new_contents: def next_version(v):
  	vList = v.split(".")
  	change = True
  	vList = map(int, vList)
  	for i,n in enumerate(reversed(vList)):
  		if n == 9 and change == True:
  			vList[len(vList) - 1 - i] = 0
  		elif change:
  			vList[len(vList) - 1 - i] += 1
  			change = False
  	return ".".join(str(v) for v in vList)
  	
  print (next_version("3.4.3.9"))
  
subject: Create next-version.py