# The Python language has no structures
class Size:
width = 0
height = 0
class Point:
top = 0
left = 0
class Rectangle:
# Set later
size = None
point = None
size = Size()
size.width = 10
size.height = 10
point = Point()
point.top = 5
point.left = 5
rect = Rectangle()
rect.size = size
rect.point = point
print(f"{rect.point.left = }")
print(f"{rect.size.height = }")