Ohhh boy. The problem is when the guy on the float(5) side genuinely believes that this is better code style. At the end of the day you do have to appeal to som

Ohhh boy. The problem is when the guy on the float(5) side genuinely believes that this is better code style. At the end of the day you do have to appeal to some system, whether it be to the PEP, or to SOLID design principles, or even to "someone else thinks this is a good idea on stack overflow". Personally I like to go with "is accepted by the community" as opposed to "is accepted by most people in this room" or "Greg thinks it's beautiful".