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Note that source compatible scripts may continue to refer to the version agnostic python command without affecting portability

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Nick Coghlan 2011-03-05 07:06:50 +00:00
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pep-0394.txt
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@ -48,6 +48,9 @@ Recommendation
This distinction should be made in shebangs, when invoking from a shell This distinction should be made in shebangs, when invoking from a shell
script, when invoking via the system() call, or when invoking in any other script, when invoking via the system() call, or when invoking in any other
context. context.
* One exception to this is scripts that are deliberately written to be source
compatible with both Python 2.x and 3.x. Such scripts may continue to use
``python`` on their shebang line without affecting their portability.
* When reinvoking the interpreter from a Python script, querying * When reinvoking the interpreter from a Python script, querying
``sys.executable`` to avoid hardcoded assumptions regarding the ``sys.executable`` to avoid hardcoded assumptions regarding the
interpreter location remains the preferred approach. interpreter location remains the preferred approach.