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From: Terry Reedy <tjreedy@udel.edu>
Subject: Re: Documentation, assignment in expression.
Date: Mon, 26 Mar 2012 12:00:50 -0400
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On 3/26/2012 1:36 AM, Steven D'Aprano wrote:
>
> (I seem to recall a language that used a single = for both assignment and
> equality testing, guessing which one you meant from context. BASIC
> perhaps?

Right. In some Basics, such as MS GW-Basic (I still have their book), a 
= b = c meant a = (b = c), or in Python, a = b==c.

-- 
Terry Jan Reedy