时间处理

time_dealing.py

# 2016-10-30T14:02:48.269Z
from datetime import datetime, timedelta
def generate_timestamp(self):
    # now = arrow.now()
    # now.to('GMT')
    # now.format("YYYY-MM-dd'T'HH:mm:ss.SSSZZ")
    date_format = "%Y-%m-%dT%H:%M:%S.%f"
    now = datetime.utcnow().strftime(date_format)
    now = str(now)[0:-3]
    return now + "Z"
        
# change 2016-09-19 to  09/19/2016
import arrow
arrow.get('2016-09-09', 'YYYY-MM-DD').format('MM/DD/YYYY')

# library:
#
# datetime [https://docs.python.org/2/library/datetime.html]
# arrow [http://arrow.readthedocs.io/en/latest/]