python date to day of year code example
Example 1: date.month date time
import datetime
dt = datetime.datetime.today()
print dt.year
# Output: 2016
print dt.month
# Output: 8
print dt.day
# Output: 22
Example 2: python datetime day of year
from datetime import datetime
day_of_year = datetime.now().timetuple().tm_yday
Example 3: python weekday
df['date_time'].dt.dayofweek #gives only the index(0-monday,6-sunday)
df['date_time'].dt.weekday_name #gives the day