The following error is getting while attempting to run a sample Python Flask application.
Traceback (most recent call last):
File "/home/bineeth/Projects/python/xcontent/bin/flask", line 7, in <module>
from flask.cli import main
File "/home/bineeth/Projects/python/xcontent/lib/python3.5/site-packages/flask/__init__.py", line 18, in <module>
from werkzeug.exceptions import abort
File "/home/bineeth/Projects/python/xcontent/lib/python3.5/site-packages/werkzeug/__init__.py", line 152, in <module>
__import__('werkzeug.exceptions')
File "/home/bineeth/Projects/python/xcontent/lib/python3.5/site-packages/werkzeug/exceptions.py", line 66, in <module>
from werkzeug.http import HTTP_STATUS_CODES
File "/home/bineeth/Projects/python/xcontent/lib/python3.5/site-packages/werkzeug/http.py", line 31, in <module>
from werkzeug.datastructures import (# noqa
File "/home/bineeth/Projects/python/xcontent/lib/python3.5/site-packages/werkzeug/datastructures.py", line 24, in <module>
from werkzeug.http import dump_options_header, dump_header, generate_etag, \
ImportError: cannot import name 'dump_options_header'
Following is the source code;
from flask import Flask
app = Flask(__name__)
#app.route('/ping')
def ping():
return {'status':'completed'}
if __name__ == '__main__':
app.run(debug=False)
I am using Python 3 and LiClipse IDE. Also Linux Mint is the Operating System.
Appreciate your valuable help in this regard.
Related
I'm automating my EC2 instances with Patch Manager and I'm getting this error.
Error loading patching payloadfailed to run commands: exit status 156
The error output logs are these:
/usr/bin/python3
/usr/bin/apt-get
Reading package lists...
Building dependency tree...
Reading state information...
python3-apt is already the newest version (2.3.0ubuntu2).
0 upgraded, 0 newly installed, 0 to remove and 8 not upgraded.
Using python binary: 'python3'
Using Python Version: Python 3.10.4
/usr/bin/curl
/usr/bin/wget
05/29/2022 01:11:51 root [INFO]: Downloading payload from https://s3.dualstack.sa-east-1.amazonaws.com/aws-ssm-sa-east-1/patchbaselineoperations/linux/payloads/patch-baseline-operations-1.86.tar.gz
05/29/2022 01:11:52 root [INFO]: Attempting to import entrance file os_selector
05/29/2022 01:11:52 root [ERROR]: Error loading entrance module.
Traceback (most recent call last):
File "/var/log/amazon/ssm/patch-baseline-operations/common_startup_entrance.py", line 154, in execute
entrance_module = __import__(module_name)
File "/var/log/amazon/ssm/patch-baseline-operations/os_selector.py", line 11, in <module>
import common_os_selector_methods
File "/var/log/amazon/ssm/patch-baseline-operations/common_os_selector_methods.py", line 11, in <module>
from patch_common.baseline_override import load_baseline_override
File "/var/log/amazon/ssm/patch-baseline-operations/patch_common/baseline_override.py", line 6, in <module>
from patch_common.downloader import download_file, load_json_file, is_access_denied
File "/var/log/amazon/ssm/patch-baseline-operations/patch_common/downloader.py", line 1, in <module>
import boto3
File "/var/log/amazon/ssm/patch-baseline-operations/boto3/__init__.py", line 16, in <module>
from boto3.session import Session
File "/var/log/amazon/ssm/patch-baseline-operations/boto3/session.py", line 17, in <module>
import botocore.session
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/session.py", line 29, in <module>
import botocore.configloader
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/configloader.py", line 19, in <module>
from botocore.compat import six
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/compat.py", line 25, in <module>
from botocore.exceptions import MD5UnavailableError
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/exceptions.py", line 15, in <module>
from botocore.vendored import requests
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/vendored/requests/__init__.py", line 58, in <module>
from . import utils
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/vendored/requests/utils.py", line 26, in <module>
from .compat import parse_http_list as _parse_list_header
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/vendored/requests/compat.py", line 7, in <module>
from .packages import chardet
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/vendored/requests/packages/__init__.py", line 3, in <module>
from . import urllib3
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/vendored/requests/packages/urllib3/__init__.py", line 10, in <module>
from .connectionpool import (
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/vendored/requests/packages/urllib3/connectionpool.py", line 38, in <module>
from .response import HTTPResponse
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/vendored/requests/packages/urllib3/response.py", line 9, in <module>
from ._collections import HTTPHeaderDict
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/vendored/requests/packages/urllib3/_collections.py", line 1, in <module>
from collections import Mapping, MutableMapping
ImportError: cannot import name 'Mapping' from 'collections' (/usr/lib/python3.10/collections/__init__.py)
05/29/2022 01:11:52 root [ERROR]: cannot import name 'Mapping' from 'collections' (/usr/lib/python3.10/collections/__init__.py)
Traceback (most recent call last):
File "/var/log/amazon/ssm/patch-baseline-operations/common_startup_entrance.py", line 154, in execute
entrance_module = __import__(module_name)
File "/var/log/amazon/ssm/patch-baseline-operations/os_selector.py", line 11, in <module>
import common_os_selector_methods
File "/var/log/amazon/ssm/patch-baseline-operations/common_os_selector_methods.py", line 11, in <module>
from patch_common.baseline_override import load_baseline_override
File "/var/log/amazon/ssm/patch-baseline-operations/patch_common/baseline_override.py", line 6, in <module>
from patch_common.downloader import download_file, load_json_file, is_access_denied
File "/var/log/amazon/ssm/patch-baseline-operations/patch_common/downloader.py", line 1, in <module>
import boto3
File "/var/log/amazon/ssm/patch-baseline-operations/boto3/__init__.py", line 16, in <module>
from boto3.session import Session
File "/var/log/amazon/ssm/patch-baseline-operations/boto3/session.py", line 17, in <module>
import botocore.session
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/session.py", line 29, in <module>
import botocore.configloader
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/configloader.py", line 19, in <module>
from botocore.compat import six
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/compat.py", line 25, in <module>
from botocore.exceptions import MD5UnavailableError
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/exceptions.py", line 15, in <module>
from botocore.vendored import requests
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/vendored/requests/__init__.py", line 58, in <module>
from . import utils
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/vendored/requests/utils.py", line 26, in <module>
from .compat import parse_http_list as _parse_list_header
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/vendored/requests/compat.py", line 7, in <module>
from .packages import chardet
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/vendored/requests/packages/__init__.py", line 3, in <module>
from . import urllib3
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/vendored/requests/packages/urllib3/__init__.py", line 10, in <module>
from .connectionpool import (
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/vendored/requests/packages/urllib3/connectionpool.py", line 38, in <module>
from .response import HTTPResponse
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/vendored/requests/packages/urllib3/response.py", line 9, in <module>
from ._collections import HTTPHeaderDict
File "/var/log/amazon/ssm/patch-baseline-operations/botocore/vendored/requests/packages/urllib3/_collections.py", line 1, in <module>
from collections import Mapping, MutableMapping
ImportError: cannot import name 'Mapping' from 'collections' (/usr/lib/python3.10/collections/__init__.py)
Does anyone have an idea what it could be?
What's the Ubuntu version being used here?
Looking at the Python version (Python 3.10.4) in the error logs, that target instance appears to be running Ubuntu 22.04, which is not yet supported by Patch Manager.
Below is the link for the supported operating systems in Patch Manager prerequisites documentation:
https://docs.aws.amazon.com/systems-manager/latest/userguide/patch-manager-prerequisites.html
when i want do an import django i get an error
ubuntu 18.04 with a reverse proxy (nginx) and uwsgi (mode emperor actived) in virtual env with python 3.6.3 and latest django 2.2.5
test.py:
import os
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "testproject.settings")
import django
print("test")'
when i run python3 test.py i get :
(venv) :~/testproject/testproject/testproject$ python3.6 test.py
Traceback (most recent call last):
File "test.py", line 3, in <module>
from django.http import HttpResponse
File "/home/lukas/testproject/venv/lib/python3.6/site-packages/django/__init__.py", line 1, in <module>
from django.utils.version import get_version
File "/home/lukas/testproject/venv/lib/python3.6/site-packages/django/utils/version.py", line 4, in <module>
import subprocess
File "/usr/lib/python3.6/subprocess.py", line 140, in <module>
import threading
File "/usr/lib/python3.6/threading.py", line 7, in <module>
from traceback import format_exc as _format_exc
File "/usr/lib/python3.6/traceback.py", line 5, in <module>
import linecache
File "/home/lukas/testproject/venv/lib/python3.6/linecache.py", line 11, in <module>
import tokenize
File "/home/lukas/testproject/venv/lib/python3.6/tokenize.py", line 35, in <module>
from token import *
File "/home/lukas/testproject/testproject/testproject/token.py", line 1, in <module>
from django.contrib.auth.tokens import PasswordResetTokenGenerator
File "/home/lukas/testproject/venv/lib/python3.6/site-packages/django/contrib/auth/__init__.py", line 4, in <module>
from django.apps import apps as django_apps
File "/home/lukas/testproject/venv/lib/python3.6/site-packages/django/apps/__init__.py", line 2, in <module>
from .registry import apps
File "/home/lukas/testproject/venv/lib/python3.6/site-packages/django/apps/registry.py", line 426, in <module>
apps = Apps(installed_apps=None)
File "/home/lukas/testproject/venv/lib/python3.6/site-packages/django/apps/registry.py", line 46, in __init__
self.ready_event = threading.Event()
AttributeError: module 'threading' has no attribute 'Event'
i have the same error on python3 shell when i do import django whereas django have been installed with pip3 install and production mode is ok and developement mode with runserver is ok too.
can you help me, i m lost...
Do you have, by any chance, a token module in you django project?
As the python path is modified to prefer local modules rather than other pre-defined modules, the from token import * instruction will import from your module instead of the python lib one.
Try renaming your local modules to avoid collision with builtin python modules.
After upgrading my Ubuntu desktop to 18.04 from 16.04, the django's virtualenv refuses to start:
(.djangoenv) mw#desktop:~/theapp$ python manage.py runserver
Traceback (most recent call last):
File "manage.py", line 8, in <module>
from django.core.management import execute_from_command_line
File "/home/mw/.djangoenv/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 10, in <module>
from django.apps import apps
File "/home/mw/.djangoenv/local/lib/python2.7/site-packages/django/apps/__init__.py", line 1, in <module>
from .config import AppConfig # NOQA
File "/home/mw/.djangoenv/local/lib/python2.7/site-packages/django/apps/config.py", line 4, in <module>
from django.core.exceptions import AppRegistryNotReady, ImproperlyConfigured
File "/home/mw/.djangoenv/local/lib/python2.7/site-packages/django/core/exceptions.py", line 5, in <module>
from django.utils.encoding import force_text
File "/home/mw/.djangoenv/local/lib/python2.7/site-packages/django/utils/encoding.py", line 10, in <module>
from django.utils.functional import Promise
File "/home/mw/.djangoenv/local/lib/python2.7/site-packages/django/utils/functional.py", line 1, in <module>
import copy
File "/usr/lib/python2.7/copy.py", line 52, in <module>
import weakref
File "/usr/lib/python2.7/weakref.py", line 14, in <module>
from _weakref import (
ImportError: cannot import name _remove_dead_weakref
On the djangoenv and outside it
$ python --version :
`Python 2.7.12`
Hoping to resolve the issue, I also install Python 2.7.16 on the desktop, so I get:
$ python2.7 --version
Python 2.7.16
Also when I try to install new virtualenv, I get the same error:
$ virtualenv .blaenv
Running virtualenv with interpreter /home/mw/.djangoenv/bin/python2
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/virtualenv.py", line 21, in <module>
import logging
File "/usr/lib/python2.7/logging/__init__.py", line 26, in <module>
import sys, os, time, cStringIO, traceback, warnings, weakref, collections
File "/usr/lib/python2.7/weakref.py", line 14, in <module>
from _weakref import (
ImportError: cannot import name _remove_dead_weakref
Answers to the same error in other contexts did not help and my search led to no more clues.
So really appreciate your hints.
As per https://askubuntu.com/questions/981663/python2-7-broken-by-weakref-import-error-please-help you probably need to recreate your virtualenv. I suspect your problem here is that you need to deactivate your current env before you try to make the new one, in order to ensure that your system python2 interpreter is the one running the virtualenv command.
I get the following error when instancing my Django app as a lambda function using Zappa.
[1549659279288] Instancing..
[1549659279532] cannot import name 'models': ImportError
Traceback (most recent call last):
File "/var/task/handler.py", line 580, in lambda_handler
return LambdaHandler.lambda_handler(event, context)
File "/var/task/handler.py", line 245, in lambda_handler
handler = cls()
File "/var/task/handler.py", line 151, in __init__
wsgi_app_function = get_django_wsgi(self.settings.DJANGO_SETTINGS)
File "/var/task/zappa/ext/django_zappa.py", line 9, in get_django_wsgi
from django.core.wsgi import get_wsgi_application
File "/var/task/django/core/wsgi.py", line 2, in <module>
from django.core.handlers.wsgi import WSGIHandler
File "/var/task/django/core/handlers/wsgi.py", line 8, in <module>
from django.core.handlers import base
File "/var/task/django/core/handlers/base.py", line 7, in <module>
from django.urls import get_resolver, set_urlconf
File "/var/task/django/urls/__init__.py", line 1, in <module>
from .base import (
File "/var/task/django/urls/base.py", line 8, in <module>
from .exceptions import NoReverseMatch, Resolver404
File "/var/task/django/urls/exceptions.py", line 1, in <module>
from django.http import Http404
File "/var/task/django/http/__init__.py", line 5, in <module>
from django.http.response import (
File "/var/task/django/http/response.py", line 13, in <module>
from django.core.serializers.json import DjangoJSONEncoder
File "/var/task/django/core/serializers/__init__.py", line 23, in <module>
from django.core.serializers.base import SerializerDoesNotExist
File "/var/task/django/core/serializers/base.py", line 6, in <module>
from django.db import models
ImportError: cannot import name 'models'
I have tried running the app locally using,
python manage.py runserver
and it works fine locally.
However, I get the above error when the app is deployed to a lambda function.
I'm using Django version 2.0.10, Python 3.6 along with an AWS Aurora RDS.
I expect the lambda function instance without errors in the same way as it does locally.
Invoke zappa to keep packaged zip after deploy and check folder structure or try to run the project from that folder.
Did you add Django to requirements file? As i recall Zappa rebuilds lambda package from a fresh virtual environment, installs requirements.txt and applies your folder.
Or check carefully cloudwatch logs for import errors. There are import errors that show up only when the container is refreshed after a deploy, that will not show up for every lambda invocations.
I need to package a (rather simple) django application into a standalone executable on windows. After some failed attempts with py2exe (I really don't understand why everybody recommends it for django, it seems extremely complicated to set up) I tried pyinstaller. It does package the application without complaining, but if I try to run it using myapp.exe runserver localhost:8000, I am getting the following error:
Traceback (most recent call last):
File "<string>", line 5, in <module>
File "c:\python27\lib\site-packages\PyInstaller-2.1-py2.7.egg\PyInstaller\loader\pyi_importers.py", line 270, in load_
module
exec(bytecode, module.__dict__)
File "...\build\ck\out00-PYZ.pyz\django.test", line 5, in <module>
File "c:\python27\lib\site-packages\PyInstaller-2.1-py2.7.egg\PyInstaller\loader\pyi_importers.py", line 270, in load_
module
exec(bytecode, module.__dict__)
File "...\build\ck\out00-PYZ.pyz\django.test.client", line 21, in <module>
File "c:\python27\lib\site-packages\PyInstaller-2.1-py2.7.egg\PyInstaller\loader\pyi_importers.py", line 270, in load_
module
exec(bytecode, module.__dict__)
File "...\build\ck\out00-PYZ.pyz\django.db", line 11, in <module>
File "...\build\ck\out00-PYZ.pyz\django.conf", line 52, in __getattr__
File "...\build\ck\out00-PYZ.pyz\django.conf", line 45, in _setup
django.core.exceptions.ImproperlyConfigured: Requested setting DATABASES, but settings are not configured. You must eith
er define the environment variable DJANGO_SETTINGS_MODULE or call settings.configure() before accessing settings.
My manage.py script looks like this:
#!/usr/bin/env python
import os
import sys
import Cookie
import django.test
import HTMLParser
from django.conf import settings
if __name__ == "__main__":
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "myapp.settings")
from django.core.management import execute_from_command_line
execute_from_command_line(sys.argv)
Why does it not recognize the environment variable and how can I fix that?
I solved it by importing django.test after the line
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "myapp.settings")