On 04/28, Cecil Westerhof wrote: > If I remember correctly you can not hide variables of a class or make > them read-only? > > I want to rewrite my moving average to python. The init is: > def __init__(self, length): > if type(length) != int: > raise ParameterError, 'Parameter has to be an int' > if n < 0: > raise ValueError, 'Parameter should be greater or equal 2' > self.length = length > self.old_values = [] > self.current_total = 0 > > But when someone changes length, old_values, or current_total that > would wreck havoc with my class instance. What is the best way to > handle this?
Prefix those names with a single leading underscore, which is the convention for private variables. This way, if some user (maybe you! ;) has a good reason to change those values in can be done, but it is quite clear that said user is mucking about with internals and they are on their own. -- ~Ethan~ -- https://mail.python.org/mailman/listinfo/python-list
