pandas syntax for 2 columns from a dataframe to a variable code example

Example 1: plotting two columns of a dataframe in python

df.plot(x='col_name_1', y='col_name_2', style='o')

Example 2: create dataframe from two variables

pd.DataFrame({'r': r, 's': s})

Out: 
    r   s
0   0   0
1   3   5
2   6  10
3   9  15
4  12  20