#=====================================================================
# name: mydigit.py
#
# category: Python module
#
# description
#   This module defines functions that convert numbers to specified
#   digit numbers (e.g., 300 -> 0300)
#
# author
#   m.yoshimori (myoshimo AT ees.hokudai.ac.jp)
#=====================================================================

def year2yyyy(n):
  if n >= 10000:
    print "Warning in year2yyyy: The input exceeds the limit (=9999)."
    print "The output is set to 0000"
    res = "0000"
  elif n >= 1000:
    res = str(n)
  elif n >= 100:
    res = "0" + str(n)
  elif n >= 10:
    res = "00" + str(n)
  else:
    res = "000" + str(n)
  return res

def year2yyy(n):
  if n >= 1000:
    print "Warning in year2yyy: The input exceeds the limit (=999)."
    print "The output is set to 000"
    res = "000"
  elif n >= 100:
    res = str(n)
  elif n >= 10:
    res = "0" + str(n)
  else:
    res = "00" + str(n)
  return res

def year2yy(n):
  if n >= 100:
    print "Warning in year2yy: The input exceeds the limit (=99)."
    print "The output is set to 00"
    res = "00"
  elif n >= 10:
    res = str(n)
  else:
    res = "0" + str(n)
  return res