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  • \$\begingroup\$ You can save two bytes by defining j="".join (adding 9+1 bytes) and replacing ''.join with j (saving 6*2 bytes; 10-12 = -2). \$\endgroup\$ Commented Sep 8, 2017 at 13:34
  • \$\begingroup\$ @JonathanFrech Cool, thanks \$\endgroup\$ Commented Sep 8, 2017 at 13:38
  • \$\begingroup\$ Also, as the input is always one integer, you can replace eval with int to save one entire byte. Using Python 2, one could entirely remove eval() (6 bytes) and the print parentheses (1 byte) to save 7 bytes. \$\endgroup\$ Commented Sep 8, 2017 at 15:37
  • \$\begingroup\$ Looks good, but the output should contains new lines in it! You are almost done. \$\endgroup\$ Commented Sep 8, 2017 at 15:56
  • \$\begingroup\$ @CyrilGandon done \$\endgroup\$ Commented Sep 8, 2017 at 16:54