python - Pyodbc Error when creating SQLAlchemy Engine -

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i trying write pandas dataframe called df table in sql express in code below, error dbapierror: (pyodbc.error) ('im002', '[im002] [microsoft][odbc driver manager] data source name not found , no default driver specified (0) (sqldriverconnect)') in line engine = sqlalchemy.create_engine('mssql://lenovo-pc\sqlexpress\\sqlexpress/databasewithinfo?trusted_connection=yes'). saw answer in this post , tried follow that. know server_name = lenovo-pc\sqlexpress , database_name = databasewithinfo , struggling understand i'm going wrong.

import sqlalchemy sqlalchemy import create_engine engine = sqlalchemy.create_engine('mssql://lenovo-pc\sqlexpress\\sqlexpress/databasewithinfo?trusted_connection=yes') df.to_sql('jpy_data', engine, chunksize=1000)

thank you

this isn't directly answer, toolkit test connection variants until works.

you want throw many connect strings variants can @ until works. i've put in 2 already.

i did notice post refer has sqlexpress once in connect string, unlike you.

import sqlalchemy sqlalchemy import create_engine  def test_it(t_connect_string):      #these connection setting, constant     di = dict(server="lenovo-pc",database="databasewithinfo")          connect_string = t_connect_string % di      try:         engine = sqlalchemy.create_engine(connect_string)         print "%s success!" %  (connect_string)         return true     except exception, e:         print "%s exception=>%s" %  (connect_string, e)         return false  #put many possible templates need until connects, you're li_test = [     """mssql://%(server)s\sqlexpress\\sqlexpress/%(database)s?trusted_connection=yes""",      #the post refer seems have format instead...     """mssql://%(server)s\\sqlexpress/%(database)s?trusted_connection=yes """,  ]  #test them until works. test in li_test:     result = test_it(test)     if result:         break

it blows me, because don't odbc installed, you'll more relevant errors hopefully.

mssql://lenovo-pc\sqlexpress\sqlexpress/databasewithinfo?trusted_connection=yes exception=>no module named pyodbc mssql://lenovo-pc\sqlexpress/databasewithinfo?trusted_connection=yes  exception=>no module named pyodbc

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