---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
/home/dima/data/external/pandas/pandas/index.pyx in pandas.index.IndexEngine.get_loc (pandas/index.c:3869)()
    156         try:
--> 157             return self.mapping.get_item(val)
    158         except TypeError:

/home/dima/data/external/pandas/pandas/hashtable.pyx in pandas.hashtable.Int64HashTable.get_item (pandas/hashtable.c:6503)()
    302 
--> 303     cpdef get_item(self, int64_t val):
    304         cdef khiter_t k

TypeError: an integer is required

During handling of the above exception, another exception occurred:

KeyError                                  Traceback (most recent call last)
/usr/local/lib/python3.4/dist-packages/dask/dataframe/core.py in __getattr__(self, key)
   1309         try:
-> 1310             return self[key]
   1311         except KeyError as e:

/usr/local/lib/python3.4/dist-packages/dask/dataframe/core.py in __getitem__(self, key)
   1274             # error is raised from pandas
-> 1275             dummy = self._pd[_extract_pd(key)]
   1276 

/home/dima/data/external/pandas/pandas/core/frame.py in __getitem__(self, key)
   1979         else:
-> 1980             return self._getitem_column(key)
   1981 

/home/dima/data/external/pandas/pandas/core/frame.py in _getitem_column(self, key)
   1986         if self.columns.is_unique:
-> 1987             return self._get_item_cache(key)
   1988 

/home/dima/data/external/pandas/pandas/core/generic.py in _get_item_cache(self, item)
   1090         if res is None:
-> 1091             values = self._data.get(item)
   1092             res = self._box_item_values(item, values)

/home/dima/data/external/pandas/pandas/core/internals.py in get(self, item, fastpath)
   3193             if not isnull(item):
-> 3194                 loc = self.items.get_loc(item)
   3195             else:

/home/dima/data/external/pandas/pandas/indexes/base.py in get_loc(self, key, method, tolerance)
   1863             key = _values_from_object(key)
-> 1864             return self._engine.get_loc(key)
   1865 

/home/dima/data/external/pandas/pandas/index.pyx in pandas.index.IndexEngine.get_loc (pandas/index.c:4005)()
    136 
--> 137     cpdef get_loc(self, object val):
    138         if is_definitely_invalid_key(val):

/home/dima/data/external/pandas/pandas/index.pyx in pandas.index.IndexEngine.get_loc (pandas/index.c:3934)()
    158         except TypeError:
--> 159             raise KeyError(val)
    160 

KeyError: 'dot'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
<ipython-input-59-2983061be677> in <module>()
----> 1 gtcov = gtdf.dot( gtdf.T)

/usr/local/lib/python3.4/dist-packages/dask/dataframe/core.py in __getattr__(self, key)
   1310             return self[key]
   1311         except KeyError as e:
-> 1312             raise AttributeError(e)
   1313 
   1314     def __dir__(self):

AttributeError: 'dot'