Change inner paren doesn't work in python mode

[Alessandro Piras]

Hi guys,
ci( does not work in python mode.
to replicate:

--- example.py ---
for i in range(10):
    print (1, 2, 3)
---------------------------

position the cursor over the "2"

issue ci(

result:

--- example.py ---
f):
    print (1, 2, 3)
--------------------------

Cheers,
Alessandro