Thank you very much..!! I am starting to learn python for my Bioinformatics work, so I would look for the version that has libraries helpful for me..
On Mon, May 20, 2013 at 6:38 PM, Dave Angel <da...@davea.name> wrote: > On 05/20/2013 05:59 AM, Amal Thomas wrote: > >> hi, >> I am a beginner. I am using a unix sytem (ubuntu 12.10). Python 2.7.3 >> is installed in my system. I found out that Python has version upto 3.3.2. >> > > Welcome, and thanks for telling us your environment up front. > > > > Should I update my python version? >> > > No. Your OS has lots of dependencies on that installed Python, and if you > remove that one (eg. replace it), many things will stop working. > > HOWEVER, you can install a second Python, of whatever version, and use > that for all your own experimenting and learning. So the question is which > one you should use for learning. My comments at the end. > > > Is the syntaxes of the each version >> different? >> >> > Yes. Not only syntax but semantics as well. Version 3.0 was deliberately > a breaking update, where many of the painful gotchas in the language were > fixed, even if it meant things were incompatible. There is a 2to3 utility, > but the transition can be painful for large programs. > > Which one should you learn on? > > #1 --- if you're committed to a particular tutorial, use the version that > matches the tutorial. At your stage, you don't want to have to convert > every example in your head before getting it to work. > > #2 --- If you have a particular library or libraries that you plan to use, > and it's only currently available for one version, then use that version. > > #3 --- If neither of the above apply, then use 3.3 or the soon-coming 3.4. > > What's different? For a beginner, the most noticeable different is that > the print statement in 2.x was replaced by a print function in 3.x For > really simple cases, that just means slap a parentheses around the > argument(s). But the print statement has syntax for redirecting to a file, > while the print function has a parameter. And the technique for > suppressing the trailing newline is different. Etc. > > The second most noticeable difference is that 3.x handles Unicode > directly, so that a string is Unicode, and if you want bytes, those are > different. > > > > > -- > DaveA > > ______________________________**_________________ > Tutor maillist - Tutor@python.org > To unsubscribe or change subscription options: > http://mail.python.org/**mailman/listinfo/tutor<http://mail.python.org/mailman/listinfo/tutor> > -- *AMAL THOMAS Third Year Undergraduate Student Department of Biotechnology IIT KHARAGPUR-721302*
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