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# Copyright 2024 The etils Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Graph utils."""
import os
import sys
import warnings
def set_verbose() -> None:
"""Log stderr & `absl.logging` in Colab (filtered by default)."""
# pylint: disable=g-import-not-at-top
# pytype: disable=import-error
from absl import logging
from colabtools import googlelog
# pytype: enable=import-error
# pylint: enable=g-import-not-at-top
logging.set_verbosity(logging.INFO)
googlelog.set_global_capture(True)
# See:
# https://docs.python.org/3/library/warnings.html#overriding-the-default-filter
if not sys.warnoptions:
warnings.simplefilter('default')
os.environ['PYTHONWARNINGS'] = 'default' # Also affect subprocesses
def patch_graphviz() -> None:
"""Fix `graphviz` display on Colab.
By default, graphviz object raises an error when displayed on Colab:
```
ExecutableNotFound: failed to execute ['dot', '-Tsvg'], make sure the
Graphviz executables are on your systems' PATH
```
Calling this function fix the behavior.
"""
# pylint: disable=g-import-not-at-top
# pytype: disable=import-error
from colabtools import proto
from colabtools import publish
from colabtools import stubby
import graphviz
# pytype: enable=import-error
# pylint: enable=g-import-not-at-top
request_proto_cls = proto.GetProtoClass('graphviz_server.RenderRequest')
graph_proto_cls = proto.GetProtoClass('graphviz_server.Graph')
def _ipython_display_(self):
graph = graph_proto_cls()
graph.dot = self.source
response = stubby.Call(
'blade:graphviz-server',
'RenderServer.Render',
request_proto_cls(graph=graph),
)
publish.html(response.rendered_graph.rendered_bytes)
if getattr(graphviz, 'files', None):
files = getattr(graphviz, 'files')
files.File._ipython_display_ = ( # pylint: disable=protected-access
_ipython_display_
)
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