How to get the rows of a Pandas DataFrame where a column equals something

gistfile1.rst

I loaded in ArcaCMD_LS_20061229.csv and I wanted to get all the trades involving AAON. The way to get them ended up being:

arca = pd.read_csv('ArcaCMD_LS_20061229.csv')
# This creates a Series of booleans
aaon_bool = arca['symbol'] == 'AAON'
# You can access rows given a series of booleans
aaon = arca[aaon_bool]
print len(aaon)
print aaon[10]