praba kar wrote: > Dear All, > > Python 2.3 creates byte code with *.pyc > extention. But Python 2.4 creates bytes code with > *.pyo. Is there any difference between *.pyc > and *.pyo?. > Yes. The .pyo files are optimized by removing certain features that aren't essential to execution (things like doc strings).
> Actually After python compiled a program > then that program will run from the *.pyc byte > code. If I delete that byte code what will be > happen.? > The next time you import the module concerned the interpreter will recreate the .pyc file. > If I delete *.pyc byte code in the python > 2.3 then It will create again *.pyc byte code. > But If I delete *.pyo byte code in the python > 2.4 then It will not create again *.pyo. Why > this difference. > There is no difference between 2.3 and 2.4 in their treatment of .pyc and .pyo files. The .pyo files are used when you give the interpreter the -O option to indicate you want optimized performance. Most people happily live without ever using this option, but in certain cases it can save some run time. > If I delete byte code of the python. > I want to know Whether it will affect the > performance of the programme or not. > The interpreter will have to take the time to re-create the .pyc on imported modules. If the files can't be created (due to permission problems or whatever) the module has t be recompiled each execution. > Kindly clear me all the doubts regarding > byte code of python. > > with regards > Prabahar > > Hope this helps. regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
