diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
commit | 19fcec84d8d7d21e796c7624e521b60d28ee21ed (patch) | |
tree | 42d26aa27d1e3f7c0b8bd3fd14e7d7082f5008dc /src/jaegertracing/thrift/tutorial/py | |
parent | Initial commit. (diff) | |
download | ceph-upstream.tar.xz ceph-upstream.zip |
Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
11 files changed, 742 insertions, 0 deletions
diff --git a/src/jaegertracing/thrift/tutorial/py.tornado/Makefile.am b/src/jaegertracing/thrift/tutorial/py.tornado/Makefile.am new file mode 100755 index 000000000..4b73c1e72 --- /dev/null +++ b/src/jaegertracing/thrift/tutorial/py.tornado/Makefile.am @@ -0,0 +1,36 @@ +# +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you 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. +# + +gen-py.tornado/tutorial/Calculator.py gen-py.tornado/shared/SharedService.py: $(top_srcdir)/tutorial/tutorial.thrift + $(THRIFT) --gen py:tornado -r $< + +all-local: gen-py.tornado/tutorial/Calculator.py + +tutorialserver: all + ${PYTHON} PythonServer.py + +tutorialclient: all + ${PYTHON} PythonClient.py + +clean-local: + $(RM) -r gen-* + +EXTRA_DIST = \ + PythonServer.py \ + PythonClient.py diff --git a/src/jaegertracing/thrift/tutorial/py.tornado/PythonClient.py b/src/jaegertracing/thrift/tutorial/py.tornado/PythonClient.py new file mode 100755 index 000000000..426146fc9 --- /dev/null +++ b/src/jaegertracing/thrift/tutorial/py.tornado/PythonClient.py @@ -0,0 +1,108 @@ +#!/usr/bin/env python + +# +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you 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. +# + +import glob +import logging +import sys + +sys.path.append('gen-py.tornado') +sys.path.insert(0, glob.glob('../../lib/py/build/lib*')[0]) + +from tutorial import Calculator +from tutorial.ttypes import Operation, Work, InvalidOperation + +from thrift import TTornado +from thrift.transport import TTransport +from thrift.protocol import TBinaryProtocol + +from tornado import gen +from tornado import ioloop + + +@gen.coroutine +def communicate(): + # create client + transport = TTornado.TTornadoStreamTransport('localhost', 9090) + # open the transport, bail on error + try: + yield transport.open() + print('Transport is opened') + except TTransport.TTransportException as ex: + logging.error(ex) + raise gen.Return() + + pfactory = TBinaryProtocol.TBinaryProtocolFactory() + client = Calculator.Client(transport, pfactory) + + # ping + yield client.ping() + print("ping()") + + # add + sum_ = yield client.add(1, 1) + print("1 + 1 = {0}".format(sum_)) + + # make a oneway call without a callback (schedule the write and continue + # without blocking) + client.zip() + print("zip() without callback") + + # make a oneway call with a callback (we'll wait for the stream write to + # complete before continuing) + client.zip() + print("zip() with callback") + + # calculate 1/0 + work = Work() + work.op = Operation.DIVIDE + work.num1 = 1 + work.num2 = 0 + + try: + quotient = yield client.calculate(1, work) + print("Whoa? You know how to divide by zero ? -> {0}".format(quotient)) + except InvalidOperation as io: + print("InvalidOperation: {0}".format(io)) + + # calculate 15-10 + work.op = Operation.SUBTRACT + work.num1 = 15 + work.num2 = 10 + + diff = yield client.calculate(1, work) + print("15 - 10 = {0}".format(diff)) + + # getStruct + log = yield client.getStruct(1) + print("Check log: {0}".format(log.value)) + + # close the transport + client._transport.close() + raise gen.Return() + + +def main(): + # create an ioloop, do the above, then stop + ioloop.IOLoop.current().run_sync(communicate) + + +if __name__ == "__main__": + main() diff --git a/src/jaegertracing/thrift/tutorial/py.tornado/PythonServer.py b/src/jaegertracing/thrift/tutorial/py.tornado/PythonServer.py new file mode 100755 index 000000000..e0229a26e --- /dev/null +++ b/src/jaegertracing/thrift/tutorial/py.tornado/PythonServer.py @@ -0,0 +1,100 @@ +#!/usr/bin/env python + +# +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you 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. +# + +import glob +import sys + +sys.path.append('gen-py.tornado') +sys.path.insert(0, glob.glob('../../lib/py/build/lib*')[0]) + +from tutorial import Calculator +from tutorial.ttypes import Operation, InvalidOperation + +from shared.ttypes import SharedStruct + +from thrift import TTornado +from thrift.protocol import TBinaryProtocol + +from tornado import ioloop + + +class CalculatorHandler(object): + def __init__(self): + self.log = {} + + def ping(self): + print("ping()") + + def add(self, n1, n2): + print("add({}, {})".format(n1, n2)) + return n1 + n2 + + def calculate(self, logid, work): + print("calculate({}, {})".format(logid, work)) + + if work.op == Operation.ADD: + val = work.num1 + work.num2 + elif work.op == Operation.SUBTRACT: + val = work.num1 - work.num2 + elif work.op == Operation.MULTIPLY: + val = work.num1 * work.num2 + elif work.op == Operation.DIVIDE: + if work.num2 == 0: + x = InvalidOperation() + x.whatOp = work.op + x.why = "Cannot divide by 0" + raise x + val = work.num1 / work.num2 + else: + x = InvalidOperation() + x.whatOp = work.op + x.why = "Invalid operation" + raise x + + log = SharedStruct() + log.key = logid + log.value = '%d' % (val) + self.log[logid] = log + return val + + def getStruct(self, key): + print("getStruct({})".format(key)) + return self.log[key] + + def zip(self): + print("zip()") + + +def main(): + handler = CalculatorHandler() + processor = Calculator.Processor(handler) + pfactory = TBinaryProtocol.TBinaryProtocolFactory() + server = TTornado.TTornadoServer(processor, pfactory) + + print("Starting the server...") + server.bind(9090) + server.start(1) + ioloop.IOLoop.instance().start() + print("done.") + + +if __name__ == "__main__": + main() diff --git a/src/jaegertracing/thrift/tutorial/py.twisted/Makefile.am b/src/jaegertracing/thrift/tutorial/py.twisted/Makefile.am new file mode 100755 index 000000000..50cd3429d --- /dev/null +++ b/src/jaegertracing/thrift/tutorial/py.twisted/Makefile.am @@ -0,0 +1,37 @@ +# +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you 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. +# + +gen-py/tutorial/Calculator.py gen-py/shared/SharedService.py: $(top_srcdir)/tutorial/tutorial.thrift + $(THRIFT) --gen py:twisted -r $< + +all-local: gen-py/tutorial/Calculator.py + +tutorialserver: all + ${PYTHON} PythonServer.py + +tutorialclient: all + ${PYTHON} PythonClient.py + +clean-local: + $(RM) -r gen-* + +EXTRA_DIST = \ + PythonClient.py \ + PythonServer.py \ + PythonServer.tac diff --git a/src/jaegertracing/thrift/tutorial/py.twisted/PythonClient.py b/src/jaegertracing/thrift/tutorial/py.twisted/PythonClient.py new file mode 100755 index 000000000..2976495e3 --- /dev/null +++ b/src/jaegertracing/thrift/tutorial/py.twisted/PythonClient.py @@ -0,0 +1,80 @@ +#!/usr/bin/env python + +# +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you 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. +# + +import glob +import sys +sys.path.append('gen-py.twisted') +sys.path.insert(0, glob.glob('../../lib/py/build/lib*')[0]) + +from tutorial import Calculator +from tutorial.ttypes import InvalidOperation, Operation, Work + +from twisted.internet.defer import inlineCallbacks +from twisted.internet import reactor +from twisted.internet.protocol import ClientCreator + +from thrift.transport import TTwisted +from thrift.protocol import TBinaryProtocol + + +@inlineCallbacks +def main(client): + yield client.ping() + print('ping()') + + sum = yield client.add(1, 1) + print(('1+1=%d' % (sum))) + + work = Work() + + work.op = Operation.DIVIDE + work.num1 = 1 + work.num2 = 0 + + try: + quotient = yield client.calculate(1, work) + print('Whoa? You know how to divide by zero?') + print('FYI the answer is %d' % quotient) + except InvalidOperation as e: + print(('InvalidOperation: %r' % e)) + + work.op = Operation.SUBTRACT + work.num1 = 15 + work.num2 = 10 + + diff = yield client.calculate(1, work) + print(('15-10=%d' % (diff))) + + log = yield client.getStruct(1) + print(('Check log: %s' % (log.value))) + reactor.stop() + + +if __name__ == '__main__': + d = ClientCreator(reactor, + TTwisted.ThriftClientProtocol, + Calculator.Client, + TBinaryProtocol.TBinaryProtocolFactory(), + ).connectTCP("127.0.0.1", 9090) + d.addCallback(lambda conn: conn.client) + d.addCallback(main) + + reactor.run() diff --git a/src/jaegertracing/thrift/tutorial/py.twisted/PythonServer.py b/src/jaegertracing/thrift/tutorial/py.twisted/PythonServer.py new file mode 100755 index 000000000..034e4a312 --- /dev/null +++ b/src/jaegertracing/thrift/tutorial/py.twisted/PythonServer.py @@ -0,0 +1,97 @@ +#!/usr/bin/env python + +# +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you 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. +# + +import glob +import sys +sys.path.append('gen-py.twisted') +sys.path.insert(0, glob.glob('../../lib/py/build/lib*')[0]) + +from tutorial import Calculator +from tutorial.ttypes import InvalidOperation, Operation + +from shared.ttypes import SharedStruct + +from zope.interface import implements +from twisted.internet import reactor + +from thrift.transport import TTwisted +from thrift.protocol import TBinaryProtocol + + +class CalculatorHandler: + implements(Calculator.Iface) + + def __init__(self): + self.log = {} + + def ping(self): + print('ping()') + + def add(self, n1, n2): + print('add(%d,%d)' % (n1, n2)) + return n1 + n2 + + def calculate(self, logid, work): + print('calculate(%d, %r)' % (logid, work)) + + if work.op == Operation.ADD: + val = work.num1 + work.num2 + elif work.op == Operation.SUBTRACT: + val = work.num1 - work.num2 + elif work.op == Operation.MULTIPLY: + val = work.num1 * work.num2 + elif work.op == Operation.DIVIDE: + if work.num2 == 0: + x = InvalidOperation() + x.whatOp = work.op + x.why = 'Cannot divide by 0' + raise x + val = work.num1 / work.num2 + else: + x = InvalidOperation() + x.whatOp = work.op + x.why = 'Invalid operation' + raise x + + log = SharedStruct() + log.key = logid + log.value = '%d' % (val) + self.log[logid] = log + + return val + + def getStruct(self, key): + print('getStruct(%d)' % (key)) + return self.log[key] + + def zip(self): + print('zip()') + + +if __name__ == '__main__': + handler = CalculatorHandler() + processor = Calculator.Processor(handler) + pfactory = TBinaryProtocol.TBinaryProtocolFactory() + server = reactor.listenTCP( + 9090, + TTwisted.ThriftServerFactory(processor, pfactory), + interface="127.0.0.1") + reactor.run() diff --git a/src/jaegertracing/thrift/tutorial/py.twisted/PythonServer.tac b/src/jaegertracing/thrift/tutorial/py.twisted/PythonServer.tac new file mode 100755 index 000000000..0479636de --- /dev/null +++ b/src/jaegertracing/thrift/tutorial/py.twisted/PythonServer.tac @@ -0,0 +1,53 @@ +#!/usr/bin/env python + +# +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you 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 twisted.application import internet, service +from thrift.transport import TTwisted + +import glob +import sys +sys.path.append('gen-py.twisted') +sys.path.insert(0, glob.glob('../../lib/py/build/lib*')[0]) +from tutorial import Calculator +from PythonServer import CalculatorHandler +from thrift.protocol import TBinaryProtocol + + +def make_application(): + application = service.Application('CalcServer') + + handler = CalculatorHandler() + processor = Calculator.Processor(handler) + + serverFactory = TTwisted.ThriftServerFactory( + processor, + TBinaryProtocol.TBinaryProtocolFactory()) + + calcService = internet.TCPServer(9090, serverFactory) + + multiService = service.MultiService() + calcService.setServiceParent(multiService) + multiService.setServiceParent(application) + + return application + +if __name__ == '__main__': + application = make_application() diff --git a/src/jaegertracing/thrift/tutorial/py/Makefile.am b/src/jaegertracing/thrift/tutorial/py/Makefile.am new file mode 100755 index 000000000..7db816d3b --- /dev/null +++ b/src/jaegertracing/thrift/tutorial/py/Makefile.am @@ -0,0 +1,37 @@ +# +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you 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. +# + +gen-py/tutorial/Calculator.py gen-py/shared/SharedService.py: $(top_srcdir)/tutorial/tutorial.thrift + $(THRIFT) --gen py -r $< + +all-local: gen-py/tutorial/Calculator.py + +tutorialserver: all + ${PYTHON} PythonServer.py + +tutorialclient: all + ${PYTHON} PythonClient.py + +clean-local: + $(RM) -r gen-* + +EXTRA_DIST = \ + setup.cfg \ + PythonServer.py \ + PythonClient.py diff --git a/src/jaegertracing/thrift/tutorial/py/PythonClient.py b/src/jaegertracing/thrift/tutorial/py/PythonClient.py new file mode 100755 index 000000000..a6c196641 --- /dev/null +++ b/src/jaegertracing/thrift/tutorial/py/PythonClient.py @@ -0,0 +1,89 @@ +#!/usr/bin/env python + +# +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you 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. +# + +import sys +import glob +sys.path.append('gen-py') +sys.path.insert(0, glob.glob('../../lib/py/build/lib*')[0]) + +from tutorial import Calculator +from tutorial.ttypes import InvalidOperation, Operation, Work + +from thrift import Thrift +from thrift.transport import TSocket +from thrift.transport import TTransport +from thrift.protocol import TBinaryProtocol + + +def main(): + # Make socket + transport = TSocket.TSocket('localhost', 9090) + + # Buffering is critical. Raw sockets are very slow + transport = TTransport.TBufferedTransport(transport) + + # Wrap in a protocol + protocol = TBinaryProtocol.TBinaryProtocol(transport) + + # Create a client to use the protocol encoder + client = Calculator.Client(protocol) + + # Connect! + transport.open() + + client.ping() + print('ping()') + + sum_ = client.add(1, 1) + print('1+1=%d' % sum_) + + work = Work() + + work.op = Operation.DIVIDE + work.num1 = 1 + work.num2 = 0 + + try: + quotient = client.calculate(1, work) + print('Whoa? You know how to divide by zero?') + print('FYI the answer is %d' % quotient) + except InvalidOperation as e: + print('InvalidOperation: %r' % e) + + work.op = Operation.SUBTRACT + work.num1 = 15 + work.num2 = 10 + + diff = client.calculate(1, work) + print('15-10=%d' % diff) + + log = client.getStruct(1) + print('Check log: %s' % log.value) + + # Close! + transport.close() + + +if __name__ == '__main__': + try: + main() + except Thrift.TException as tx: + print('%s' % tx.message) diff --git a/src/jaegertracing/thrift/tutorial/py/PythonServer.py b/src/jaegertracing/thrift/tutorial/py/PythonServer.py new file mode 100755 index 000000000..e6421ef08 --- /dev/null +++ b/src/jaegertracing/thrift/tutorial/py/PythonServer.py @@ -0,0 +1,103 @@ +#!/usr/bin/env python + +# +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you 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. +# + +import glob +import sys +sys.path.append('gen-py') +sys.path.insert(0, glob.glob('../../lib/py/build/lib*')[0]) + +from tutorial import Calculator +from tutorial.ttypes import InvalidOperation, Operation + +from shared.ttypes import SharedStruct + +from thrift.transport import TSocket +from thrift.transport import TTransport +from thrift.protocol import TBinaryProtocol +from thrift.server import TServer + + +class CalculatorHandler: + def __init__(self): + self.log = {} + + def ping(self): + print('ping()') + + def add(self, n1, n2): + print('add(%d,%d)' % (n1, n2)) + return n1 + n2 + + def calculate(self, logid, work): + print('calculate(%d, %r)' % (logid, work)) + + if work.op == Operation.ADD: + val = work.num1 + work.num2 + elif work.op == Operation.SUBTRACT: + val = work.num1 - work.num2 + elif work.op == Operation.MULTIPLY: + val = work.num1 * work.num2 + elif work.op == Operation.DIVIDE: + if work.num2 == 0: + x = InvalidOperation() + x.whatOp = work.op + x.why = 'Cannot divide by 0' + raise x + val = work.num1 / work.num2 + else: + x = InvalidOperation() + x.whatOp = work.op + x.why = 'Invalid operation' + raise x + + log = SharedStruct() + log.key = logid + log.value = '%d' % (val) + self.log[logid] = log + + return val + + def getStruct(self, key): + print('getStruct(%d)' % (key)) + return self.log[key] + + def zip(self): + print('zip()') + + +if __name__ == '__main__': + handler = CalculatorHandler() + processor = Calculator.Processor(handler) + transport = TSocket.TServerSocket(host='127.0.0.1', port=9090) + tfactory = TTransport.TBufferedTransportFactory() + pfactory = TBinaryProtocol.TBinaryProtocolFactory() + + server = TServer.TSimpleServer(processor, transport, tfactory, pfactory) + + # You could do one of these for a multithreaded server + # server = TServer.TThreadedServer( + # processor, transport, tfactory, pfactory) + # server = TServer.TThreadPoolServer( + # processor, transport, tfactory, pfactory) + + print('Starting the server...') + server.serve() + print('done.') diff --git a/src/jaegertracing/thrift/tutorial/py/setup.cfg b/src/jaegertracing/thrift/tutorial/py/setup.cfg new file mode 100644 index 000000000..2a7120a29 --- /dev/null +++ b/src/jaegertracing/thrift/tutorial/py/setup.cfg @@ -0,0 +1,2 @@ +[flake8] +ignore = E402 |