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foo.py
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foo.py
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# -*- coding: utf-8 -*-
#
# Copyright 2012-2015 Spotify AB
#
# 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.
#
from __future__ import print_function
import os
import shutil
import time
import luigi
class Foo(luigi.WrapperTask):
task_namespace = 'examples'
def run(self):
print("Running Foo")
def requires(self):
for i in range(10):
yield Bar(i)
class Bar(luigi.Task):
task_namespace = 'examples'
num = luigi.IntParameter()
def run(self):
time.sleep(1)
self.output().open('w').close()
def output(self):
"""
Returns the target output for this task.
:return: the target output for this task.
:rtype: object (:py:class:`~luigi.target.Target`)
"""
time.sleep(1)
return luigi.LocalTarget('/tmp/bar/%d' % self.num)
if __name__ == "__main__":
if os.path.exists('/tmp/bar'):
shutil.rmtree('/tmp/bar')
luigi.run(['examples.Foo', '--workers', '2', '--local-scheduler'])