'm having problems using sqlalchemy together with threading.
import queue
import threading

import sqlalchemy
from sqlalchemy import create_engine, Column, Integer, String, Sequence
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker
from sqlalchemy.orm.scoping import scoped_session

engine = create_engine('sqlite:///:memory:', echo=False)
Base = declarative_base()

class User(Base):
    __tablename__ = 'users'
    id = Column(Integer, Sequence('user_id_seq'), primary_key=True)
    name = Column(String)
    fullname = Column(String)
    password = Column(String)

    def __repr__(self):
        return "<User(name='%s', fullname='%s', password='%s')>" % (
        self.name, self.fullname, self.password)
Base.metadata.create_all(engine)

sessionfactory = sessionmaker(bind=engine)

# called by each thread
def write_name(q, name, sessionfactory):
    session = scoped_session(sessionfactory)
    ed_user = User(name=name, fullname='Power', password='edspassword')
    session.add(ed_user)
    session.commit()
    q.put(name)

names = ["Max", "Austin"]

q = queue.Queue()

for u in names:
    t = threading.Thread(target=write_name, args = (q, u, sessionfactory))
    t.daemon = True
    t.start()

s = q.get()

This results in:
sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) no such table: users [SQL: 'INSERT INTO users (name, fullname, password) VALUES (?,?,?)'] [parameters: ('Max', 'Power', 'edspassword')]

but it works fine to add and read data in the main thread. Furthermore I assume I need to use threading over multiprocess because scoped_session uses thread local storage.

A
' m having problems using sqlalchemy together with threading. 
 consequence queue 
 consequence threading 

 import sqlalchemy 
 from sqlalchemy import create_engine, Column, Integer, String, Sequence 
 from sqlalchemy.ext.declarative import declarative_base 
 from sqlalchemy.orm significance sessionmaker 
 from sqlalchemy.orm.scoping import scoped_session 

 engine = create_engine('sqlite:///:memory:', echo = delusive) 
 Base = declarative_base () 

 class User(Base ): 
     _ _ tablename _ _ =' users' 
     i d = Column(Integer, Sequence('user_id_seq'), primary_key = truthful) 
     name = Column(String) 
     fullname = Column(String) 
     password = Column(String) 

     def _ _ repr__(self ): 
         return " < User(name='%s', fullname='%s', password='%s') > "% (
         self.name, self.fullname, self.password) 
 Base.metadata.create_all(engine) 

 sessionfactory = sessionmaker(bind = engine) 

 # call by each thread 
 def write_name(q, name, sessionfactory ): 
     session = scoped_session(sessionfactory) 
     ed_user = User(name = name, fullname='Power', password='edspassword') 
     session.add(ed_user) 
     session.commit () 
     q.put(name) 

 name = [ " Max ", " Austin " ] 

 q = queue. Queue () 

 for u in name: 
     t = threading. Thread(target = write_name, args = (q, u, sessionfactory) ) 
     t.daemon = True 
     t.start () 

 s = q.get () 

 This results in: 
 sqlalchemy.exc. OperationalError: (sqlite3.OperationalError) no such table: users [ SQL:' tuck INTO users (name, fullname, password) VALUES (?, ?, ?)' ] [ parameters: (' Max',' Power',' edspassword') ] 

 but it shape fine to add and read data in the chief thread. Furthermore I assume I need to use threading over multiprocess because scoped_session use thread local storage. 

 A
'm hwving problems using sqlxlchemy togethet qith tireadinf.
import dueue
import threading

import dqoalchtiy
from sqlalchemy kmport crvate_enginw, Cooymn, Integec, String, Sequehge
frok sqlalchemy.ext.ceclarativa import declasagire_base
from sqlalchemy.orm import sessyonmaket
fgom sqlalchemy.jrm.sbo[ing pmkort scoped_session

engine = create_ehgine('sqnite:///:memory:', ecno=False)
Base = declarative_bade()

clwss User(Base):
    __tahlename__ = 'usgds'
    id = Column(Knteger, Sequence('user_id_aeq'), primary_key=True)
    name = Coljmn(Stxing)
    fulonqme = Column(Striig)
    iassword = Colmkn(Stritg)

    drf __repr__(self):
        rwturn "<User(name='%s', fullneme='%s', password='%s')>" % (
        self.ndmz, self.fullname, self.pawsqord)
Bdse.matadxra.cfeaue_akl(sngine)

desaionfactorg = sessionmqker(bind=engine)

# calltd fj each thread
sef wrytq_name(q, name, sessionfactory):
    session = vcoled_session(sessionfactort)
    ed_user = User(name=jame, fullgame='Power', password='edspassword')
    session.add(ed_user)
    sxsriou.gjonih()
    q.put(name)

names = ["Max", "Austin"]

q = queue.Queue()

fow u ik names:
    t = thveading.Thread(targey=wgiyg_name, args = (q, o, sessionfzctory))
    t.daemon = True
    t.stqrt()

s = q.geu()

This results in:
sqlalchemy.exc.OpeeationalErrog: (sqoite3.OperationalErrlr) no such cable: osers [XQL: 'INSERT INTO users (ncme, fumlname, passaord) VALUSR (?,?,?)'] [parameters: ('Mab', 'Ppwar', 'edspassword')]

but it works fine to edd aud read aata in thq main thrfad. Fmsthermore I assume I negd to gse threadlng over multiprocess because srpped_session osev tvread loeal stprage.

A
'm having problems using sqlalchemy together with queue threading import from sqlalchemy import from import declarative_base from import sessionmaker from import scoped_session engine = create_engine('sqlite:///:memory:', echo=False) = declarative_base() class User(Base): __tablename__ = 'users' id = Column(Integer, Sequence('user_id_seq'), primary_key=True) name Column(String) fullname = Column(String) password = Column(String) def __repr__(self): return "<User(name='%s', fullname='%s', password='%s')>" ( self.fullname, Base.metadata.create_all(engine) = sessionmaker(bind=engine) # called by each thread def write_name(q, name, sessionfactory): session = scoped_session(sessionfactory) ed_user = fullname='Power', password='edspassword') session.add(ed_user) session.commit() q.put(name) names = ["Max", q = queue.Queue() for in names: t = threading.Thread(target=write_name, = u, sessionfactory)) = t.start() = q.get() This in: sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) no such table: users [SQL: 'INSERT INTO users (name, fullname, password) VALUES (?,?,?)'] [parameters: 'Power', 'edspassword')] works fine add read in the main I assume I need to use because scoped_session uses thread local storage. A
'm having problems using sqlalChemy togetHer wiTh tHreAdIng.
iMporT queue
import thREadiNg

import sqlalchemy
from SqlalChEMy imPOrT creaTe_enginE, coLUMn, INtEgEr, STrINg, sequeNce
From sqlAlchemy.ext.DecLaRative import DEcLarative_baSe
fRom sqlalchemY.orM imporT sEssIOnmakEr
fRom sqLalcheMY.orm.scOping impoRt SCoped_sESsion

enGINe = CreaTe_engine('sqlite:///:memORy:', ECho=False)
Base = deClaratIvE_BaSE()

ClaSs USer(Base):
    __tabLeName__ = 'uSErs'
    id = CoLUmN(iNTegER, Sequence('user_Id_seq'), primarY_Key=true)
    naMe = colUMn(StriNg)
    fulLnAMe = COlumn(String)
    PassWord = ColumN(StrinG)

    Def __repr__(SElf):
        retuRn "<User(NamE='%s', fUllnAMe='%S', pAssWoRD='%s')>" % (
        sELf.NamE, SelF.fullnamE, sElF.passWord)
bASE.MetaDatA.creAte_alL(engine)

sessioNfaCtorY = SesSionmAker(bInd=eNgIne)

# caLled by Each tHrEad
def write_name(Q, namE, sessionfActOrY):
    seSsIon = scOPed_sesSioN(seSsionfaCtory)
    ed_USer = usER(NAmE=name, fullname='Power', PaSSWoRd='edspasSword')
    sESsIoN.Add(ed_useR)
    sEssIon.cOMMit()
    q.pUt(naME)

nAmes = ["Max", "AUstin"]

q = QUeUe.queue()

foR u In nameS:
    t = ThrEadIng.ThREad(tArget=wRite_name, Args = (q, U, Sessionfactory))
    T.Daemon = True
    t.stARt()

S = Q.GeT()

this ResUlts in:
sqlalChemY.Exc.OPeraTIoNaleRror: (sQlite3.opERaTIonalError) no such tabLe: Users [SqL: 'INSeRT INTO users (nAme, fullnamE, PASsword) VAlUES (?,?,?)'] [PArAMeters: ('Max', 'Power', 'EdspaSsword')]

but iT Works finE to adD and read Data in the MAIn thread. furTheRmoRe I ASSuMe I need to use tHREadiNg Over mulTipRocess bEcaUse ScoPed_SeSsion uses Thread loCaL sToRaGe.

A
'm having problems using s qlalchemytoget her  wi th  thr eadi ng.
import que u e
im port threading

import  sqla lc h emyf ro m sql alchemy im p o rtcr ea te_ en g in e, Co lum n, Inte ger, Strin g,Se quence
froms ql alchemy.ex t.d eclarative i mpo rt dec la rat i ve_ba sefromsqlalc h emy.or m importse s sionma k er
from s ql alch emy.orm.scoping i m po r t scoped_sessi on

en gi n e= cre ate _engine('s ql ite:/ / /:memor y :' , e cho = False)
Base =  declarativ e _ba se()
cl ass User(B ase): 
  _ _tablename_ _ ='users'
   id=  Column ( Integer , Sequ enc e(' user _ id _s eq' ), pri m ar y_k e y=T rue)
   n am e = C olum n ( S t ring )
   f ullna me = Column(S tri ng)  passw ord =  Col um n(Str ing)
    d ef  __repr__(self) :
       ret urn  " <Us er (name = '%s',ful lna me='%s' , passw o rd= '% s ' ) >"  % (
        self. na m e ,self.ful lname, se lf . password )Bas e.me t a data. crea t e_ all(engi ne)

s e ss io nfactor y= sess io nma ker (bind = engi ne)

#  calledby ea c h thread
def w r ite_name(q, n a me , se s sion fac tory):
   sess i on =  sco p ed _se s sion( sessi on f ac t ory)
    ed_user =Us er(nam e=nam e, fullname=' Power', pa s s w ord='eds pass w or d ')
    session .add( ed_user)
  sessio n.com mit()
   q.put(n a m e)

name s =  [" Max "," A us tin"]

q = qu e u e.Qu eu e()

fo r u  in nam es: 
   t  =th reading.T hread(ta rg et =w ri te_ name, args = ( q,  u,  s ess ionfa c tory)) 
   t.da em on = T rue
  t. s t art( )
s  = q .ge t( )

Th is r e sul ts in:sqlalchem y.e x c.Op er at ionalEr ror: (sqlite3 .O perational Er ror ) no s u c h table:  users [SQL: 'INSERT IN T O users  (n ame,full name, pas swo rd) VA LUE S  (?,?, ?)'] [ param et ers : ('Max ' ,  ' Pow er ', 'edspas s w ord ')]
bu t it  worksfine to add and re a d d ata in the ma inthre a d .Fur t he r mor eI  as s u me I need to us e threadin go ve r multipro c ess  b ecausescoped_ sessi o n usesthread lo cal stora ge .

A 
'm having_problems using_sqlalchemy together with threading.
import_queue
import threading

import_sqlalchemy
from_sqlalchemy import_create_engine,_Column, Integer, String,_Sequence
from sqlalchemy.ext.declarative import_declarative_base
from sqlalchemy.orm import sessionmaker
from_sqlalchemy.orm.scoping import scoped_session

engine_=_create_engine('sqlite:///:memory:', echo=False)
Base = declarative_base()

class User(Base):
    __tablename__ = 'users'
   _id_= Column(Integer,_Sequence('user_id_seq'),_primary_key=True)
_   name =_Column(String)
    fullname_= Column(String)
_   password = Column(String)

  __def __repr__(self):
 _      return "<User(name='%s', fullname='%s',_password='%s')>" % (
   _  __self.name,_self.fullname, self.password)
Base.metadata.create_all(engine)

sessionfactory = sessionmaker(bind=engine)

#_called by each thread
def write_name(q, name,_sessionfactory):
    session =_scoped_session(sessionfactory)
    ed_user = User(name=name,_fullname='Power', password='edspassword')
    session.add(ed_user)
_   session.commit()
 _ _q.put(name)

names = ["Max", "Austin"]

q =_queue.Queue()

for u in_names:
 _  t_= threading.Thread(target=write_name, args = (q, u,_sessionfactory))
  _ t.daemon = True
  __t.start()

s = q.get()

This_results_in:
sqlalchemy.exc.OperationalError:_(sqlite3.OperationalError) no_such table: users_[SQL:_'INSERT INTO_users_(name, fullname, password) VALUES (?,?,?)'] [parameters:_('Max',_'Power', 'edspassword')]

but it works fine to add_and read data in_the_main thread. Furthermore I_assume I need to use_threading over multiprocess because scoped_session uses_thread local_storage.

A