I do not think you can override a property.
Ramit Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology 712 Main Street | Houston, TX 77002 work phone: 713 - 216 - 5423 -----Original Message----- From: tutor-bounces+ramit.prasad=jpmchase....@python.org [mailto:tutor-bounces+ramit.prasad=jpmchase....@python.org] On Behalf Of Jim Byrnes Sent: Wednesday, April 13, 2011 3:34 PM To: tutor@python.org Subject: [Tutor] Need help with the property function I'm trying to teach myself OOP in python (again). The following code from Dawson's book runs fine, unaltered [1]. class Critter(object): """ A virtual pet """ def __init__(self, name): print "A new critter is born" self.name = name def get_name(self): return self.__name def set_name(self, new_name): if new_name == "": print "A critters name cant be the empty string" else: self.__name = new_name print "Name change successful" name = property(get_name, set_name) #[1] # name = property(get_name) #[2] #different_name = property(get_name) #[3] def talk(self): print "Hi. I'm", self.name If I change [1] to [2] I get: Traceback (most recent call last): File "propertycritter.py", line 26, in <module> crit = Critter("Poochie") File "propertycritter.py", line 7, in __init__ self.name = name AttributeError: can't set attribute If I change [1] to [3] the program runs with no errors. Could someone please explain why I am seeing these results. Thanks, Jim _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor This communication is for informational purposes only. It is not intended as an offer or solicitation for the purchase or sale of any financial instrument or as an official confirmation of any transaction. All market prices, data and other information are not warranted as to completeness or accuracy and are subject to change without notice. Any comments or statements made herein do not necessarily reflect those of JPMorgan Chase & Co., its subsidiaries and affiliates. This transmission may contain information that is privileged, confidential, legally privileged, and/or exempt from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the information contained herein (including any reliance thereon) is STRICTLY PROHIBITED. Although this transmission and any attachments are believed to be free of any virus or other defect that might affect any computer system into which it is received and opened, it is the responsibility of the recipient to ensure that it is virus free and no responsibility is accepted by JPMorgan Chase & Co., its subsidiaries and affiliates, as applicable, for any loss or damage arising in any way from its use. If you received this transmission in error, please immediately contact the sender and destroy the material in its entirety, whether in electronic or hard copy format. Thank you. Please refer to http://www.jpmorgan.com/pages/disclosures for disclosures relating to European legal entities. _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
