Traceback (most recent call last):
File "mov_avg.py", line 9, in <module>
data_frame['100ma']= data_frame['Adj Close'].rolling(window=100, min_periods=0).mean()
File "/usr/lib/python3/dist-packages/pandas/core/generic.py", line 2360, in __getattr__
(type(self).__name__, name))
AttributeError: 'Series' object has no attribute 'rolling'