formats an integer input: integer return: string
(n)
| 8 | interval = 123456 |
| 9 | |
| 10 | def fmt_n(n): |
| 11 | """ |
| 12 | formats an integer |
| 13 | input: integer |
| 14 | return: string |
| 15 | """ |
| 16 | nstr = '%d' % (n) |
| 17 | nlist = list(nstr) |
| 18 | for pos in range(len(nstr) - 3, 0, -3): |
| 19 | nlist.insert(pos, ',') |
| 20 | return ''.join(nlist) |
| 21 | |
| 22 | |
| 23 | def isprime(n): |