import datetime

currentDT = datetime.datetime.now()

print (currentDT.strftime("%Y-%m-%d %H:%M:%S"))

print (currentDT.strftime("%Y/%m/%d"))

print (currentDT.strftime("%H:%M:%S"))

print (currentDT.strftime("%I:%M:%S %p"))

print (currentDT.strftime("%a, %b %d, %Y"))

​