Referring to variables in Python fragments

I'm bothered by having to prefix all my recipe variables with "_no" in
Python code; it's awkward to type, very strange looking for a beginner
such as myself, and probably very easy to accidentally forget.  I have an
alternate suggestion: allow the "$variable" syntax in Python code.  As far
as I can tell, this would just mean replacing "$" with "_no." outside of
string literals.

Taking this a step futher, the "$" could work in string literals, too, so
for example, "the value of X is $X" could become ("the value of X is " +
_no.X).  Another possible improvement would be to allow some of the
extended sytnaxes like $?var and $*var in Python code.

If I wrote a patch for this would it be accepted?

jw



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