Give a multiple lists in ouput file, whit the files in a dir; every list have a static amount files

list_files_in_output_file.py

#!/usr/bin/python
import os, math

for root, dirs, files in os.walk("./manual"):
	n = int(input(raw_input("Ingrese el numero de archivos en el que se particionara: ")))
	dbs = ''
	length =len(files) 
	cantArchives = int(math.ceil(float(length)/n))
	print(str(length)+' nombres de db seran guardadas en '+str(cantArchives)+' archivos')
	for i,filename in enumerate(files, start=1):
		dbs +=filename+'\n'
		if(i%n==0 or i==length):
			x = int(math.ceil(float(i)/n))
			f = os.path.join(root,filename)
			a = open("outputs/dbs%s.txt" %x,"w")
			a.write(str(dbs))
			print(dbs+ str(x))
			dbs = ''