python strftime('%s') code example
Example 1: time.strftime("%H:%M:%S") in python
time.strftime(format[, t])
Example 2: datetime.strftime() syntax
from datetime import datetime
date_string = "21 June, 2018"
print("date_string =", date_string)
print("type of date_string =", type(date_string))
date_object = datetime.strptime(date_string, "%d %B, %Y")
print("date_object =", date_object)
print("type of date_object =", type(date_object))