[Python-Dev] 3.2.1 encoding surprise (original) (raw)
Mark Hammond skippy.hammond at gmail.com
Thu Jul 21 02:27:31 CEST 2011
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On 21/07/2011 10:18 AM, Glenn Linderman wrote:
On 7/20/2011 5:07 PM, Nick Coghlan wrote:
On Thu, Jul 21, 2011 at 8:51 AM, Ethan Furman<ethan at stoneleaf.us> wrote:
I would say that would be a cool enhancement, as it could save a bit of typing, but I think the launcher is quite useful even without path traversal. Two related points:
1. Walking PATH isn't necessary, but the cwd of the py process should be inherited from the shell correctly. If it is, then 'py foo.py' shouldn't need path traversal, it should just look in the current directory. Using PATHEXT to turn 'foo.py' directly into an executable command on PATH from any directory is different and out of scope for the launcher. Sorry, I disagree that it is out of scope. Looking in the current directory is fine, when the script is there, but my scripts are seldom in my data directories, and I want to run scripts (from the PATH) on data that is in the CWD. I consider this a very common use case for using scripts/programs, but then if you want to use py from the command line to tweak which version of Python gets used to execute the script (if the default one didn't work, for example, and you want to try a different one), then suddenly, you have to find the path to the script, and specify it explicitly.
The arguments above apply equally to python.exe. The launcher's job is to find an appropriate python.exe and launch it, not to locate the scripts and all the command-line parsing that would entail. If you want this feature you should advocate for it to be added to Python itself and it will then automatically work in the launcher too.
Mark
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