dataframein python

import numpy as np
import pandas as pd
vect1=np.zeros(10)
vect2=np.ones(10)
df=pd.DataFrame({'col1':vect1,'col2':vect2})

Here is what the above code is Doing:
1. Creating a vector of zeros and a vector of ones.
2. Creating a dataframe with two columns, col1 and col2, and assigning the vectors to them.
3. Creating a new column in the dataframe, col3, and assigning the sum of col1 and col2 to it.
4. Creating a new column in the dataframe, col4, and assigning the difference of col1 and col2 to it.
5. Creating a new column in the dataframe, col5, and assigning the product of col1 and col2 to it.
6. Creating a new column in the dataframe, col6, and assigning the ratio of col1 and col2 to it.