import pandas as pd
import numpy as np
 
df = pd.DataFrame(np.random.randn(3, 4),
                  index = ['a','b','c'], 
                  columns = ['A', 'B', 'C', 'D'])

print("df = ")
print( df)
print("========================")

print("Row:");
print("df.iloc[1] = ")
print( df.iloc[1])
print("========================")

print("Row slice:");
print("df.iloc[1:3] = ")
print( df.iloc[1:3])
print("========================")

print("Row select:");
print("df.iloc[[0,2]] = ")
print( df.iloc[[0,2]] )
print("========================")

print("Column:");
print("df.iloc[:,1] = ")
print( df.iloc[:,1])
print("========================")

print("Column slice:");
print("df.iloc[:,1:4] = ")
print( df.iloc[:,1:4])
print("========================")

print("Column select:");
print("df.iloc[:,[1,3]] = ")
print( df.iloc[:,[1,3]])
print("========================")

print("Item:");
print("df.iloc[1,1] = ")
print( df.iloc[1,1])
print("========================")