[Pyobjc-dev] always replace colons with underscores... most of the time

[Chris M. <pyo...@mc...>]

Consider the following in objective-c:

@interface Person : NSObject {
     NSString *personName;
     float expectedRaise;
}
- (float)expectedRaise;
- (void)setExpectedRaise:(float)x;
- (NSString *)personName;
- (void)setPersonName:(NSString *)aName;
@end

It would make sense to implement it in python as follows:

class Person(NSObject):
     personName = objc.ivar()
     expectedRaise = objc.ivar.float()
     def setExpectedRaise_(self, expectedRaise):
         self.expectedRaise = expectedRaise
     def setPersonName_(self, personName):
         self.personName = personName

It looks like it should work fine for KVC, however the trailing  
underscores on the setAttribute_ calls are not valid. If you replace  
the colons in the objective-c calls with underscores in python as I  
have seen else where, you will get an error when using KVC via an  
NSArrayController.

An unexpected error occured: (AttributeError: 'Person' object has no  
attribute 'setExpectedRaise')

This is resolved when removing the trailing underscore from the method  
call.

Is this an exception to the replace colons in objective-c with  
underscores in python rule?

-chris