This is from 9.6 (Private variables). I quote - "Notice that code passed to exec, eval() or evalfile() does not consider the classname of the invoking class to be the current class; this is similar to the effect of the global statement, the effect of which is likewise restricted to code that is byte-compiled together. The same restriction applies to getattr(), setattr() and delattr(), as well as when referencing __dict__ directly."
I've read the text so far but there has been no explaination of exec, eval() and evalfile() so far. I suspect they give ways for dynamic execution of text strings containing Python statements. But what does it mean that "code passed to exec, eval() or evalfile() does not consider the classname of the invoking class to be the current class"? What "invoking class"? What "current class". Now there's a hint: - "this is similar to the effect of the global statement, the effect of which is likewise restricted to code that is byte-compiled together." But what does this mean? So far global statement was only mention on page 64 by the sentence - "If a name is declared global, then all references and assignments go directly to the middle scope containing the module's global names." What has this to do with - " the effect of which is likewise restricted to code that is byte-compiled together." At last I learn that - "The same restriction applies to getattr(), setattr() and delattr(), as well as when referencing __dict__ directly." But getattr(), setattr() and delattr() and __dict__ has not been mentioned as far as I recollect. Since no examples are given I don't know what to do with this and what the intention was putting the text above in the tutorial.. Of course I can go to library reference and try to uncover the details there but it's not an easy job if you are a newbie (which is why I started with the tutorial to begin with). Well, I don't want to complain to much about a tutorial which is rather good but would appreciate some hint or reference which would help me to understand the quoted text. Bob -- http://mail.python.org/mailman/listinfo/python-list
