[web2py] customisation in dal.py - what is the best way

[Vineet]

I want to do some customisation in dal.py.
Want to use MySQLdb instead of PyMySQL.
Reason behind it:-- I am going to use a 3rd party lib known as
'bizobj', which uses MySQLdb.
I can change the code to --
-----
import MySQLdb
drivers.append('MySQL')
etc.
---

Pl. tell me whether the below-mentioned procedure will be correct :

1) download the source
2) change the dal.py
3) compile it to .pyc file
4) overwrite the existing dal.pyc with the modified file

Also pl. indicate whether it may break any login in web2py.

Thanks.