import pandas as pd
data = pd.read_csv('../input/udemy-courses/udemy_courses.csv')

x = pd.Series([int(i[:4]) for i in data.published_timestamp])
xx = pd.DataFrame(x,columns=['published_year'])
z = pd.Series([int(i[5:7]) for i in data.published_timestamp])
zz = pd.DataFrame(z,columns=['published_day'])

data = pd.concat([data,xx,zz],axis=1)
data