*행의 index로 특정 행 추출하기
>>>import pd
>>>import pandas
>>>df = pd.DataFrame(np.random.rand(5,3),index=range(0,10,2),columns=list('ABC'))
A B C
0 0.454739 0.865752 0.156482
2 0.415199 0.674212 0.100479
4 0.946274 0.202595 0.632438
6 0.197895 0.080003 0.234574
8 0.389200 0.430107 0.548751
>>> df.iloc[[2]]
A B C
4 0.946274 0.202595 0.632438
>>> df.iloc[[2,4]]
A B C
4 0.946274 0.202595 0.632438
8 0.389200 0.430107 0.548751