On Tue, 09 Aug 2005 16:39:51 +0300, Maksim Kasimov <[EMAIL PROTECTED]> wrote:
> Hello, > i have a class, such as below. > when i try to make instances of the class, > fields __data1 and __data2 gets different values: __data1 behaves like > private field, __data2 - like static > which is the thing i've missed? > thanks for help. > ==================================================== > import time > class my: > __data1 = [] > __data2 = [] > def __init__(self): > print "__data1: ", self.__data1 > print "__data2: ", self.__data2 > for i in time.localtime(): > self.__data2.append(i) The above line changes the existing class attribute __data2, which is shared by all instances of this class. > self.__data1 = self.__data2[:] The above line creates a new instance attribute __data1, and binds it to a copy of __data2. > print "__data1: ", self.__data1 > print "__data2: ", self.__data2 [ example snipped ] HTH, Dan -- Dan Sommers <http://www.tombstonezero.net/dan/> -- http://mail.python.org/mailman/listinfo/python-list
