scripts honor user PYTHONPATH

[lee218llnl]

enhancement suggested in #25

[coveralls]

Pull Request Test Coverage Report for Build 572

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 32.468%

---

Totals
Change from base Build 568:	0.0%
Covered Lines:	3378
Relevant Lines:	10404

---

💛 - Coveralls

[pramodk]

LGTM but just just curious why not to just do:

export PYTHONPATH=@pythondir@:@pyexecdir@:@PYTHONPATH@:$PYTHONPATH

If PYTHONPATH is empty then we get : extra at the end and it's valid anyway.

[lee218llnl]

LGTM but just just curious why not to just do:

export PYTHONPATH=@pythondir@:@pyexecdir@:@PYTHONPATH@:$PYTHONPATH

If PYTHONPATH is empty then we get : extra at the end and it's valid anyway.

@pramodk anecdotally, I have seen issues before where a dangling ':' character can cause issues with various *PATH variables. I don't remember if it was specifically PYTHONPATH or perhaps PATH or LD_LIBRARY_PATH, but as a precaution, I check *PATH environment variables.