/usr/lib/python2.7/dist-packages/pylxd/operation.py is in python-pylxd 2.0.0~b1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45  | # Copyright (c) 2016 Canonical Ltd
#
#    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.
class Operation(object):
    """A LXD operation."""
    __slots__ = [
        '_client',
        'class', 'created_at', 'err', 'id', 'may_cancel', 'metadata',
        'resources', 'status', 'status_code', 'updated_at']
    @classmethod
    def wait_for_operation(cls, client, operation_id):
        """Get an operation and wait for it to complete."""
        if operation_id.startswith('/'):
            operation_id = operation_id.split('/')[-1]
        operation = cls.get(client, operation_id)
        operation.wait()
    @classmethod
    def get(cls, client, operation_id):
        """Get an operation."""
        response = client.api.operations[operation_id].get()
        return cls(_client=client, **response.json()['metadata'])
    def __init__(self, **kwargs):
        super(Operation, self).__init__()
        for key, value in kwargs.iteritems():
            setattr(self, key, value)
    def wait(self):
        """Wait for the operation to complete and return."""
        self._client.api.operations[self.id].wait.get()
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