我发现ConfigParser模块的打印没有顺序可言!!

converse

取自python 标准库附带示例代码,并且做了一些修改:

1. 
   
2. import ConfigParser
   
3. import sys
   
4. config = ConfigParser.ConfigParser()# set a number of parameters
   
5. config.add_section("book")
   
6. config.set("book", "title", "the python standard library")
   
7. config.set("book", "author", "fredrik lundh")
   
8. 
   
9. config.add_section("ematter")
   
10. config.set("ematter", "pages", 250)# write to screen
    
11. config.add_section("ematter123")
    
12. config.set("ematter123", "pages123", 250)# write to screen
    
13. 
    
14. config.write(sys.stdout)
    
15.                  
    

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打印的顺序是:

1. 
   
2. [book]
   
3. author = fredrik lundh
   
4. title = the python standard library
   
5. 
   
6. [ematter123]
   
7. pages123 = 250
   
8. 
   
9. [ematter]
   
10. pages = 250
    

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但是在Python自带的手册中,却是这么说的:

1. 
   
2. # When adding sections or items, add them in the reverse order of
   
3. # how you want them to be displayed in the actual file.
   
4. # In addition, please note that using RawConfigParser's and the raw
   
5. # mode of ConfigParser's respective set functions, you can assign
   
6. # non-string values to keys internally, but will receive an error
   
7. # when attempting to write to a file or when you get it in non-raw
   
8. # mode. SafeConfigParser does not allow such assignments to take place.
   
9. 
   

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也就是说,打印的时候会按照添加的逆序进行打印,但是上面的结果发现根本不是这么回事.

smallfish_xy

按字母顺序？

jerryfleming

这可是个known problem了，python 3.1之前的都应该有这个问题。因为ConfigParser的核心是一个dictionary,而dictionary在取出key的时候顺序是不确定的。请看这里 http://docs.python.org/3.1/whats ... rdered-dictionaries

nietsche

不是要它有顺序，但应该也应该是按插入的顺序吧？貌似也不是这样的。不知有否解决方法？

shhgs

ConfigParser很烂。自己写一个都比他强。