Any ideas how to achieve this strategy, I don’t really care about the complexity of what happens under the hood (as long as I don’t have to install weird packages), I just want the code to read cleanly like this …

Ideally I would have this block in one of two states :

<Inactive>
 #DO2; for i in range (start4, start4+duration4):
     #DO2; X4[:,i] = state_process4.update()

<Active>
 DO2; for i in range (start4, start4+duration4):
     DO2; X4[:,i] = state_process4.update()

where I had thought a simple def would work

def DO2(): # execute all these prev commented out steps, to remove simply conv. DO2 to #DO2
   pass

However there seems no way to precede the “for” with anything but a # comment

I’ve been led down the garden path to something close like this, but the parser still
complains about the “for” being invalid syntax

def DO22(func):
   def wrapper(*args, **kwargs):
      pass
   return wrapper

# later in code

 @DO22
 for i in range (start4, start4+duration4):
  DO2;               X4[:,i] = state_process4.update()

for i in range (start4, start4+duration4):
^^^
SyntaxError: invalid syntax