>> From a desire to keep the launcher as simple as possible, and to minimise
> the >> need to synchronise the launcher with command line parameter changes in > future >> versions of Python. > > As simple as possible yes... but no simpler. I think having > pylauncher behave so differently in the two cases of : > > py -u test.py > py test.py > > Is very unexpected. And to do so silently, without warning will cause It's only unexpected if you don't read the PEP. From there: "The launcher may offer some conveniences for Python developers working interactively - for example, starting the launcher with no command-line arguments will launch the default Python with no command-line arguments. Further, command-line arguments will be supported to allow a specific Python version to be launched interactively - however, these conveniences must not detract from the primary purpose of launching scripts and must be easy to avoid if desired." > real headaches_ for users, *especially* since py -h lists -u as one of > the options, it does not say 'here are the python options but you must > call PythonXX/python.exe to use them'. Well, it's easy enough to make that clearer in the help output of py.exe :-) > [headaches : it did for me as I ended up with a broken build of my app > due to different parts of my app built for different pythons.] Why does the need arise to invoke py.exe in a build system? Why not just reference the Python executable you want directly? > To fix this the launcher doesn't need to track all python command line > options, only those that take two args. I don't really see that it > will be such a maintenance burden to have the launcher track any new > ones. Python has only two such options after 20 years of development. > > As for complexity it's less than 10 lines of C. Plus tests, presumably ... let's see 'em :-) > That's a cool feature which I'd not really read up on, but that > requires a global configuration file change, it's not doable on a per > usage basis. Per usage = interactively, which is more of a "by-the-by" feature for the launcher, the main purpose being to bring shebang-line functionality to Windows. Regards, Vinay Sajip _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
