AttributeError: 'function' object has no attribute 'line' when trying to create canvas line

Hello,

I've been trying to create a visual experiment, and when I test the code, I get the attribute error saying that the function doesn't have the attribute "line". This confuses me greatly since I know Canvas's functions should still work within other functions I'm creating!

Here is the parts of my code that are getting errors. The bold lines are the one its having issues with:

def drawTarget(x,y,orientation,cnvs,length=target_ll,angle=targetAngle):
	if orientation == "left":
		AngleX = cos(radians(90-angle)) * 0.5*length
	else:
		AngleX = cos(radians(90+angle)) * 0.5*length
		
	AngleY = sin(radians(90+angle)) * 0.5*length
	canvas.line(x-AngleX,y-AngleY,x+AngleX,y+AngleY)
#determines target locations for left and right side	
if random.randint(0,1):
	var.targetPos = -target_distance #left side
else:
	var.targetPos = target_distance #right side
#actually drawing target	
drawTarget(var.targetPos,0,target_orientation,targetCanvas)

Anyone know why this is happening?