In[20]: test_list = [['a','b','c'], ['AA','BB','CC']]
In[21]: pd.DataFrame(test_list, columns=['col_A', 'col_B', 'col_C'])
Out[21]:
col_A col_B col_C
0 a b c
1 AA BB CC
In[22]: pd.DataFrame(test_list, index=['col_low', 'col_up']).T
Out[22]:
col_low col_up
0 a AA
1 b BB
2 c CC