pandas add dict to frame with multiindex in columns

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-52-cfc23f32d34d> in <module>()
----> 1 dataframe["my_home_city"]=my_home_city

C:\Users\lhk\Anaconda3\lib\site-packages\pandas\core\frame.py in __setitem__(self, key, value)
   2417         else:
   2418             # set column
-> 2419             self._set_item(key, value)
   2420
   2421     def _setitem_slice(self, key, value):

C:\Users\lhk\Anaconda3\lib\site-packages\pandas\core\frame.py in _set_item(self, key, value)
   2483
   2484         self._ensure_valid_index(value)
-> 2485         value = self._sanitize_column(key, value)
   2486         NDFrame._set_item(self, key, value)
   2487

C:\Users\lhk\Anaconda3\lib\site-packages\pandas\core\frame.py in _sanitize_column(self, key, value, broadcast)
   2654
   2655             # turn me into an ndarray
-> 2656             value = _sanitize_index(value, self.index, copy=False)
   2657             if not isinstance(value, (np.ndarray, Index)):
   2658                 if isinstance(value, list) and len(value) > 0:

C:\Users\lhk\Anaconda3\lib\site-packages\pandas\core\series.py in _sanitize_index(data, index, copy)
   2798
   2799     if len(data) != len(index):
-> 2800         raise ValueError('Length of values does not match length of ' 'index')
   2801
   2802     if isinstance(data, PeriodIndex):

ValueError: Length of values does not match length of index