Fetching value from a nested dictionary

getDicKeyValues.py

#!/usr/bin/python
__author__ = 'Vishal Taj PM'
def getDicKeyValue(data,search):
    '''
    This can also be used to get data from json object
    Instruction
    Function accepts 2 parameter
    1 A nested dictionary
    2 List of Keys in order to travers 
    '''
    
    dataPos = data
    for s in search:
        if isinstance(dataPos,dict):
            if dataPos.has_key(s):
                dataPos = dataPos[s]
        elif isinstance(dataPos,list):
            if len(dataPos) > 1:
                dataList = []
                for datas in dataPos:
                    if datas.has_key(s):
                        dataList.append(datas[s])
                dataPos = tuple(dataList)
            elif dataPos[0].has_key(s):
                dataPos = dataPos[0][s]
    return dataPos



search = ['formProperties','enumValues','id']


print getDicKeyValue(data,search)