Claudio Grondi schrieb: >> Im newbie to Python (I found it three weeks ago) , in fact Im newbie to >> programming. I'm being reading and training with the language, but I >> still wondering about what Classes are used to. Could you please give >> me some examples?? [...] > I don't know any really good examples which were able to demonstrate > what Classes are good for and I am in programming already for decades.
Then you have in all those decades for sure never seen a GUI program done with the Win32 API (not OO, ugly, hard to grasp) and a Delphi equivalent (OO, elegant, easy). > There is actually no real need for usage of Classes. This is your opinion, not a fact as your wording suggests. If the OP is asking for examples it doesn't make sense to answer "Hey, I don't know any examples". > The notion, that they could be useful comes eventually with longer > programming experience and/or with growing size of the code library. I don't think so. OO is modeled after human reasoning. Look e.g. at phrases like Bob calls a friend, Bob learns math. What is better: Bob.call(friend) or human_call(Bob, friend), Bob.learn(math) or human_learn(Bob, math)? On the other hand there are cases where the emphasis is on the verb, e.g. compute the sine of alpha: sin(alpha) is perfect, no need to code alpha.sin(). Therefore I like hybrid languages like python giving the programmer the freedom to choose an appropriate model. > If you can avoid to learn about them, at least at the beginning, > take the chance - it will save you much trouble and help to get > things done. Excuse me, but to present your personal experience as a law of nature is not very helpful for a newbie seeking for advice not for propaganda. It is plain wrong to claim that procedural programming is kind of natural and OOP is rocket science. > I for myself try to avoid classes where I can, especially > inheritance, because I consider the latter in most cases evil. There are terrible OO libraries out there but this is not a genuine feature of OOP. Bad code can be written in lots of ways. > There are sure many others who can't imagin to program > without classes, so don't conclude that there is a > contradiction here - it's just the question of taste It's not a question of taste it's a question of the kind of problem to solve. Peter Maas, Aachen -- http://mail.python.org/mailman/listinfo/python-list
