Getting specific data from list of dictionaries in Python using dot notation

I have a list of dictionaries and strings like so:

    listDict = [{'id':1,'other':2}, {'id':3,'other':4}, 
                {'name':'Some name','other':6}, 'some string']

I want a list of all the ids (or other attributes) from the dictionaries via dot operator. So, from the given list I would get the list:

listDict.i开发者_运维百科d
[1,3]

listDict.other
[2,4,6]

listDict.name
['Some name']

Thanks

python doesn't work this way. you'd have to redefine your listDict. the built-in list type doesn't support such access. the simpler way is just to get the new lists like this:

>>> ids = [d['id'] for d in listDict if isinstance(d, dict) and 'id' in d]
>>> ids
[1, 3]

P.S. your data structure seems to be awfully heterogeneous. if you explain what you're trying to do, a better solution can be found.

To do that, you'd need to create a class based on list:

    class ListDict(list):
       def __init__(self, listofD=None):
          if listofD is not None:
             for d in listofD:
                self.append(d)

       def __getattr__(self, attr):
          res = []
          for d in self:
             if attr in d:
                res.append(d[attr])
          return res

    if __name__ == "__main__":
       z = ListDict([{'id':1, 'other':2}, {'id':3,'other':4},
                    {'name':"some name", 'other':6}, 'some string'])
       print z.id
       print z.other

   print z.name