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Merge pull request #44 from cournape/enh/speedup-convert 

ENH: speed up convert.
This commit is contained in:
Hynek Schlawack 2016-05-21 20:58:48 +02:00
parent f4b2e1bd72 9cb53a3122
commit 5d4cda8181
1 changed files with 10 additions and 2 deletions
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12
src/attr/_make.py
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@ -420,6 +420,14 @@ def fields(cl):
return copy.deepcopy(attrs)
def _fast_attrs_iterate(inst):
""" Fast internal iteration over the attr descriptors.
Using fields to iterate is slow because it involves deepcopy.
"""
return inst.__class__.__attrs_attrs__
def validate(inst):
"""
Validate all attributes on *inst* that have a validator.
@ -431,7 +439,7 @@ def validate(inst):
if _config._run_validators is False:
return
for a in inst.__class__.__attrs_attrs__:
for a in _fast_attrs_iterate(inst):
if a.validator is not None:
a.validator(inst, a, getattr(inst, a.name))
@ -444,7 +452,7 @@ def _convert(inst):
:param inst: Instance of a class with ``attrs`` attributes.
"""
for a in fields(inst.__class__):
for a in _fast_attrs_iterate(inst):
if a.convert is not None:
setattr(inst, a.name, a.convert(getattr(inst, a.name)))