[Python-Dev] PEP397 no command line options to python? (original) (raw)

Vinay Sajip vinay_sajip at yahoo.co.uk
Mon Oct 17 16:20:27 CEST 2011

Sam Partington <sam.partington gmail.com> writes:

That sounds like an explanation of why it hasn't been implemented before, not an explanation of why it should continue that way.

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.

In any case, I think that expectation is not complete. In my case it was my editor that inserted the '-u' on my behalf.

Or why might I not set the default action for .py files to be "py -tt %1", or "py -3 %1". Why deny any of the arguments to a pylauncher user?

Don't forget that customised commands allow Python to be invoked from shebang lines with fair flexibility.

>> Incidentally whilst implementing this I also noticed a bug in the >> pylauncher whereby the py launcher would incorrectly treat "py t3" as >> a request for python version as if '-3' had been specified.  I have a >> small patch that fixes this and implements the above for pylauncher >> with extra tests if there is interest. > > That certainly sounds like a bug and a patch sent to > https://bitbucket.org/vinay.sajip/pylauncher will be appreciated!

The patch does both the bug fix and the arg skipping at present, but I'll happily separate them if needs be.

Don't worry about separating them for now, assuming that it's fairly easy to figure out which bit is which :-)

Thanks & regards,

Vinay Sajip

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