from dateutil.parser import parse as parseDate
from datetime import datetime, time, timedelta
from time import strftime

chaine = '16/12/201602:15:00'
dt = datetime.strptime(chaine, '%d/%m/%Y%I:%M:%S')
# 16/12/2016 2:15:00
print(dt.strftime("%Y/%m/%d %H:%M:%S"))
#2016-12-16 02:15:00
print(dt.strftime("%Y-%m-%d %H:%M:%S"))
# 20161216 021500
print(dt.strftime("%Y%m%d %H%M%S"))