PyIAQ

Python 罕见问题集 ::-- ZoomQuiet [DateTime(2005-09-06T03:57:19Z)] TableOfContents [http://www.norvig.com/python-iaq.html Infrequently Answered Questions] -- norvig.com

• by [mailto:[email protected] Peter Norvig]

• 收集Python 极精细的特性问题！值得学习！

• 大家来共同翻译吧！创建页面时使用 PyIAQ模板 是也乎…………

1. [wiki:self/PyIAQ/Q1 Q: What is an Infrequently Answered Question?]
2. [wiki:self/PyIAQ/Q2 Q: finally子句里面代码是不是总是会被执行？] 100%-- ["huangyi"]
   • The code in a finally clause will never fail to execute, right?
3. [wiki:self/PyIAQ/Q3 Q: Polymorphism is great; I can sort a list of elements of any type, right?]
4. [wiki:self/PyIAQ/Q4 Q: Can I do ++x and x++ in Python?]

5. [wiki:self/PyIAQ/Q5 Q: Can I use C++'s syntax for ostreams: cout << x << y ... ?]

6. [wiki:self/PyIAQ/Q6 Q: What if I like C++'s printf?]
7. [wiki:self/PyIAQ/Q7 Q: 是否有一种更好的语法来编写字典文本?所有keys都是标识符。] 未完成-- ["huangyi"]
   • Is there a better syntax for dictionary literals? All my keys are identifiers
8. [wiki:self/PyIAQ/Q8 Q: Is there a similar shortcut for objects?]

9. [wiki:self/PyIAQ/Q9 Q: 创建对象很爽，但是如何更新？] 100%-- ZoomQuiet

   • That's great for creating objects; How about for updating?
10. [wiki:self/PyIAQ/Q10 Q: Can I have a dict with a default value of 0 or [ ] or something?]
11. [wiki:self/PyIAQ/Q11 Q: 嘿, 你可以在0.007kb以内的代码里转置一个矩阵吗?] 95%-- ["huangyi"]
    • Hey, can you write code to transpose a matrix in 0.007KB or less?
12. [wiki:self/PyIAQ/Q12 Q: f(*m)这个技巧确实不错。不知道这个语法是否可以用在方法调用上, 比如 x.f(*y)?] todo-- ["huangyi"]
    • The f(*m) trick is cool. Does the same syntax work with method calls, like x.f(*y)?
13. [wiki:self/PyIAQ/Q13 Q: Can you implement abstract classes in Python in 0 lines of code? Or 4?]
14. [wiki:self/PyIAQ/Q14 Q: How do I do Enumerated Types (enums) in Python?]

15. [wiki:self/PyIAQ/Q15 Q: Why is there no Set data type in Python?]

16. [wiki:self/PyIAQ/Q16 Q: Should I, could I use a Boolean type?]
17. [wiki:self/PyIAQ/Q17 Q: Can I do the equivalent of (test ? result : alternative) in Python?]
18. [wiki:self/PyIAQ/Q18 Q: What other major types are missing from Python?]
19. [wiki:self/PyIAQ/Q19 Q: How do I do the Singleton Pattern in Python?]
20. [wiki:self/PyIAQ/Q20 Q: Is no "news" good news?]
21. [wiki:self/PyIAQ/Q21 Q: Can I have a history mechanism like in the shell?]
22. [wiki:self/PyIAQ/Q22 Q: How do I time the execution of my functions?]
23. [wiki:self/PyIAQ/Q23 Q: What does your .python startup file look like?]