df.iloc[3]              # Select via the position of the passed integers
df.iloc[3:5,0:2]        # By integer slices, acting similar to numpy/python 
df.iloc[[1,2,4],[0,2]]  # By lists of integer position locations, similar to the numpy/python style
df.iloc[1:3,:]
df.iloc[:,1:3]
df.iat[1,1]             # For getting fast access to a scalar (equiv to the prior method)