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Code Releases Wiki Activity

applied fix to deprecated decorator to warn only once (thanks Dan)

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This commit is contained in:
Pablo Hoffman 2009-08-17 18:13:45 -03:00
parent 41036af643
commit 4f06f6ef41
1 changed files with 9 additions and 7 deletions
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16
scrapy/utils/decorator.py
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@ -1,4 +1,5 @@
import warnings
from functools import wraps
def deprecated(use_instead=None):
@ -6,19 +7,20 @@ def deprecated(use_instead=None):
as deprecated. It will result in a warning being emitted
when the function is used."""
def wraps(func):
def wrapped(func):
@wraps(func)
def new_func(*args, **kwargs):
message = "Call to deprecated function %s." % func.__name__
if use_instead:
message += " Use %s instead." % use_instead
warnings.warn_explicit(
message,
warnings.warn_explicit(message,
category=DeprecationWarning,
filename=func.func_code.co_filename,
lineno=func.func_code.co_firstlineno + 1
)
lineno=func.func_code.co_firstlineno + 1,
registry=func.func_globals.setdefault('__warningregistry__', \
{}),
module_globals=func.func_globals)
return func(*args, **kwargs)
return new_func
return wraps
return wrapped