def turntimestamp(d,u):

dated=datetime.strptime(d,'%Y-%m-%d %H:%M:%S')

try:

zone=int(u[3:6])

except:

zone=int(u[3:5])

tz_5=timezone(timedelta(hours=zone))

dt=dated.replace(tzinfo=tz_5)

print(zone,dt.timestamp())

print(turntimestamp('2015-1-21 9:01:30','UTC+5:00'))

print(turntimestamp('2015-6-1 08:10:30','UTC+7:00'))

print(turntimestamp('2015-5-31 16:10:30','UTC-09:00'))