Gobal Variables non-primitive type

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January 22nd, 2013, 07:05 AM

Sentinal_Bais

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Gobal Variables non-primitive type

I know how to create global variables and modify them inside functions.

Declare a Gobal Int Counter
eg

i = 0

but how do you declare a global variable that is not primitive eg an opencv image object

gobalImage = ?

or in general any non primitive object is this even possible in python?

in c++ you can just go

Mat image; ect

January 22nd, 2013, 10:20 AM

SuperOscar

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Quote:

Originally Posted by Sentinal_Bais

but how do you declare a global variable that is not primitive eg an opencv image object

There’s no need to “declare” variables: just assign values to them. In Python variables are after all only names you use when you refer to the data.

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January 22nd, 2013, 10:21 AM

b49P23TIvg

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Code:

import cv2  # cv2 is global

def f(): pass  # f is global

class c:pass # c is global

img =  cv2.imread(sys.argv[1])  # img is global

Definitions starting in column 1 are global.

Example of opencv:
http://forums.devshed.com/python-programming-11/sudoku-solver-school-project-error-help-934125.html

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