[arshajii]

I would guess the bulk of the time is being spent in compilation. You might try "codon build -release day_2.py" then "time ./day_2" to measure just runtime.

[memco]

Good catch! Here's updated runs:

   time python day_2.py

   ________________________________________________________
   Executed in   51.26 millis    fish           external
      usr time   23.38 millis   48.00 micros   23.33 millis
      sys time   21.88 millis  617.00 micros   21.26 millis

   time day_2

   ________________________________________________________
   Executed in  227.06 millis    fish           external
      usr time    8.17 millis   70.00 micros    8.10 millis
      sys time    6.69 millis  708.00 micros    5.98 millis

   time python day_8.py

   ________________________________________________________
   Executed in   53.63 millis    fish           external
      usr time   22.11 millis   51.00 micros   22.06 millis
      sys time   24.63 millis  714.00 micros   23.91 millis

   time day_8

   ________________________________________________________
   Executed in  115.89 millis    fish           external
      usr time    5.83 millis   92.00 micros    5.74 millis
      sys time    4.59 millis  856.00 micros    3.73 millis

Now codon is much faster than Python.