On Wed, 05 Apr 2017 10:54:29 -0400, DFS wrote:
> I have identical databases in sqlite and postgres. I want to run the
> same code against them, but am having a small issue.
>
> Current code below throws the dreaded:
>
> NameError: global name 'db' is not defined
>
> on line 12
>
> How do I fix it? I want to keep dbconnect() as a separate function.
>
> Thanks.
>
> -------------------------------------------------------------
> 1 import sqlite3, psycopg2
> 2
> 3 def dbconnect(dbtype):
> 4 if dbtype == "sqlite":
> 5 conn = sqlite3.connect(cstr)
> 6 elif dbtype == "postgres":
> 7 conn = psycopg2.connect(cstr)
> 8 db = conn.cursor()
This line just sets db locally to dbconnect.
You'll have to return it in order to use it elsewhere.
Add a line like this:
return db
> 9
> 10 def updatedb(dbtype):
> 11 dbconnect(dbtype)
And then use the return value from dbconnect to create a new db locally
to updatedb:
db = dbconnect(dbtype)
> 12 db.execute("DML code")
> 13 print "updated " + dbtype
> 14 'close connection
>
> 15 def main():
> 16 updatedb('sqlite')
> 17 updatedb('postgres')
> 18
> 19 if __name__ == "__main__":
> 20 main()
> -------------------------------------------------------------
HTH,
Dan
--
https://mail.python.org/mailman/listinfo/python-list
