I am trying to install Airflow 2.0.1 with ansible on CentOS8 machine. Python version 3.8.1. I made pip 20.2.4 as suggested in Airflow docs.
I am using postgresql and airflow db check is successful. But the db init task gives the following error. I tried airflow db init manually but the result was the same:
ERROR - Failed to add operation for GET /api/v1/connections
Traceback (most recent call last):
File "/opt/airflow/lib/python3.8/site-packages/connexion/apis/abstract.py", line 209, in add_paths
self.add_operation(path, method)
File "/opt/airflow/lib/python3.8/site-packages/connexion/apis/abstract.py", line 162, in add_operation
operation = make_operation(
File "/opt/airflow/lib/python3.8/site-packages/connexion/operations/__init__.py", line 8, in make_operation
return spec.operation_cls.from_spec(spec, *args, **kwargs)
File "/opt/airflow/lib/python3.8/site-packages/connexion/operations/openapi.py", line 128, in from_spec
return cls(
File "/opt/airflow/lib/python3.8/site-packages/connexion/operations/openapi.py", line 75, in __init__
super(OpenAPIOperation, self).__init__(
File "/opt/airflow/lib/python3.8/site-packages/connexion/operations/abstract.py", line 96, in __init__
self._resolution = resolver.resolve(self)
File "/opt/airflow/lib/python3.8/site-packages/connexion/resolver.py", line 40, in resolve
return Resolution(self.resolve_function_from_operation_id(operation_id), operation_id)
File "/opt/airflow/lib/python3.8/site-packages/connexion/resolver.py", line 66, in resolve_function_from_operation_id
raise ResolverError(str(e), sys.exc_info())
connexion.exceptions.ResolverError: <ResolverError: columns>
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/opt/airflow/bin/airflow", line 8, in <module>
sys.exit(main())
File "/opt/airflow/lib/python3.8/site-packages/airflow/__main__.py", line 40, in main
args.func(args)
File "/opt/airflow/lib/python3.8/site-packages/airflow/cli/cli_parser.py", line 48, in command
return func(*args, **kwargs)
File "/opt/airflow/lib/python3.8/site-packages/airflow/cli/commands/db_command.py", line 31, in initdb
db.initdb()
File "/opt/airflow/lib/python3.8/site-packages/airflow/utils/db.py", line 549, in initdb
upgradedb()
File "/opt/airflow/lib/python3.8/site-packages/airflow/utils/db.py", line 684, in upgradedb
command.upgrade(config, 'heads')
File "/opt/airflow/lib/python3.8/site-packages/alembic/command.py", line 294, in upgrade
script.run_env()
File "/opt/airflow/lib/python3.8/site-packages/alembic/script/base.py", line 490, in run_env
util.load_python_file(self.dir, "env.py")
File "/opt/airflow/lib/python3.8/site-packages/alembic/util/pyfiles.py", line 97, in load_python_file
module = load_module_py(module_id, path)
File "/opt/airflow/lib/python3.8/site-packages/alembic/util/compat.py", line 182, in load_module_py
spec.loader.exec_module(module)
File "<frozen importlib._bootstrap_external>", line 783, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/opt/airflow/lib/python3.8/site-packages/airflow/migrations/env.py", line 108, in <module>
run_migrations_online()
File "/opt/airflow/lib/python3.8/site-packages/airflow/migrations/env.py", line 102, in run_migrations_online
context.run_migrations()
File "<string>", line 8, in run_migrations
File "/opt/airflow/lib/python3.8/site-packages/alembic/runtime/environment.py", line 813, in run_migrations
self.get_context().run_migrations(**kw)
File "/opt/airflow/lib/python3.8/site-packages/alembic/runtime/migration.py", line 561, in run_migrations
step.migration_fn(**kw)
File "/opt/airflow/lib/python3.8/site-packages/airflow/migrations/versions/2c6edca13270_resource_based_permissions.py", line 314, in upgrade
remap_permissions()
File "/opt/airflow/lib/python3.8/site-packages/airflow/migrations/versions/2c6edca13270_resource_based_permissions.py", line 289, in remap_permissions
appbuilder = create_app(config={'FAB_UPDATE_PERMS': False}).appbuilder
File "/opt/airflow/lib/python3.8/site-packages/airflow/www/app.py", line 120, in create_app
init_api_connexion(flask_app)
File "/opt/airflow/lib/python3.8/site-packages/airflow/www/extensions/init_views.py", line 171, in init_api_connexion
api_bp = connexion_app.add_api(
File "/opt/airflow/lib/python3.8/site-packages/connexion/apps/flask_app.py", line 57, in add_api
api = super(FlaskApp, self).add_api(specification, **kwargs)
File "/opt/airflow/lib/python3.8/site-packages/connexion/apps/abstract.py", line 144, in add_api
api = self.api_cls(specification,
File "/opt/airflow/lib/python3.8/site-packages/connexion/apis/abstract.py", line 111, in __init__
self.add_paths()
File "/opt/airflow/lib/python3.8/site-packages/connexion/apis/abstract.py", line 216, in add_paths
self._handle_add_operation_error(path, method, err.exc_info)
File "/opt/airflow/lib/python3.8/site-packages/connexion/apis/abstract.py", line 231, in _handle_add_operation_error
raise value.with_traceback(traceback)
File "/opt/airflow/lib/python3.8/site-packages/connexion/resolver.py", line 61, in resolve_function_from_operation_id
return self.function_resolver(operation_id)
File "/opt/airflow/lib/python3.8/site-packages/connexion/utils.py", line 111, in get_function_from_name
module = importlib.import_module(module_name)
File "/usr/local/lib/python3.8/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
File "<frozen importlib._bootstrap>", line 991, in _find_and_load
File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 783, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/opt/airflow/lib/python3.8/site-packages/airflow/api_connexion/endpoints/connection_endpoint.py", line 26, in <module>
from airflow.api_connexion.schemas.connection_schema import (
File "/opt/airflow/lib/python3.8/site-packages/airflow/api_connexion/schemas/connection_schema.py", line 42, in <module>
class ConnectionSchema(ConnectionCollectionItemSchema): # pylint: disable=too-many-ancestors
File "/opt/airflow/lib/python3.8/site-packages/marshmallow/schema.py", line 121, in __new__
klass._declared_fields = mcs.get_declared_fields(
File "/opt/airflow/lib/python3.8/site-packages/marshmallow_sqlalchemy/schema/sqlalchemy_schema.py", line 94, in get_declared_fields
fields.update(mcs.get_auto_fields(fields, converter, opts, dict_cls))
File "/opt/airflow/lib/python3.8/site-packages/marshmallow_sqlalchemy/schema/sqlalchemy_schema.py", line 104, in get_auto_fields
{
File "/opt/airflow/lib/python3.8/site-packages/marshmallow_sqlalchemy/schema/sqlalchemy_schema.py", line 105, in <dictcomp>
field_name: field.create_field(
File "/opt/airflow/lib/python3.8/site-packages/marshmallow_sqlalchemy/schema/sqlalchemy_schema.py", line 28, in create_field
return converter.field_for(model, column_name, **self.field_kwargs)
File "/opt/airflow/lib/python3.8/site-packages/marshmallow_sqlalchemy/convert.py", line 171, in field_for
return self.property2field(prop, **kwargs)
File "/opt/airflow/lib/python3.8/site-packages/marshmallow_sqlalchemy/convert.py", line 146, in property2field
field_class = field_class or self._get_field_class_for_property(prop)
File "/opt/airflow/lib/python3.8/site-packages/marshmallow_sqlalchemy/convert.py", line 210, in _get_field_class_for_property
column = prop.columns[0]
File "/opt/airflow/lib/python3.8/site-packages/sqlalchemy/util/langhelpers.py", line 1220, in __getattr__
return self._fallback_getattr(key)
File "/opt/airflow/lib/python3.8/site-packages/sqlalchemy/util/langhelpers.py", line 1194, in _fallback_getattr
raise AttributeError(key)
AttributeError: columns
I'm having the same issue, temp fix was to use sqlalchemy < 1.4. Maybe that works for you.
What Worked for me is setting AIRFLOW_HOME and AIRFLOW__CORE__SQL_ALCHEMY_CONN and pip install SQLAlchemy==1.3.24
For me and Airflow 2.3.1 upgrading marshmallow-sqlalchemy helped.
pip install -U marshmallow-sqlalchemy
I set the AIRFLOW_HOME and AIRFLOW__CORE__SQL_ALCHEMY_CONN environment before run airflow db init.
Playbook version
environment:
AIRFLOW_HOME: "{{ airflow_app_home }}"
AIRFLOW__CORE__SQL_ALCHEMY_CONN: "{{ airflow_database_conn }}"
Related
Am trying to execute Jupyter notebook from command line. Am currently using the docker image provided in below link
https://hub.docker.com/r/jupyter/pyspark-notebook
When i try to execute below in command line it fails.
jupyter nbconvert --to notebook --ExecutePreprocessor.kernel_name=PySpark --ExecutePreprocessor.timeout=3600 --execute notebooks/sample-notebook.ipynb
Below is the error message
[NbConvertApp] Converting notebook notebooks/sample-notebook.ipynb to notebook
Traceback (most recent call last):
File "/opt/conda/bin/jupyter-nbconvert", line 11, in <module>
sys.exit(main())
File "/opt/conda/lib/python3.7/site-packages/jupyter_core/application.py", line 270, in launch_instance
return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
File "/opt/conda/lib/python3.7/site-packages/traitlets/config/application.py", line 664, in launch_instance
app.start()
File "/opt/conda/lib/python3.7/site-packages/nbconvert/nbconvertapp.py", line 340, in start
self.convert_notebooks()
File "/opt/conda/lib/python3.7/site-packages/nbconvert/nbconvertapp.py", line 510, in convert_notebooks
self.convert_single_notebook(notebook_filename)
File "/opt/conda/lib/python3.7/site-packages/nbconvert/nbconvertapp.py", line 481, in convert_single_notebook
output, resources = self.export_single_notebook(notebook_filename, resources, input_buffer=input_buffer)
File "/opt/conda/lib/python3.7/site-packages/nbconvert/nbconvertapp.py", line 410, in export_single_notebook
output, resources = self.exporter.from_filename(notebook_filename, resources=resources)
File "/opt/conda/lib/python3.7/site-packages/nbconvert/exporters/exporter.py", line 179, in from_filename
return self.from_file(f, resources=resources, **kw)
File "/opt/conda/lib/python3.7/site-packages/nbconvert/exporters/exporter.py", line 197, in from_file
return self.from_notebook_node(nbformat.read(file_stream, as_version=4), resources=resources, **kw)
File "/opt/conda/lib/python3.7/site-packages/nbconvert/exporters/notebook.py", line 32, in from_notebook_node
nb_copy, resources = super(NotebookExporter, self).from_notebook_node(nb, resources, **kw)
File "/opt/conda/lib/python3.7/site-packages/nbconvert/exporters/exporter.py", line 139, in from_notebook_node
nb_copy, resources = self._preprocess(nb_copy, resources)
File "/opt/conda/lib/python3.7/site-packages/nbconvert/exporters/exporter.py", line 316, in _preprocess
nbc, resc = preprocessor(nbc, resc)
File "/opt/conda/lib/python3.7/site-packages/nbconvert/preprocessors/base.py", line 47, in __call__
return self.preprocess(nb, resources)
File "/opt/conda/lib/python3.7/site-packages/nbconvert/preprocessors/execute.py", line 403, in preprocess
with self.setup_preprocessor(nb, resources, km=km):
File "/opt/conda/lib/python3.7/contextlib.py", line 112, in __enter__
return next(self.gen)
File "/opt/conda/lib/python3.7/site-packages/nbconvert/preprocessors/execute.py", line 345, in setup_preprocessor
self.km, self.kc = self.start_new_kernel(**kwargs)
File "/opt/conda/lib/python3.7/site-packages/nbconvert/preprocessors/execute.py", line 291, in start_new_kernel
km.start_kernel(extra_arguments=self.extra_arguments, **kwargs)
File "/opt/conda/lib/python3.7/site-packages/jupyter_client/manager.py", line 301, in start_kernel
kernel_cmd, kw = self.pre_start_kernel(**kw)
File "/opt/conda/lib/python3.7/site-packages/jupyter_client/manager.py", line 254, in pre_start_kernel
kernel_cmd = self.format_kernel_cmd(extra_arguments=extra_arguments)
File "/opt/conda/lib/python3.7/site-packages/jupyter_client/manager.py", line 178, in format_kernel_cmd
cmd = self.kernel_spec.argv + extra_arguments
File "/opt/conda/lib/python3.7/site-packages/jupyter_client/manager.py", line 84, in kernel_spec
self._kernel_spec = self.kernel_spec_manager.get_kernel_spec(self.kernel_name)
File "/opt/conda/lib/python3.7/site-packages/jupyter_client/kernelspec.py", line 235, in get_kernel_spec
raise NoSuchKernel(kernel_name)
jupyter_client.kernelspec.NoSuchKernel: No such kernel named PySpark
I am tryging to implement django social auth, and to do that I did pip install social-auth-app-django, then I went on to add social_django to my INSTALLED_APPS. After that when I am running the app, I am getting the following error (I am submitting the entire traceback):
Traceback (most recent call last):
File "c:\users\edgar\appdata\local\programs\python\python35\lib\threading.py", line 914, in _bootstrap_inner
self.run()
File "c:\users\edgar\appdata\local\programs\python\python35\lib\threading.py", line 862, in run
self._target(*self._args, **self._kwargs)
File "C:\Users\Edgar\venvs\internet-lead\lib\site-packages\django\utils\autoreload.py", line 54, in wrapper
fn(*args, **kwargs)
File "C:\Users\Edgar\venvs\internet-lead\lib\site-packages\django\core\management\commands\runserver.py", line 109, in inner_run
autoreload.raise_last_exception()
File "C:\Users\Edgar\venvs\internet-lead\lib\site-packages\django\utils\autoreload.py", line 77, in raise_last_exception
raise _exception[1]
File "C:\Users\Edgar\venvs\internet-lead\lib\site-packages\django\core\management\__init__.py", line 337, in execute
autoreload.check_errors(django.setup)()
File "C:\Users\Edgar\venvs\internet-lead\lib\site-packages\django\utils\autoreload.py", line 54, in wrapper
fn(*args, **kwargs)
File "C:\Users\Edgar\venvs\internet-lead\lib\site-packages\django\__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "C:\Users\Edgar\venvs\internet-lead\lib\site-packages\django\apps\registry.py", line 114, in populate
app_config.import_models()
File "C:\Users\Edgar\venvs\internet-lead\lib\site-packages\django\apps\config.py", line 211, in import_models
self.models_module = import_module(models_module_name)
File "c:\users\edgar\appdata\local\programs\python\python35\lib\importlib\__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 986, in _gcd_import
File "<frozen importlib._bootstrap>", line 969, in _find_and_load
File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 665, in exec_module
File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
File "C:\Users\Edgar\venvs\internet-lead\lib\site-packages\social_django\models.py", line 11, in <module>
from .storage import DjangoUserMixin, DjangoAssociationMixin, \
File "C:\Users\Edgar\venvs\internet-lead\lib\site-packages\social_django\storage.py", line 9, in <module>
from social_core.storage import UserMixin, AssociationMixin, NonceMixin, \
File "C:\Users\Edgar\venvs\internet-lead\lib\site-packages\social_core\storage.py", line 12, in <module>
from openid.association import Association as OpenIdAssociation
File "C:\Users\Edgar\venvs\internet-lead\lib\site-packages\openid\__init__.py", line 52, in <module>
if len(version_info) != 3:
TypeError: object of type 'map' has no len()
If I comment out the 'social_django' from the INSTALLED_APPS, everything works fine again.
My python version is 3.5.2, and Django 2.2.12. Any ideas ? I am lost...
I faced this error , I fixed it by uninstalling both python-openid and python3-openid :
pip uninstall python-openid
pip uninstall python3-openid
then re-install python3-openid using:
pip install python3-openid
One question of this type is previously asked but is not very helpful. I am using version Python3.8 in Windows 10 OS. I am getting an error, KeyError: 'sapi5'. dont know why this error is occurring. Please have a look at the below code given . My code is-
import pyttsx3
engine = pyttsx3.init('sapi5')
voices = engine.getProperty('voices')
engine.setProperty('voices', voices[0].id)
The Error is quite big. can anyone help me?
Traceback (most recent call last):
File "C:\Users\hp\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pyttsx3\__init__.py", line 20, in init
eng = _activeEngines[driverName]
File "C:\Users\hp\AppData\Local\Programs\Python\Python38-32\lib\weakref.py", line 131, in __getitem__
o = self.data[key]()
KeyError: 'sapi5'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\hp\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pyttsx3\drivers\sapi5.py", line 3, in <module>
from comtypes.gen import SpeechLib # comtypes
ImportError: cannot import name 'SpeechLib' from 'comtypes.gen' (C:\Users\hp\AppData\Local\Programs\Python\Python38-32\lib\site-packages\comtypes\gen\__init__.py)
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\hp\AppData\Local\Programs\Python\Python38-32\lib\ctypes\__init__.py", line 123, in WINFUNCTYPE
return _win_functype_cache[(restype, argtypes, flags)]
KeyError: (<class 'ctypes.HRESULT'>, (<class 'ctypes.c_long'>, <class 'comtypes.automation.tagVARIANT'>, <class 'comtypes.automation.tagVARIANT'>, <class 'ctypes.c_long'>, <class 'ctypes.c_long'>), 0)
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "g:/saurav/Assistant/VA/MyAssistant.py", line 9, in <module>
engine = pyttsx3.init('sapi5')
File "C:\Users\hp\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pyttsx3\__init__.py", line 22, in init
eng = Engine(driverName, debug)
File "C:\Users\hp\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pyttsx3\engine.py", line 30, in __init__
self.proxy = driver.DriverProxy(weakref.proxy(self), driverName, debug)
File "C:\Users\hp\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pyttsx3\driver.py", line 50, in __init__
self._module = importlib.import_module(name)
File "C:\Users\hp\AppData\Local\Programs\Python\Python38-32\lib\importlib\__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
File "<frozen importlib._bootstrap>", line 991, in _find_and_load
File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 783, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "C:\Users\hp\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pyttsx3\drivers\sapi5.py", line 6, in <module>
engine = comtypes.client.CreateObject("SAPI.SpVoice")
File "C:\Users\hp\AppData\Local\Programs\Python\Python38-32\lib\site-packages\comtypes\client\__init__.py", line 250, in CreateObject
return _manage(obj, clsid, interface=interface)
File "C:\Users\hp\AppData\Local\Programs\Python\Python38-32\lib\site-packages\comtypes\client\__init__.py", line 188, in _manage
obj = GetBestInterface(obj)
File "C:\Users\hp\AppData\Local\Programs\Python\Python38-32\lib\site-packages\comtypes\client\__init__.py", line 110, in GetBestInterface
mod = GetModule(tlib)
File "C:\Users\hp\AppData\Local\Programs\Python\Python38-32\lib\site-packages\comtypes\client\_generate.py", line 110, in GetModule
mod = _CreateWrapper(tlib, pathname)
File "C:\Users\hp\AppData\Local\Programs\Python\Python38-32\lib\site-packages\comtypes\client\_generate.py", line 184, in _CreateWrapper
mod = _my_import(fullname)
File "C:\Users\hp\AppData\Local\Programs\Python\Python38-32\lib\site-packages\comtypes\client\_generate.py", line 24, in _my_import
return __import__(fullname, globals(), locals(), ['DUMMY'])
File "C:\Users\hp\AppData\Local\Programs\Python\Python38-32\lib\site-packages\comtypes\gen\_C866CA3A_32F7_11D2_9602_00C04F8EE628_0_5_4.py", line 140, in <module>
ISpeechRecoGrammar._methods_ = [
File "C:\Users\hp\AppData\Local\Programs\Python\Python38-32\lib\site-packages\comtypes\__init__.py", line 329, in __setattr__
self._make_methods(value)
File "C:\Users\hp\AppData\Local\Programs\Python\Python38-32\lib\site-packages\comtypes\__init__.py", line 698, in _make_methods
prototype = WINFUNCTYPE(restype, *argtypes)
File "C:\Users\hp\AppData\Local\Programs\Python\Python38-32\lib\ctypes\__init__.py", line 125, in WINFUNCTYPE
class WinFunctionType(_CFuncPtr):
TypeError: item 2 in _argtypes_ passes a union by value, which is unsupported.
first uninstall pyttsx3 using following command
pip uninstall pyttsx3
Then install pyttsx3 version 2.6 using following command
pip install pyttsx3==2.6
When I run unittests with django-simple-history==1.6.0, it runs fine but with
django-simple-history==1.9.0 it breaks the unittests.
Any ideas how to fix this?
Creating test database for alias 'default'...
Traceback (most recent call last):
File "manage.py", line 12, in <module>
execute_from_command_line(sys.argv)
File "/home/me/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 338, in execute_from_command_line
utility.execute()
File "/home/me/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 330, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/me/venv/lib/python2.7/site-packages/django/core/management/commands/test.py", line 30, in run_from_argv
super(Command, self).run_from_argv(argv)
File "/home/me/venv/lib/python2.7/site-packages/django/core/management/base.py", line 390, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/me/venv/lib/python2.7/site-packages/django/core/management/commands/test.py", line 74, in execute
super(Command, self).execute(*args, **options)
File "/home/me/venv/lib/python2.7/site-packages/django/core/management/base.py", line 441, in execute
output = self.handle(*args, **options)
File "/home/me/venv/lib/python2.7/site-packages/django/core/management/commands/test.py", line 90, in handle
failures = test_runner.run_tests(test_labels)
File "/home/me/venv/lib/python2.7/site-packages/django/test/runner.py", line 210, in run_tests
old_config = self.setup_databases()
File "/home/me/venv/lib/python2.7/site-packages/django/test/runner.py", line 166, in setup_databases
**kwargs
File "/home/me/venv/lib/python2.7/site-packages/django/test/runner.py", line 370, in setup_databases
serialize=connection.settings_dict.get("TEST", {}).get("SERIALIZE", True),
File "/home/me/venv/lib/python2.7/site-packages/django/db/backends/base/creation.py", line 376, in create_test_db
self.connection._test_serialized_contents = self.serialize_db_to_string()
File "/home/me/venv/lib/python2.7/site-packages/django/db/backends/base/creation.py", line 413, in serialize_db_to_string
serializers.serialize("json", get_objects(), indent=None, stream=out)
File "/home/me/venv/lib/python2.7/site-packages/django/core/serializers/__init__.py", line 129, in serialize
s.serialize(queryset, **options)
File "/home/me/venv/lib/python2.7/site-packages/django/core/serializers/base.py", line 52, in serialize
for obj in queryset:
File "/home/me/venv/lib/python2.7/site-packages/django/db/backends/base/creation.py", line 409, in get_objects
for obj in queryset.iterator():
File "/home/me/venv/lib/python2.7/site-packages/django/db/models/query.py", line 238, in iterator
results = compiler.execute_sql()
File "/home/me/venv/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 829, in execute_sql
cursor.execute(sql, params)
File "/home/me/venv/lib/python2.7/site-packages/django/db/backends/utils.py", line 64, in execute
return self.cursor.execute(sql, params)
File "/home/me/venv/lib/python2.7/site-packages/django/db/utils.py", line 97, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "/home/me/venv/lib/python2.7/site-packages/django/db/backends/utils.py", line 64, in execute
return self.cursor.execute(sql, params)
File "/home/me/venv/lib/python2.7/site-packages/django/db/backends/sqlite3/base.py", line 318, in execute
return Database.Cursor.execute(self, query, params)
django.db.utils.OperationalError: no such column: myapp_historicalbook.history_change_reason
I got it. I had to remove my migration folder in order to be able to run the unit tests.
my ipython notebook functionality stop working.
If I do
ipython notebook
the console just hangs forever with no debug output.
I have already tried reinstalling ipython but no success.
Also, if I start normal ipython everything seems fine.
Does anybody have a clue how to solve this? I suspect some lock file is still there but how can I find out what is exactly going wrong?
also if I force interrupt I get the following stack trace
^C^CTraceback (most recent call last):
File "/home/lfiaschi/anaconda/bin/ipython", line 9, in <module>
load_entry_point('ipython==1.2.1', 'console_scripts', 'ipython')()
File "/home/lfiaschi/anaconda/lib/python2.7/site-packages/IPython/__init__.py", line 118, in start_ipython
return launch_new_instance(argv=argv, **kwargs)
File "/home/lfiaschi/anaconda/lib/python2.7/site-packages/IPython/config/application.py", line 544, in launch_instance
app.initialize(argv)
File "<string>", line 2, in initialize
File "/home/lfiaschi/anaconda/lib/python2.7/site-packages/IPython/config/application.py", line 89, in catch_config_error
return method(app, *args, **kwargs)
File "/home/lfiaschi/anaconda/lib/python2.7/site-packages/IPython/terminal/ipapp.py", line 312, in initialize
super(TerminalIPythonApp, self).initialize(argv)
File "<string>", line 2, in initialize
File "/home/lfiaschi/anaconda/lib/python2.7/site-packages/IPython/config/application.py", line 89, in catch_config_error
return method(app, *args, **kwargs)
File "/home/lfiaschi/anaconda/lib/python2.7/site-packages/IPython/core/application.py", line 373, in initialize
self.parse_command_line(argv)
File "/home/lfiaschi/anaconda/lib/python2.7/site-packages/IPython/terminal/ipapp.py", line 307, in parse_command_line
return super(TerminalIPythonApp, self).parse_command_line(argv)
File "<string>", line 2, in parse_command_line
File "/home/lfiaschi/anaconda/lib/python2.7/site-packages/IPython/config/application.py", line 89, in catch_config_error
return method(app, *args, **kwargs)
File "/home/lfiaschi/anaconda/lib/python2.7/site-packages/IPython/config/application.py", line 474, in parse_command_line
return self.initialize_subcommand(subc, subargv)
File "<string>", line 2, in initialize_subcommand
File "/home/lfiaschi/anaconda/lib/python2.7/site-packages/IPython/config/application.py", line 89, in catch_config_error
return method(app, *args, **kwargs)
File "/home/lfiaschi/anaconda/lib/python2.7/site-packages/IPython/config/application.py", line 405, in initialize_subcommand
subapp = import_item(subapp)
File "/home/lfiaschi/anaconda/lib/python2.7/site-packages/IPython/utils/importstring.py", line 42, in import_item
module = __import__(package, fromlist=[obj])
File "/home/lfiaschi/anaconda/lib/python2.7/site-packages/IPython/html/notebookapp.py", line 64, in <module>
from .services.kernels.kernelmanager import MappingKernelManager
File "/home/lfiaschi/anaconda/lib/python2.7/site-packages/IPython/html/services/kernels/kernelmanager.py", line 21, in <module>
from IPython.kernel.multikernelmanager import MultiKernelManager
File "/home/lfiaschi/anaconda/lib/python2.7/site-packages/IPython/kernel/__init__.py", line 6, in <module>
from .connect import *
File "/home/lfiaschi/anaconda/lib/python2.7/site-packages/IPython/kernel/connect.py", line 39, in <module>
from IPython.utils.localinterfaces import LOCALHOST
File "/home/lfiaschi/anaconda/lib/python2.7/site-packages/IPython/utils/localinterfaces.py", line 43, in <module>
PUBLIC_IPS = socket.gethostbyname_ex(socket.gethostname() + '.local')[2]
KeyboardInterrupt
I had the same problem in Linux/Ubuntu. This also hanged spyder.
Workaround for me:
(1) Look at host name of computer
cat /etc/hostname
which gives e.g. my-laptop
(2) Ensure that /etc/hosts contains the following entry
127.0.0.1 my-laptop my-laptop.local
because ipython looks for a 'local' extension too.
And fire up again ipython notebook or spyder. This worked for me for spyder, when it was hanging at:
PUBLIC_IPS = socket.gethostbyname_ex(socket.gethostname() + '.local')[2]