/usr/lib/python2.7/dist-packages/dolfin/mesh/meshes.py is in python-dolfin 2016.2.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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"This module provides a simple Python wrapper for the SWIG-generated Mesh class"
# Copyright (C) 2012-2014 Anders Logg
#
# This file is part of DOLFIN.
#
# DOLFIN is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# DOLFIN is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with DOLFIN. If not, see <http://www.gnu.org/licenses/>.
#
# Modified by Marie E. Rognes (meg@simula.no)
# Modified by Martin Sandve Alnæs (martinal@simula.no) 2014
__all__ = []
# Import ufl (used by Mesh extensions in dolfin/swig/mesh/post.i)
import ufl
# Import SWIG-generated extension module (DOLFIN C++)
import dolfin.cpp as cpp
# Replacement constructor for Mesh class. We cannot create a Python
# subclass of cpp.Mesh since then isinstance(UnitSquare, Mesh) would
# not be true.
def __init__(self, *args, **kwargs):
"""Create a mesh from a filename or a geometry.
A mesh may be created from a given filename, which should contain
mesh data stored in DOLFIN XML format:
.. code-block:: python
mesh = Mesh("mesh.xml")
An empty mesh may be created as follows:
.. code-block:: python
mesh = Mesh()
A copy of a mesh may be created as follows:
.. code-block:: python
mesh_copy = Mesh(mesh)
"""
# Reuse C++ doc-string too
__doc__ = cpp.Mesh.__doc__
# Initialize base class
cpp.Mesh.__cppinit__(self, *args, **kwargs)
# Change mesh constructor
cpp.Mesh.__cppinit__ = cpp.Mesh.__init__
cpp.Mesh.__init__ = __init__
def mesh2html(mesh, display_width=800.0):
return cpp.X3DOM.html(mesh)
# Attach ipython notebook svg rendering function for 1D and 2D meshes
from dolfin.mesh.svgtools import mesh2svg
cpp.Mesh._repr_svg_ = mesh2svg
cpp.Mesh._repr_html_ = mesh2html
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