Python Memory Instancing; Investigate the break down between unique and shared

[ProcStack]

Python doesn't have pointers, but does seem that arrays can be shared as variables. Where setting variables to arrays will inherit changes from the former.
I'm calling many MANY pixmap.toImage(pixmap) series.

ToDo-

• Test variable 'instancing' with Lists, Sets, & Dictionaries
• Find the break down between PyQt and general Python instancing.
  • Are pixmaps considered arrays even as their own object?
• Is pixmap.toImage(pixmap) the same thing as pixmap.clone()?
  • If seemingly the same, run timers on pixmap.toImage(pixmap) vs pixmap.clone()
• Optimize TextViewer, TextBed, and Page Output definitions with findings.

[ProcStack]

Non instancing situations found-

a=5
b=a
a=9
print a
  - 9
print b
  - 5

a=4
b=[5,6,7]
b.append(a)
-OR-
b=[5,6,7,a]
a=10
print a
  - 10
print b
  - [5, 6, 7, 4]

Break case-

a=[6,5]
b=a
print b
  - [6, 5]
a[0]=9
print b
  - [9, 5]

 a=[6,7,8]
b=a
b[0]=2
print a
  - [2, 7, 8]
print b
  - [2, 7, 8]