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From: Cecil Westerhof <Cecil@decebal.nl>
Newsgroups: comp.lang.python
Subject: Not possible to hide local variables
Organization: Decebal Computing
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Date: Tue, 28 Apr 2015 09:33:37 +0200
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Xref: csiph.com comp.lang.python:89486

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?

-- 
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof