On 8/29/07, Kenneth Love <[EMAIL PROTECTED]> wrote: > How do I print the docstring for a class property? > > When I run the code below, I get the docstring for the string module > and not the one I set for the property. > > --------------------------------------------- > # NOTE: Found in Python docs defining built-in functions (such as > # property()). FIXED: Bug in getx, setx, and delx where "__x" > # was misreferenced as "_x". > class C(object): > def __init__(self): > self.__x = None > def getx(self): > return self.__x > def setx(self, value): > self.__x = value > def delx(self): > del self.__x > x = property(getx, setx, delx, "I'm the 'x' property.") > > if __name__ == "__main__" > y = C() > y.x = 'test' > print y.x > print y.x.__doc__ > --------------------------------------------- > > I get the following output: > > --------------------------------------------- > test > str(object) -> string > > Return a nice string representation of the object. > If the argument is a string, the return value is the same object. > --------------------------------------------- > > What am I doing wrong? >
You're looking at an instance, not at the class. y.x is going through the descriptor lookup and is returning the string, so the __doc__ is the the __doc__ of the string object, as you see. If you want to look at the property directly, look it up in the class object: C.x.__doc__ -- http://mail.python.org/mailman/listinfo/python-list
