how to use the same object on different classes in python?

Question

This is probably a very basic question.

I have some objects that I want to be created once and then used by many classes of my application, for instance "logging" and "db". I don't wanna make a new connection to the DB everytime a different class wants to do something.

So my idea was to create a Class like:

class MyDB(object):
    mydb=createMySQLconnection()

then I'd do "from ... import MyDB" and use MyDB.mydb

would it work? is this the best way to do that?

I would pass the connection in as a parameter to each classes' __init__(). Or, if you don't plan on only using this connection throughout the program, you can inherit all of you classes from MyDB — Joel Cornett
– Joel Cornett, Commented May 20, 2012 at 16:01

Fred Foo · Accepted Answer · 2012-05-20 15:59:24Z

3

This would work, but there's no reason to create a class. Just put mydb in a module as a free-standing variable.

Often, when you'd use a singleton in other programming languages, you can get by in Python with a module.

answered May 20, 2012 at 15:59

Fred Foo

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