Roundup Robot added the comment:
New changeset ea61d8eb8a28 by Yury Selivanov in branch 'default':
Issue 24190: Add inspect.BoundArguments.apply_defaults() method.
https://hg.python.org/cpython/rev/ea61d8eb8a28
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nosy: +python-dev
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Yury Selivanov added the comment:
Thanks for the suggestion, Antoine!
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resolution: - fixed
stage: patch review - resolved
status: open - closed
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Python tracker rep...@bugs.python.org
http://bugs.python.org/issue24190
Yury Selivanov added the comment:
Well, the docs example only binds explicit defaults in function signature.
Implicit defaults for *args and **kwargs (`()` and `{}`) aren't usually useful
(in my opinion).
Do you guys have any good use case for such method? I use the Signature API
Yury Selivanov added the comment:
FWIW it wasn't as easy as I thought it would be :) You were right, docs
example is very basic.
Please take a look at the attached patch.
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assignee: - yselivanov
keywords: +patch
stage: - patch review
Added file:
Antoine Pitrou added the comment:
Le 14/05/2015 17:45, Yury Selivanov a écrit :
Well, the docs example only binds explicit defaults in function
signature. Implicit defaults for *args and **kwargs (`()` and `{}`)
aren't usually useful (in my opinion).
When the defaults are filled I expect
Antoine Pitrou added the comment:
That sounds good to me, thank you!
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http://bugs.python.org/issue24190
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Yury Selivanov added the comment:
Do you guys have any good use case for such method?
A use case was given in issue22998.
My use case is JIT-compiling functions and function calls in Numba. We
reimplement the function calls ourselves, so need a complete mapping of
arguments to values.
R. David Murray added the comment:
See issue 22998. The more complete and thus more complex example in the last
message makes it look like including this in the library might be a good idea.
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nosy: +r.david.murray
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Antoine Pitrou added the comment:
My example forgets the function declaration, which is:
def f(a, b=5, *c, d=5): pass
...
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http://bugs.python.org/issue24190
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New submission from Antoine Pitrou:
The recipe to inject default values in a BoundArguments instance is given in
the doc, but it's not trivial. Furthermore, it's actually incomplete: it
doesn't handle any star-arguments, e.g.:
sig = inspect.signature(f)
ba = sig.bind(2, d=4)
for param in
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