[Patches] [ python-Patches-850482 ] Enhance frame handing in warnings.warn()

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Patches item #850482, was opened at 2003-11-28 00:12
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Category: Library (Lib)
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Submitted By: Walter Dörwald (doerwalter)
Assigned to: Nobody/Anonymous (nobody)
Summary: Enhance frame handing in warnings.warn()

Initial Comment:
This patch enhances warnings.warn() in the following
way: The stacklevel passed in may be negative. In that
case the call stack is searched for the innermost frame
whose module name differs in the first -stacklevel
components. This frame will be used in the report.

So when you have the following call stack:
m1.f()
m1.m11.f()
m1.m12.f()
m2.m21.f()
m2.m22.f()

and the innermost function() m2.m22.f() call
warnings.warn() with a stacklevel of -2 the frame
reported will be from m1.m12.f(), because it is the
first one from outside the m2 package.


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