Mine

german@Debian:~$ cat date.py
#!/usr/bin/env python
import time
import datetime
dia=int(raw_input("dia[DD]:"))
mes=int(raw_input("mes[MM]:"))
anio=int(raw_input("anio[YYYY]:"))

foo=datetime.date(anio, mes, dia)

#strftime(foo).lstrip("0")
print "Fue", foo.strftime("%A")
german@Debian:~$ python date.py
dia[DD]:31
mes[MM]:12
anio[YYYY]:2005
Fue Saturday