On Wed, 28 Sep 2005 22:07:56 -0700, Paul Rubin wrote: >> One that is in other languages not even possible. A clear disadvantage. >> Python gives me power and does not take it away like the others. > > Huh? If my car has a "feature" that lets someone blow it to > smithereens from hundreds of miles away without even intending to, > that's somehow an advantage?
Funny you should mention that. The other day I stopped at a service station to fill up. I noticed a line of cars at a bowser over in the corner. The bowser was wrapped in a big yellow tape saying "Caution!!! Warning!!! Experimental Petrol, for private use only!!! USE AT OWN RISK!!! CAUTION CAUTION CAUTION Read the Manual Before Using!!!" So naturally I filled up with my car with this private petrol, because I hoped that it would give me more power when accelerating. Well, it certainly did that, wow you should have seen my car go! But alas I should have read the manual first, just like they said. It turned out that this experimental petrol contained an additive that did not suit my car's engine. Three days later, smoke started pouring out of the engine and then it caught fire. I could have read the manual, which I later found out was aware of the risk of fire and gave simple instructions for how to avoid it (adding a cup of ethanol to a full tank of petrol was all it would have taken to prevent the harmful chemical reaction). Instead I made the decision to ignore it, and suffered the consequences. Now, I could take responsibility for my own stupidity in ignoring the warnings and just assuming that there would be no side-effects. Or I could stamp my feet and holler at the top of my voice that it is the petrol seller's fault, and that he should have locked this special fuel away and banned everyone else from using it, to protect idiots like myself from shooting myself in the foot. (Or setting my car on fire, as the case may be.) After all, while I made a free choice to use the private petrol, despite all the warnings and all the reasons why I should not, it certainly shouldn't be my responsibility to deal with the consequences of my own choice. >> The engineering decisions regarding my application should be on my >> side, not the language lawyers. > > No problem, but any decision like that should be expressed in > "writing", by re-declaring the variable so it's no longer private. How do you see this working in practice? Say you have written a class, with a private variable. I decide that I need access to that variable, for reasons you never foresaw. What happens next? I ask you nicely to please change your class and turn that private attribute into a public one. What happens if you refuse? Can I have you taken out and shot and seize ownership of your class, or do I have to copy and paste your class into my code, creating a duplicate class I can modify as much as I like? -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
