Answers for "Displaying the first 20 rows of a dataframe"

df select first n rows

df2 = df.head(N)
# this should select N rows from top and copy to new df
df3 = df.tail(N)
# this should select N rows from bottom and copy to new df

first five rows of dataframe

#Creating a DataFrame
import pandas as pd
df = pd.DataFrame()
#Getting the first five rows
df.head()