# Create variable with TRUE if nationality is USA<br /> american = df[‘nationality’] == “USA”</p> <p># Create variable with TRUE if age is greater than 50<br /> elderly = df[‘age’] > 50</p> <p># Select all cases where nationality is USA and age is greater than 50<br /> df[american & elderly]

filterinfDataframe = dfObj[(dfObj[‘Sale’] > 30) & (dfObj[‘Sale’] < 33) ]<br />