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Revision 555ac45b20c299eb5c1efc9c6c76a757bccf4a7e authored by Andrew M. Kuchling on 31 July 2006, 12:39:05 UTC, committed by Andrew M. Kuchling on 31 July 2006, 12:39:05 UTC
Is the explanation of the 'stacklevel' parameter clear? Please feel free to edit it. I don't have LaTeX installed on this machine, so haven't verified that the markup is correct. Will check tonight, or maybe the automatic doc build will tell me.
1 parent 43bae41
Tip revision: 555ac45b20c299eb5c1efc9c6c76a757bccf4a7e authored by Andrew M. Kuchling on 31 July 2006, 12:39:05 UTC
Document PyErr_WarnEx. (Bad Neal! No biscuit!)
Document PyErr_WarnEx. (Bad Neal! No biscuit!)
Tip revision: 555ac45
functools.py
"""functools.py - Tools for working with functions and callable objects
"""
# Python module wrapper for _functools C module
# to allow utilities written in Python to be added
# to the functools module.
# Written by Nick Coghlan <ncoghlan at gmail.com>
# Copyright (C) 2006 Python Software Foundation.
# See C source code for _functools credits/copyright
from _functools import partial
# update_wrapper() and wraps() are tools to help write
# wrapper functions that can handle naive introspection
WRAPPER_ASSIGNMENTS = ('__module__', '__name__', '__doc__')
WRAPPER_UPDATES = ('__dict__',)
def update_wrapper(wrapper,
wrapped,
assigned = WRAPPER_ASSIGNMENTS,
updated = WRAPPER_UPDATES):
"""Update a wrapper function to look like the wrapped function
wrapper is the function to be updated
wrapped is the original function
assigned is a tuple naming the attributes assigned directly
from the wrapped function to the wrapper function (defaults to
functools.WRAPPER_ASSIGNMENTS)
updated is a tuple naming the attributes off the wrapper that
are updated with the corresponding attribute from the wrapped
function (defaults to functools.WRAPPER_UPDATES)
"""
for attr in assigned:
setattr(wrapper, attr, getattr(wrapped, attr))
for attr in updated:
getattr(wrapper, attr).update(getattr(wrapped, attr))
# Return the wrapper so this can be used as a decorator via partial()
return wrapper
def wraps(wrapped,
assigned = WRAPPER_ASSIGNMENTS,
updated = WRAPPER_UPDATES):
"""Decorator factory to apply update_wrapper() to a wrapper function
Returns a decorator that invokes update_wrapper() with the decorated
function as the wrapper argument and the arguments to wraps() as the
remaining arguments. Default arguments are as for update_wrapper().
This is a convenience function to simplify applying partial() to
update_wrapper().
"""
return partial(update_wrapper, wrapped=wrapped,
assigned=assigned, updated=updated)
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