pandas.core.groupby.DataFrameGroupBy should provide a method to be converted into a (MultiIndex) DataFrame

[c0indev3l]

>>> df1 = pd.DataFrame( { 
    "Name" : ["Alice", "Bob", "Mallory", "Mallory", "Bob" , "Mallory"] , 
    "City" : ["Seattle", "Seattle", "Portland", "Seattle", "Seattle", "Portland"] } )

>>> g1 = df1.groupby( [ "Name" ] )

>>> print g1.head()
               City     Name
Name                        
Alice   0   Seattle    Alice
Bob     1   Seattle      Bob
        4   Seattle      Bob
Mallory 2  Portland  Mallory
        3   Seattle  Mallory
        5  Portland  Mallory

>>>> pd.DataFrame(g1)

raise exception
AttributeError: 'numpy.ndarray' object has no attribute 'index'

[jreback]

pls have a look at the docs, a GroupBy object is only an intermediary step. you need to apply something to it. http://pandas.pydata.org/pandas-docs/dev/groupby.html

maybe you are looking for set_index?

[jreback]

closing as not a bug