationReference 中文回答]		   * [[http://wiki.python.org/moin/Is_there_any_tiny_project_or_source_for_participation_or_reference|Is there any tiny project or source for participation or reference]]?
  * [[/WhereTinyProjectSourceForParticipationReference|中文回答]]
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  * [http://wiki.python.org/moin/How_to_make_exe_on_Windows How to make exe on Windows]
  * [wiki:/HowtoMakeExeOnWindows 中文回答]		   * [[http://wiki.python.org/moin/How_to_make_exe_on_Windows|How to make exe on Windows]]
  * [[/HowtoMakeExeOnWindows|中文回答]]
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}}}
关于强类型的问题，容易犯的错误：
1. ==判断：比如id之类字段，从HTTP的POST数据里来的，通常都是str类型，但数据库中取出的时候就是int，直接去做==判断就会得出False。
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关于强类型的问题，容易犯的错误：
1. ==判断：比如id之类字段，从HTTP的POST数据里来的，通常都是str类型，但数据库中取出的时候就是int，直接去做==判断就会得出
False。
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创建 by -- ZoomQuiet [[[DateTime(2008-08-12T02:57:01Z)]]]
||<^>[[PageComment2]]||<^>[:/PageCommentData:PageCommentData]''||		 创建 by -- ZoomQuiet [<<DateTime(2008-08-12T02:57:01Z)>>]

Contents

  1. Python最常见10问
    1. 增补

Python最常见10问

gasolin <[email protected]>
reply-to        [email protected]
to      python-cn`CPyUG`华蟒用户组 <[email protected]>
date    Sat, Aug 9, 2008 at 20:44

十问

  1. 為什麼 Python 既是動態語言又是強型別的語言?
  2. 用哪個 IDE 寫 Python 比較好?
  3. 有什麼關於 Python 語言的好書?
  4. 學 python 語言能找到工作嗎?
  5. 為什麼用縮排而不是用括弧或「End」來分段?
  6. 用哪種 GUI 好?
  7. 為什麼 Python 比 xxx 語言慢?
  8. 如何開始學習 Python 語言？有什麼好建議嗎？
  9. 有什麼小巧的 Python source 或專案項目可以參考練手？
  10. 怎麼在 Windows 上直接跑 Python 程式 (不先安裝 Python)?

增补

from    Gary Shi <[email protected]>
reply-to        [email protected]
to      python-cn`CPyUG`华蟒用户组 <[email protected]>
date    Mon, Nov 10, 2008 at 14:38
subject [CPyUG:70834] 关于10个Python语言问题的补充

1. 为什么Python的赋值操作“=”不是表达式？ 比如，可以写a=10，可以写a=b=10，但不能写a=(b=10)，更不能写while buf = sock.recv(4096): ... 不可否认后种写法在有些时候确实方便，可以少写不少while True: ...

2. 为什么没有do-while循环？ 曾经的PEP-315，被defer了，因为老大说不喜欢……

3. 为什么try block的except和final不能一起写？ 貌似在py3000中解决了，但要实用还是好遥远……

4. 为什么time.sleep()会抛OSError？ 从道理上说，sleep()会返回-1所以应该对应OSError，但实际写的时候基本上新手都会中招，自己写的daemon跑着跑着一个sleep就 被直接throw到整个进程退出。我是觉得，差不多有10%的POSIX调用，返回值是不用检查的，写C的时候有这样的习惯，但在Python里如果忘 记了try..except，后果就会很严重。是不是os模块应该有一个不是那么strict的抛exception的选项？

关于缩排和括号的对比，我个人对缩排倒没有太大的意见，但在几个事情上觉得确实不方便： 

1. 邮件标准一般对于行首的空格是自动干掉的，所以在邮件里贴python源代码就变得特别麻烦。
2. 无法自动re-indent，好像很少有程序可以判断原先的indent关系然后重排。
3. 调试的时候，要暂时关掉一段程序比较麻烦，只能写if False:然后把下面的部分indent进去。

关于强类型的问题，容易犯的错误： 1. ==判断：比如id之类字段，从HTTP的POST数据里来的，通常都是str类型，但数据库中取出的时候就是int，直接去做==判断就会得出False。

2. os.exec/os.spawn系调用，一定要求所有参数都是str类型的，有些比如int类型忘记转换就写进去，执行的时候就抛 OSError。

反馈

创建 by -- ZoomQuiet [2008-08-12 02:57:01]

PyTop10FAQ (last edited 2009-12-25 07:17:26 by localhost)