Mercurial > hg
view mercurial/thirdparty/zope/interface/_flatten.py @ 37179:49630e75635d
thirdparty: allow zope.interface.advice to be lazily imported
The symbol from this module is only used in functions. Let's access
that symbol through its imported module so importing
zope.interface.advice can be lazy.
Differential Revision: https://phab.mercurial-scm.org/D2931
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Wed, 21 Mar 2018 18:13:40 -0700 |
parents | 68ee61822182 |
children |
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############################################################################## # # Copyright (c) 2002 Zope Foundation and Contributors. # All Rights Reserved. # # This software is subject to the provisions of the Zope Public License, # Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution. # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS # FOR A PARTICULAR PURPOSE. # ############################################################################## """Adapter-style interface registry See Adapter class. """ from __future__ import absolute_import from .interface import Declaration def _flatten(implements, include_None=0): try: r = implements.flattened() except AttributeError: if implements is None: r=() else: r = Declaration(implements).flattened() if not include_None: return r r = list(r) r.append(None) return r