Related
I searched for this error a lot, but I only find some with more information behind that like "FATAL: ...". Mine has none. It only says
sqlalchemy.exc.OperationalError: (psycopg2.OperationalError)
I have a postgres database inside a docker container that has set his port to the standard 5432.
I've created the container with the following command:
docker run --name some-postgres -e POSTGRES_PASSWORD=mysecretpassword -p 5432:5432 -d postgres
It is clean so no database created. The API should automatically create them.
I'm using Pycharm IDE, maybe it has something todo with that.
Traceback (most recent call last):
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\uvicorn\protocols\http\h11_impl.py", line 373, in run_asgi
result = await app(self.scope, self.receive, self.send)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\uvicorn\middleware\proxy_headers.py", line 75, in __call__
return await self.app(scope, receive, send)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\uvicorn\middleware\debug.py", line 96, in __call__
raise exc from None
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\uvicorn\middleware\debug.py", line 93, in __call__
await self.app(scope, receive, inner_send)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\fastapi\applications.py", line 208, in __call__
await super().__call__(scope, receive, send)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\starlette\applications.py", line 112, in __call__
await self.middleware_stack(scope, receive, send)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\starlette\middleware\errors.py", line 181, in __call__
raise exc from None
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\starlette\middleware\errors.py", line 159, in __call__
await self.app(scope, receive, _send)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\starlette\exceptions.py", line 82, in __call__
raise exc from None
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\starlette\exceptions.py", line 71, in __call__
await self.app(scope, receive, sender)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\starlette\routing.py", line 580, in __call__
await route.handle(scope, receive, send)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\starlette\routing.py", line 241, in handle
await self.app(scope, receive, send)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\starlette\routing.py", line 52, in app
response = await func(request)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\fastapi\routing.py", line 226, in app
raw_response = await run_endpoint_function(
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\fastapi\routing.py", line 159, in run_endpoint_function
return await dependant.call(**values)
File "C:\Users\Veril\PycharmProjects\partyapp-python\app\routers\v1\users.py", line 31, in create_user
session.commit()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\session.py", line 1428, in commit
self._transaction.commit(_to_root=self.future)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\session.py", line 829, in commit
self._prepare_impl()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\session.py", line 808, in _prepare_impl
self.session.flush()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\session.py", line 3339, in flush
self._flush(objects)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\session.py", line 3479, in _flush
transaction.rollback(_capture_exception=True)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\util\langhelpers.py", line 70, in __exit__
compat.raise_(
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\util\compat.py", line 207, in raise_
raise exception
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\session.py", line 3439, in _flush
flush_context.execute()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\unitofwork.py", line 456, in execute
rec.execute(self)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\unitofwork.py", line 630, in execute
util.preloaded.orm_persistence.save_obj(
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\persistence.py", line 209, in save_obj
for (
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\persistence.py", line 370, in _organize_states_for_save
for state, dict_, mapper, connection in _connections_for_states(
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\persistence.py", line 1709, in _connections_for_states
connection = uowtransaction.transaction.connection(base_mapper)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\session.py", line 626, in connection
return self._connection_for_bind(bind, execution_options)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\session.py", line 735, in _connection_for_bind
conn = self._parent._connection_for_bind(bind, execution_options)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\session.py", line 747, in _connection_for_bind
conn = bind.connect()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\future\engine.py", line 419, in connect
return super(Engine, self).connect()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\engine\base.py", line 3194, in connect
return self._connection_cls(self, close_with_result=close_with_result)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\engine\base.py", line 96, in __init__
else engine.raw_connection()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\engine\base.py", line 3273, in raw_connection
return self._wrap_pool_connect(self.pool.connect, _connection)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\engine\base.py", line 3243, in _wrap_pool_connect
Connection._handle_dbapi_exception_noconnection(
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\engine\base.py", line 2097, in _handle_dbapi_exception_noconnection
util.raise_(
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\util\compat.py", line 207, in raise_
raise exception
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\engine\base.py", line 3240, in _wrap_pool_connect
return fn()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\pool\base.py", line 310, in connect
return _ConnectionFairy._checkout(self)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\pool\base.py", line 868, in _checkout
fairy = _ConnectionRecord.checkout(pool)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\pool\base.py", line 476, in checkout
rec = pool._do_get()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\pool\impl.py", line 146, in _do_get
self._dec_overflow()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\util\langhelpers.py", line 70, in __exit__
compat.raise_(
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\util\compat.py", line 207, in raise_
raise exception
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\pool\impl.py", line 143, in _do_get
return self._create_connection()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\pool\base.py", line 256, in _create_connection
return _ConnectionRecord(self)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\pool\base.py", line 371, in __init__
self.__connect()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\pool\base.py", line 666, in __connect
pool.logger.debug("Error on connect(): %s", e)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\util\langhelpers.py", line 70, in __exit__
compat.raise_(
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\util\compat.py", line 207, in raise_
raise exception
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\pool\base.py", line 661, in __connect
self.dbapi_connection = connection = pool._invoke_creator(self)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\engine\create.py", line 590, in connect
return dialect.connect(*cargs, **cparams)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\engine\default.py", line 584, in connect
return self.dbapi.connect(*cargs, **cparams)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\psycopg2\__init__.py", line 122, in connect
conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
sqlalchemy.exc.OperationalError: (psycopg2.OperationalError)
(Background on this error at: https://sqlalche.me/e/14/e3q8)
This is my error that i get. My code looks like this:
main.py:
import os
import uvicorn
if __name__ == '__main__':
port = int(os.getenv("PORT"))
uvicorn.run("main:app", host='0.0.0.0', port=port, reload=True, debug=True, workers=3)
app/main.py:
import os
from fastapi import FastAPI
from .database import engine
from .routers import v1
engine.init_db()
port = int(os.getenv("PORT")) #Port is 8000
app = FastAPI()
app.include_router(v1.router, prefix="/v1")
app/database/engine.py: (referenced in the file above)
import os
from fastapi.security import HTTPBearer
from sqlmodel import create_engine, SQLModel, Session
DATABASE_URL = "postgresql+psycopg2://postgres:mysecretpassword#localhost:5432"
engine = create_engine(DATABASE_URL, echo=True)
token_auth_scheme = HTTPBearer()
async def init_db():
async with engine.begin() as conn:
# await conn.run_sync(SQLModel.metadata.drop_all)
await conn.run_sync(SQLModel.metadata.create_all)
async def get_session():
session = Session(engine)
try:
yield session
finally:
session.close()
The route "users" inside routers/v1/users.py:
from typing import Optional
from fastapi import APIRouter, Depends, HTTPException, Query, Path, Response, status
from pydantic import ValidationError
from sqlalchemy.exc import IntegrityError
from sqlalchemy.sql.functions import concat
from sqlalchemy import func
from sqlmodel import Session, select, col
from starlette import status
from app.database import models
from app.database.authentication import VerifyToken
from app.database.engine import get_session, token_auth_scheme
router = APIRouter()
#router.post("", status_code=status.HTTP_201_CREATED, response_model=models.UserRead,
response_model_exclude_none=True, name="Create User", tags=["users"])
async def create_user(user_data: models.UserCreate,
session: Session = Depends(get_session)):
try:
new_user = models.User(**dict(user_data))
session.add(new_user)
session.commit()
session.refresh(new_user)
return new_user
except IntegrityError:
session.rollback()
raise HTTPException(
status_code=status.HTTP_409_CONFLICT, detail="IntegrityError")
except ValidationError:
session.rollback()
raise HTTPException(
status_code=status.HTTP_400_BAD_REQUEST, detail="ValidationError")
The models.User:
class UserBase(SQLModel):
id: str
username: Optional[str]
country_code: Optional[str]
phone: Optional[str]
class Config:
allow_population_by_field_name = True
class User(UserBase, table=True):
__tablename__ = 'users'
id: str = Field(primary_key=True)
username: Optional[str] = Field(sa_column=Column('username', VARCHAR(length=50), unique=True, default=None))
phone: Optional[str] = Field(sa_column=Column('phone', VARCHAR(length=20), unique=True, default=None))
I hope that this is everything you guys need to find something. If you need something else contact me.
Best regards
Colin
EDIT:
After I changed the link from `postgresql+psycopg2` to `postgresql+asyncpg` I get a new error:
ERROR: Exception in ASGI application
Traceback (most recent call last):
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\uvicorn\protocols\http\h11_impl.py", line 373, in run_asgi
result = await app(self.scope, self.receive, self.send)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\uvicorn\middleware\proxy_headers.py", line 75, in __call__
return await self.app(scope, receive, send)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\uvicorn\middleware\debug.py", line 96, in __call__
raise exc from None
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\uvicorn\middleware\debug.py", line 93, in __call__
await self.app(scope, receive, inner_send)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\fastapi\applications.py", line 208, in __call__
await super().__call__(scope, receive, send)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\starlette\applications.py", line 112, in __call__
await self.middleware_stack(scope, receive, send)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\starlette\middleware\errors.py", line 181, in __call__
raise exc from None
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\starlette\middleware\errors.py", line 159, in __call__
await self.app(scope, receive, _send)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\starlette\exceptions.py", line 82, in __call__
raise exc from None
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\starlette\exceptions.py", line 71, in __call__
await self.app(scope, receive, sender)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\starlette\routing.py", line 580, in __call__
await route.handle(scope, receive, send)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\starlette\routing.py", line 241, in handle
await self.app(scope, receive, send)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\starlette\routing.py", line 52, in app
response = await func(request)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\fastapi\routing.py", line 226, in app
raw_response = await run_endpoint_function(
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\fastapi\routing.py", line 159, in run_endpoint_function
return await dependant.call(**values)
File "C:\Users\Veril\PycharmProjects\partyapp-python\app\routers\v1\users.py", line 26, in create_user
session.commit()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\session.py", line 1428, in commit
self._transaction.commit(_to_root=self.future)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\session.py", line 829, in commit
self._prepare_impl()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\session.py", line 808, in _prepare_impl
self.session.flush()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\session.py", line 3339, in flush
self._flush(objects)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\session.py", line 3479, in _flush
transaction.rollback(_capture_exception=True)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\util\langhelpers.py", line 70, in __exit__
compat.raise_(
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\util\compat.py", line 207, in raise_
raise exception
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\session.py", line 3439, in _flush
flush_context.execute()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\unitofwork.py", line 456, in execute
rec.execute(self)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\unitofwork.py", line 630, in execute
util.preloaded.orm_persistence.save_obj(
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\persistence.py", line 209, in save_obj
for (
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\persistence.py", line 370, in _organize_states_for_save
for state, dict_, mapper, connection in _connections_for_states(
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\persistence.py", line 1709, in _connections_for_states
connection = uowtransaction.transaction.connection(base_mapper)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\session.py", line 626, in connection
return self._connection_for_bind(bind, execution_options)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\session.py", line 735, in _connection_for_bind
conn = self._parent._connection_for_bind(bind, execution_options)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\orm\session.py", line 747, in _connection_for_bind
conn = bind.connect()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\future\engine.py", line 419, in connect
return super(Engine, self).connect()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\engine\base.py", line 3194, in connect
return self._connection_cls(self, close_with_result=close_with_result)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\engine\base.py", line 96, in __init__
else engine.raw_connection()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\engine\base.py", line 3273, in raw_connection
return self._wrap_pool_connect(self.pool.connect, _connection)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\engine\base.py", line 3240, in _wrap_pool_connect
return fn()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\pool\base.py", line 310, in connect
return _ConnectionFairy._checkout(self)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\pool\base.py", line 868, in _checkout
fairy = _ConnectionRecord.checkout(pool)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\pool\base.py", line 476, in checkout
rec = pool._do_get()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\pool\impl.py", line 146, in _do_get
self._dec_overflow()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\util\langhelpers.py", line 70, in __exit__
compat.raise_(
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\util\compat.py", line 207, in raise_
raise exception
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\pool\impl.py", line 143, in _do_get
return self._create_connection()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\pool\base.py", line 256, in _create_connection
return _ConnectionRecord(self)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\pool\base.py", line 371, in __init__
self.__connect()
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\pool\base.py", line 666, in __connect
pool.logger.debug("Error on connect(): %s", e)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\util\langhelpers.py", line 70, in __exit__
compat.raise_(
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\util\compat.py", line 207, in raise_
raise exception
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\pool\base.py", line 661, in __connect
self.dbapi_connection = connection = pool._invoke_creator(self)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\engine\create.py", line 590, in connect
return dialect.connect(*cargs, **cparams)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\engine\default.py", line 584, in connect
return self.dbapi.connect(*cargs, **cparams)
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\dialects\postgresql\asyncpg.py", line 748, in connect
await_only(self.asyncpg.connect(*arg, **kw)),
File "C:\Users\Veril\PycharmProjects\partyapp-python\venv\lib\site-packages\sqlalchemy\util\_concurrency_py3k.py", line 61, in await_only
raise exc.MissingGreenlet(
sqlalchemy.exc.MissingGreenlet: greenlet_spawn has not been called; can't call await_() here. Was IO attempted in an unexpected place? (Background on this error at: https://sqlalche.me/e/14/xd2s)
EDIT 2:
If I use my local postgres database in docker i get this error. If I use my extern database from Heroku it works perfectly fine!
EDIT 3:
So apparently it won't work with my local docker postgres database. Now I am using my production database over heroku (so externally) and everything works with psycopg2. I didn't found the error why it won't let me use my local db but whatever.
Even though I can see that you are using default port, maybe this can help to somebody with the same problem.
For me the problem was in explicit port definition - as I'm running two different postgres DB and (both from containers), one of them I set to listen to 5433 port - and this gives me exact same problem, so instead
SQLALCHEMY_DATABASE_URL = "postgresql://postgres:password#localhost/fastapi"
I just put:
SQLALCHEMY_DATABASE_URL = "postgresql://postgres:password#localhost:5433/fastapi"
Problem solved right away.
So I have an image which I read the contents off of through .read() which is part of the UploadFile class and I believe it reads in bytes https://fastapi.tiangolo.com/tutorial/request-files/. To convert the bytes objects into bytea data type I used psycopg2.Binary() but I got an error message saying KeyError: '$fu'
This is my code for the portion that's reading off the bytes from the image and trying to store it in Postgresql through the bytea data type
image_array = []
for image in images_upload:
contents = await image.read()
image_array.append(contents)
# add image validation
for (permission, text, characteristics, image) in zip(p, c, t, image_array):
query = ("insert into images(permissions,text,characteristics,date_created,user_id,img)"
f"values('{permission}','{text}',"
f"'{characteristics}'"
f",{func.now()},{result[0]['id']}"
f",'{psycopg2.Binary(image)}')")
await database.execute(query=query)
Here's the trace
INFO: 127.0.0.1:53168 - "POST /add/?api_key=stringstring&texts=string&characteristics=string&permissions=string HTTP/1.1" 500 Internal Server Error
ERROR: Exception in ASGI application
Traceback (most recent call last):
File "/Users/admin/Library/Caches/pypoetry/virtualenvs/backend-DSfoN2Wn-py3.9/lib/python3.9/site-packages/uvicorn/protocols/http/h11_impl.py", line 396, in run_asgi
result = await app(self.scope, self.receive, self.send)
File "/Users/admin/Library/Caches/pypoetry/virtualenvs/backend-DSfoN2Wn-py3.9/lib/python3.9/site-packages/uvicorn/middleware/proxy_headers.py", line 45, in __call__
return await self.app(scope, receive, send)
File "/Users/admin/Library/Caches/pypoetry/virtualenvs/backend-DSfoN2Wn-py3.9/lib/python3.9/site-packages/fastapi/applications.py", line 199, in __call__
await super().__call__(scope, receive, send)
File "/Users/admin/Library/Caches/pypoetry/virtualenvs/backend-DSfoN2Wn-py3.9/lib/python3.9/site-packages/starlette/applications.py", line 111, in __call__
await self.middleware_stack(scope, receive, send)
File "/Users/admin/Library/Caches/pypoetry/virtualenvs/backend-DSfoN2Wn-py3.9/lib/python3.9/site-packages/starlette/middleware/errors.py", line 181, in __call__
raise exc from None
File "/Users/admin/Library/Caches/pypoetry/virtualenvs/backend-DSfoN2Wn-py3.9/lib/python3.9/site-packages/starlette/middleware/errors.py", line 159, in __call__
await self.app(scope, receive, _send)
File "/Users/admin/Library/Caches/pypoetry/virtualenvs/backend-DSfoN2Wn-py3.9/lib/python3.9/site-packages/starlette/exceptions.py", line 82, in __call__
raise exc from None
File "/Users/admin/Library/Caches/pypoetry/virtualenvs/backend-DSfoN2Wn-py3.9/lib/python3.9/site-packages/starlette/exceptions.py", line 71, in __call__
await self.app(scope, receive, sender)
File "/Users/admin/Library/Caches/pypoetry/virtualenvs/backend-DSfoN2Wn-py3.9/lib/python3.9/site-packages/starlette/routing.py", line 566, in __call__
await route.handle(scope, receive, send)
File "/Users/admin/Library/Caches/pypoetry/virtualenvs/backend-DSfoN2Wn-py3.9/lib/python3.9/site-packages/starlette/routing.py", line 227, in handle
await self.app(scope, receive, send)
File "/Users/admin/Library/Caches/pypoetry/virtualenvs/backend-DSfoN2Wn-py3.9/lib/python3.9/site-packages/starlette/routing.py", line 41, in app
response = await func(request)
File "/Users/admin/Library/Caches/pypoetry/virtualenvs/backend-DSfoN2Wn-py3.9/lib/python3.9/site-packages/fastapi/routing.py", line 201, in app
raw_response = await run_endpoint_function(
File "/Users/admin/Library/Caches/pypoetry/virtualenvs/backend-DSfoN2Wn-py3.9/lib/python3.9/site-packages/fastapi/routing.py", line 148, in run_endpoint_function
return await dependant.call(**values)
File "./app/controllers/add.py", line 49, in add_images
await database.execute(query=query)
File "/Users/admin/Library/Caches/pypoetry/virtualenvs/backend-DSfoN2Wn-py3.9/lib/python3.9/site-packages/databases/core.py", line 161, in execute
return await connection.execute(query, values)
File "/Users/admin/Library/Caches/pypoetry/virtualenvs/backend-DSfoN2Wn-py3.9/lib/python3.9/site-packages/databases/core.py", line 263, in execute
return await self._connection.execute(built_query)
File "/Users/admin/Library/Caches/pypoetry/virtualenvs/backend-DSfoN2Wn-py3.9/lib/python3.9/site-packages/databases/backends/postgres.py", line 188, in execute
query, args, result_columns = self._compile(query)
File "/Users/admin/Library/Caches/pypoetry/virtualenvs/backend-DSfoN2Wn-py3.9/lib/python3.9/site-packages/databases/backends/postgres.py", line 221, in _compile
compiled_query = compiled.string % mapping
KeyError: '$fu'
I got an error on my Cloud Run, in my log it said Broken Pipe error, and when I check it which line that got an error on my Code, it on my db2.comit(). My cloud run always run well from 6 month ago without any error, but now got this error.
So here are the detail from the log.
Traceback (most recent call last):
File "/usr/local/lib/python3.8/site-packages/uvicorn/protocols/http/httptools_impl.py", line 385, in run_asgi
result = await app(self.scope, self.receive, self.send)
File "/usr/local/lib/python3.8/site-packages/uvicorn/middleware/proxy_headers.py", line 45, in __call__
return await self.app(scope, receive, send)
File "/usr/local/lib/python3.8/site-packages/fastapi/applications.py", line 190, in __call__
await super().__call__(scope, receive, send)
File "/usr/local/lib/python3.8/site-packages/starlette/applications.py", line 111, in __call__
await self.middleware_stack(scope, receive, send)
File "/usr/local/lib/python3.8/site-packages/starlette/middleware/errors.py", line 181, in __call__
raise exc from None
File "/usr/local/lib/python3.8/site-packages/starlette/middleware/errors.py", line 159, in __call__
await self.app(scope, receive, _send)
File "/usr/local/lib/python3.8/site-packages/starlette/middleware/cors.py", line 78, in __call__
await self.app(scope, receive, send)
File "/usr/local/lib/python3.8/site-packages/starlette/exceptions.py", line 82, in __call__
raise exc from None
File "/usr/local/lib/python3.8/site-packages/starlette/exceptions.py", line 71, in __call__
await self.app(scope, receive, sender)
File "/usr/local/lib/python3.8/site-packages/starlette/routing.py", line 566, in __call__
await route.handle(scope, receive, send)
File "/usr/local/lib/python3.8/site-packages/starlette/routing.py", line 227, in handle
await self.app(scope, receive, send)
File "/usr/local/lib/python3.8/site-packages/starlette/routing.py", line 41, in app
response = await func(request)
File "/usr/local/lib/python3.8/site-packages/fastapi/routing.py", line 188, in app
raw_response = await run_endpoint_function(
File "/usr/local/lib/python3.8/site-packages/fastapi/routing.py", line 135, in run_endpoint_function
return await dependant.call(**values)
File "/app/api/endpoints.py", line 48, in detect
db2.commit()
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/session.py", line 1042, in commit
self.transaction.commit()
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/session.py", line 504, in commit
self._prepare_impl()
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/session.py", line 483, in _prepare_impl
self.session.flush()
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/session.py", line 2523, in flush
self._flush(objects)
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/session.py", line 2664, in _flush
transaction.rollback(_capture_exception=True)
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/util/langhelpers.py", line 68, in __exit__
compat.raise_(
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/util/compat.py", line 182, in raise_
raise exception
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/session.py", line 2624, in _flush
flush_context.execute()
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/unitofwork.py", line 422, in execute
rec.execute(self)
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/unitofwork.py", line 586, in execute
persistence.save_obj(
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/persistence.py", line 205, in save_obj
for (
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/persistence.py", line 373, in _organize_states_for_save
for state, dict_, mapper, connection in _connections_for_states(
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/persistence.py", line 1602, in _connections_for_states
connection = uowtransaction.transaction.connection(base_mapper)
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/session.py", line 314, in connection
return self._connection_for_bind(bind, execution_options)
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/session.py", line 421, in _connection_for_bind
conn = self._parent._connection_for_bind(bind, execution_options)
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/orm/session.py", line 433, in _connection_for_bind
conn = bind._contextual_connect()
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/engine/base.py", line 2304, in _contextual_connect
self._wrap_pool_connect(self.pool.connect, None),
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/engine/base.py", line 2338, in _wrap_pool_connect
return fn()
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/pool/base.py", line 364, in connect
return _ConnectionFairy._checkout(self)
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/pool/base.py", line 809, in _checkout
result = pool._dialect.do_ping(fairy.connection)
File "/usr/local/lib/python3.8/site-packages/sqlalchemy/engine/default.py", line 560, in do_ping
cursor.execute(self._dialect_specific_select_one)
File "/usr/local/lib/python3.8/site-packages/pg8000/core.py", line 340, in execute
self._c.execute_unnamed(self, "begin transaction")
File "/usr/local/lib/python3.8/site-packages/pg8000/core.py", line 1214, in execute_unnamed
self.handle_messages(cursor)
File "/usr/local/lib/python3.8/site-packages/pg8000/core.py", line 1377, in handle_messages
code, data_len = ci_unpack(self._read(5))
struct.error: unpack_from requires a buffer of at least 5 bytes for unpacking 5 bytes at offset 0 (actual buffer size is 0)
And this is my line of code that occurs the error.
except Exception as e: # noqa
log = orm.LogPredictStatus(customer_id=customer_id, status_code=500, car_attribute=car.dict(), price=None, source='TEST', created_at=time_zone_jakarta)
db2.add(log)
db2.commit()
raise HTTPException(
status_code=500,
detail=str(e),
)
I have a shell script that runs Python scripts and the shell script is run by a crontab upon startup. I had the shell script log the error into a logs file each time it is run. When run manually the Python scripts run fine and there are no errors, the Python scripts run Discord bots btw. However when I reboot my Raspberry Pi, and leave the crontab to run the shell script, I receive in error which is below:
For context, there are 3 Python scripts, each one is named "main.py" in there respective folders. Here's the shell script if you want to look at it:
#!/bin/bash
cd /home/pi/Desktop/logs
DATE="$(date "+%m%d%Y_%T")"
touch "log_file_$DATE"
LOGFILE=/home/pi/Desktop/logs/log_file_$DATE
(
echo "-------------$(date "+%m/%d/%Y %T") : Starting work----------------"
cd "/home/pi/Desktop/InviteBot-master/"
/home/pi/Python-3.8.5/python main.py &
cd "/home/pi/Desktop/CustomRoleBot-master"
/home/pi/Python-3.8.5/python main.py &
cd "/home/pi/Desktop/Private-channel-manager-master"
/home/pi/Python-3.8.5/python main.py &
) >& $LOGFILE
sleep 86400
echo "-------------$(date "+%m/%d/%Y %T") : Restarting----------------"
sudo reboot
and here's the full log output (I replaced the bot token with asterisks for the purpose of presenting it)
-------------11/04/2020 16:53:36 : Starting work----------------
Traceback (most recent call last):
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/connector.py", line 964, in _create_direct_connection
hosts = await asyncio.shield(self._resolve_host(
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/connector.py", line 829, in _resolve_host
addrs = await \
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/resolver.py", line 29, in resolve
infos = await self._loop.getaddrinfo(
File "/home/pi/Python-3.8.5/Lib/asyncio/base_events.py", line 825, in getaddrinfo
return await self.run_in_executor(
File "/home/pi/Python-3.8.5/Lib/concurrent/futures/thread.py", line 57, in run
result = self.fn(*self.args, **self.kwargs)
File "/home/pi/Python-3.8.5/Lib/socket.py", line 918, in getaddrinfo
for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -3] Temporary failure in name resolution
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "main.py", line 338, in <module>
client.run(TOKEN)
File "/home/pi/.local/lib/python3.8/site-packages/discord/client.py", line 678, in run
return future.result()
File "/home/pi/.local/lib/python3.8/site-packages/discord/client.py", line 658, in runner
await self.start(*args, **kwargs)
File "/home/pi/.local/lib/python3.8/site-packages/discord/client.py", line 621, in start
await self.login(*args, bot=bot)
File "/home/pi/.local/lib/python3.8/site-packages/discord/client.py", line 472, in login
await self.http.static_login(token.strip(), bot=bot)
File "/home/pi/.local/lib/python3.8/site-packages/discord/http.py", line 288, in static_login
data = await self.request(Route('GET', '/users/#me'))
File "/home/pi/.local/lib/python3.8/site-packages/discord/http.py", line 185, in request
async with self.__session.request(method, url, **kwargs) as r:
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/client.py", line 1012, in __aenter__
self._resp = await self._coro
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/client.py", line 480, in _request
conn = await self._connector.connect(
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/connector.py", line 523, in connect
proto = await self._create_connection(req, traces, timeout)
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/connector.py", line 858, in _create_connection
_, proto = await self._create_direct_connection(
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/connector.py", line 971, in _create_direct_connection
raise ClientConnectorError(req.connection_key, exc) from exc
aiohttp.client_exceptions.ClientConnectorError: Cannot connect to host discord.com:443 ssl:default [Temporary failure in name resolution]
Traceback (most recent call last):
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/connector.py", line 964, in _create_direct_connection
hosts = await asyncio.shield(self._resolve_host(
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/connector.py", line 829, in _resolve_host
addrs = await \
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/resolver.py", line 29, in resolve
infos = await self._loop.getaddrinfo(
File "/home/pi/Python-3.8.5/Lib/asyncio/base_events.py", line 825, in getaddrinfo
return await self.run_in_executor(
File "/home/pi/Python-3.8.5/Lib/concurrent/futures/thread.py", line 57, in run
result = self.fn(*self.args, **self.kwargs)
File "/home/pi/Python-3.8.5/Lib/socket.py", line 918, in getaddrinfo
for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -3] Temporary failure in name resolution
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "main.py", line 215, in <module>
client.run(TOKEN)
File "/home/pi/.local/lib/python3.8/site-packages/discord/client.py", line 678, in run
return future.result()
File "/home/pi/.local/lib/python3.8/site-packages/discord/client.py", line 658, in runner
await self.start(*args, **kwargs)
File "/home/pi/.local/lib/python3.8/site-packages/discord/client.py", line 621, in start
await self.login(*args, bot=bot)
File "/home/pi/.local/lib/python3.8/site-packages/discord/client.py", line 472, in login
await self.http.static_login(token.strip(), bot=bot)
File "/home/pi/.local/lib/python3.8/site-packages/discord/http.py", line 288, in static_login
data = await self.request(Route('GET', '/users/#me'))
File "/home/pi/.local/lib/python3.8/site-packages/discord/http.py", line 185, in request
async with self.__session.request(method, url, **kwargs) as r:
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/client.py", line 1012, in __aenter__
self._resp = await self._coro
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/client.py", line 480, in _request
conn = await self._connector.connect(
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/connector.py", line 523, in connect
proto = await self._create_connection(req, traces, timeout)
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/connector.py", line 858, in _create_connection
_, proto = await self._create_direct_connection(
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/connector.py", line 971, in _create_direct_connection
raise ClientConnectorError(req.connection_key, exc) from exc
aiohttp.client_exceptions.ClientConnectorError: Cannot connect to host discord.com:443 ssl:default [Temporary failure in name resolution]
Traceback (most recent call last):
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/connector.py", line 964, in _create_direct_connection
hosts = await asyncio.shield(self._resolve_host(
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/connector.py", line 829, in _resolve_host
addrs = await \
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/resolver.py", line 29, in resolve
infos = await self._loop.getaddrinfo(
File "/home/pi/Python-3.8.5/Lib/asyncio/base_events.py", line 825, in getaddrinfo
return await self.run_in_executor(
File "/home/pi/Python-3.8.5/Lib/concurrent/futures/thread.py", line 57, in run
result = self.fn(*self.args, **self.kwargs)
File "/home/pi/Python-3.8.5/Lib/socket.py", line 918, in getaddrinfo
for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -3] Temporary failure in name resolution
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "main.py", line 1134, in <module>
client.run('*****')
File "/home/pi/.local/lib/python3.8/site-packages/discord/client.py", line 678, in run
return future.result()
File "/home/pi/.local/lib/python3.8/site-packages/discord/client.py", line 658, in runner
await self.start(*args, **kwargs)
File "/home/pi/.local/lib/python3.8/site-packages/discord/client.py", line 621, in start
await self.login(*args, bot=bot)
File "/home/pi/.local/lib/python3.8/site-packages/discord/client.py", line 472, in login
await self.http.static_login(token.strip(), bot=bot)
File "/home/pi/.local/lib/python3.8/site-packages/discord/http.py", line 288, in static_login
data = await self.request(Route('GET', '/users/#me'))
File "/home/pi/.local/lib/python3.8/site-packages/discord/http.py", line 185, in request
async with self.__session.request(method, url, **kwargs) as r:
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/client.py", line 1012, in __aenter__
self._resp = await self._coro
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/client.py", line 480, in _request
conn = await self._connector.connect(
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/connector.py", line 523, in connect
proto = await self._create_connection(req, traces, timeout)
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/connector.py", line 858, in _create_connection
_, proto = await self._create_direct_connection(
File "/home/pi/.local/lib/python3.8/site-packages/aiohttp/connector.py", line 971, in _create_direct_connection
raise ClientConnectorError(req.connection_key, exc) from exc
aiohttp.client_exceptions.ClientConnectorError: Cannot connect to host discord.com:443 ssl:default [Temporary failure in name resolution]
Thank you in advance for any help I can receive with this problem.
I figured out that I was getting the error because my network was not yet up. So I changed my shell script by adding this line of code before I executed the python scripts:
while ! (ping -c 1 -W 1 1.2.3.4 | grep -q 'statistics'); do
echo "Waiting for 1.2.3.4 - network interface might be down..."
sleep 1
done
I got the suggestion from here: https://www.raspberrypi.org/forums/viewtopic.php?t=148716
and the code from here: Waiting for network link to be up before continuing in bash
WebSocket gets disconnected in django channels2. And before it following error was thrown.
2018-06-03 19:05:40,238 - ERROR - server - Exception inside
application: [Errno -2] Name or service not known File
"/usr/lib/python3.5/asyncio/tasks.py", line 241, in _step
result = coro.throw(exc) File "/home/lusine/projects/DjangoTest/venv/lib/python3.5/site-packages/channels/consumer.py",
line 54, in __call__
await await_many_dispatch([receive, self.channel_receive], self.dispatch) File
"/home/lusine/projects/DjangoTest/venv/lib/python3.5/site-packages/channels/utils.py",
line 57, in await_many_dispatch
await task File "/usr/lib/python3.5/asyncio/futures.py", line 363, in __iter__
return self.result() # May raise too. File "/usr/lib/python3.5/asyncio/futures.py", line 274, in result
raise self._exception File "/home/lusine/projects/DjangoTest/venv/lib/python3.5/site-packages/channels/utils.py",
line 49, in await_many_dispatch
result = task.result() File "/usr/lib/python3.5/asyncio/futures.py", line 274, in result
raise self._exception File "/usr/lib/python3.5/asyncio/tasks.py", line 239, in _step
result = coro.send(None) File "/home/lusine/projects/DjangoTest/venv/lib/python3.5/site-packages/channels_redis/core.py",
line 184, in receive
self.receive_loop_task.result() File "/usr/lib/python3.5/asyncio/futures.py", line 274, in result
raise self._exception File "/usr/lib/python3.5/asyncio/tasks.py", line 239, in _step
result = coro.send(None) File "/home/lusine/projects/DjangoTest/venv/lib/python3.5/site-packages/channels_redis/core.py",
line 202, in receive_loop
real_channel, message = await self.receive_single(general_channel) File
"/home/lusine/projects/DjangoTest/venv/lib/python3.5/site-packages/channels_redis/core.py",
line 218, in receive_single
async with self.connection(index) as connection: File "/home/lusine/projects/DjangoTest/venv/lib/python3.5/site-packages/channels_redis/core.py",
line 447, in __aenter__
self.conn = await aioredis.create_redis(**self.kwargs) File "/home/lusine/projects/DjangoTest/venv/lib/python3.5/site-packages/aioredis/commands/__init__.py",
line 177, in create_redis
loop=loop) File "/home/lusine/projects/DjangoTest/venv/lib/python3.5/site-packages/aioredis/connection.py",
line 107, in create_connection
timeout, loop=loop) File "/usr/lib/python3.5/asyncio/tasks.py", line 373, in wait_for
return (yield from fut) File "/home/lusine/projects/DjangoTest/venv/lib/python3.5/site-packages/aioredis/stream.py",
line 19, in open_connection
lambda: protocol, host, port, **kwds) File "/usr/lib/python3.5/asyncio/base_events.py", line 651, in
create_connection
infos = f1.result() File "/usr/lib/python3.5/asyncio/futures.py", line 274, in result
raise self._exception File "/usr/lib/python3.5/concurrent/futures/thread.py", line 55, in run
result = self.fn(*self.args, **self.kwargs) File "/usr/lib/python3.5/socket.py", line 732, in getaddrinfo
for res in _socket.getaddrinfo(host, port, family, type, proto, flags): [Errno -2] Name or service not known
It looks like you are using some incorrect address, probably Redis hostname.