MindClass wrote:
> Steve Holden wrote:
>
>>I'm guessing that you think this might be necessary to avoid importing
>>the same module multiple times: it's not. Python only runs the module's
>>code the first time the module is imported into a program. A further
>>import statement effectively does noting, because the interpreter sees
>>(from an entry in the sys.modules dictionary) that the module is already
>>present.
>>
>
> The problem is that I've to import different libraries according to the
> ORM (SQLObject, SQLAlchemy, etc)
>
So why the need for global variables?
if MySQL_wanted:
import MySQLdb as db
elif sqlite_wanted:
import pysqlite as db
else:
import psycopg2 as db
conn = db.connect(...)
...
regards
Steve
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