python - How to ConfigParse a file keeping multiple values for identical keys? -

i need able use configparser read multiple values same key. example config file:

[test] foo = value1 foo = value2 xxx = yyy 

with 'standard' use of configparser there 1 key foo value value2. need parser read in both values.

following entry on duplicate key have created following example code:

from collections import ordereddict configparser import rawconfigparser  class orderedmultisetdict(ordereddict):     def __setitem__(self, key, value):          try:             item = self.__getitem__(key)         except keyerror:             super(orderedmultisetdict, self).__setitem__(key, value)             return          print "item: ", item, value         if isinstance(value, list):             item.extend(value)         else:             item.append(value)         super(orderedmultisetdict, self).__setitem__(key, item)   config = rawconfigparser(dict_type = ordereddict) config.read(["test.cfg"]) print config.get("test",  "foo") print config.get("test",  "xxx")  config2 = rawconfigparser(dict_type = orderedmultisetdict) config2.read(["test.cfg"]) print config2.get("test",  "foo") print config.get("test",  "xxx") 

the first part (with config) reads in config file 'usual', leaving value2 value foo (overwriting/deleting other value) , following, expected output:

value2 yyy 

the second part (config2) uses approach append multiple values list, output instead

['value1', 'value2', 'value1\nvalue2'] ['yyy', 'yyy'] 

how rid of repetitive values? expecting output follows:

['value1', 'value2'] yyy 

or

['value1', 'value2'] ['yyy'] 

(i don't mind if every value in list...). suggestions welcome.

after small modification, able achieve want:

class multiordereddict(ordereddict):     def __setitem__(self, key, value):         if isinstance(value, list) , key in self:             self[key].extend(value)         else:             super(ordereddict, self).__setitem__(key, value)  config = configparser.rawconfigparser(dict_type=multiordereddict) config.read(['a.txt']) print config.get("test",  "foo") print config.get("test",  "xxx") 

outputs:

['value1', 'value2'] ['yyy']