;py,import interpreter

; pass value to Python and store in a self.attribute
o<retainparam1> call [25.0]

; now check it's still there
o<checkparam1_retained> call

; since 'self' is aliased to 'interpreter.this' 
; the same value must show up here too:

;py,assert interpreter.this.param1 == 25.0
M2