'''
 This program does this:
 opens a file for writing
 generates 100 random numbers (each from 1 to 1000), and writes it,
 wraps the output line very 10 numbers
'''
import random

output_file_name = 'numbers_rand_wrapped.txt'

out_handle = open(output_file_name, 'w')

n_nums = 0
for i in range(1000):
    number = random.randrange(1,1001)
    out_handle.write(str(number) + ' ')
    n_nums += 1
    if n_nums == 10:
        out_handle.write('\n')
        n_nums = 0

if n_nums > 0:
    out_handle.write('\n')

out_handle.close()