json converter example

json.py

#import json
#dic = json.loads(json_data)
dic = {'title':'pypy', 'egg':'spam', 'id':'4'}

_map = {'title':
            {'name':'title',
            'func':lambda val:str(val)},
        'egg':
            {'name':'spam',
             'func':lambda val:str(val)},
        'id':
            {'name':'python_id',
            'func':lambda val:int(val)}
        }
def main():
    d = {}
    for key, val in dic.items():
        d[_map[key]['name']] = _map[key]['func'](val)
    return d
if __name__ == '__main__':
    print(main())

Output:

{'title': 'pypy', 'python_id': 4, 'spam': 'spam'}