Hello.

I noticed there is speed difference between

  a = [0,] # list
  a[0] # fast

and

  a = (0,) # tuple
  a[0] # slow

while solving ICPC puzzle with Python.

I thought this is wierd because, indeed tuple is readonly, there is no conceptual difference between list and tuple when 'extract' item from them.

After investigation, I found this difference comes from the shortcut for list on ceval.c (BINARY_SUBSCR).

Is it valuable to put shortcut for tuple too? I'll attach the patch for release-maint25 branch. Thank you.