I have a database class in my module, db.py that I can only call once, my design goal is to have one single database object and have that be used across all other modules. So db has the layout
#db.py
Class DatabaseManager
def __init__():
# initialize engine and database
db = DatabaseManager()
The problem is across multiple imports db is reinitialized each time, what I want to be able to do is something along the lines of:
# polygon.py
from db import db
class Polygon:
def something(self):
db.commitChange(...)
# main.py
class GUIWindow:
def something(self):
db.getJSON(...)
How can I create one object for the entire program, and have all other modules importing db use that one object? I was under the impression db would not be reinitialized, but I am receiving the engine initialization output twice, here's an example and my output
# db.py
class DatabaseManager(object):
'''
classdocs
'''
def __init__(self):
'''
Constructor
'''
print "hi"
db = DatabaseManager()
# polygon.py
from db import db
# main.py
from db import db
output:
hi
hi
