1In [2]: df = pd.DataFrame({'a':[1,2,3], 'b':[{'c':1}, {'d':3}, {'c':5, 'd':6}]})
2
3In [3]: df
4Out[3]:
5 a b
60 1 {u'c': 1}
71 2 {u'd': 3}
82 3 {u'c': 5, u'd': 6}
9
10In [4]: df['b'].apply(pd.Series)
11Out[4]:
12 c d
130 1.0 NaN
141 NaN 3.0
152 5.0 6.0