How to save (pickle) a model instance in pyomo

Question

I want to create a model instance and then save it so I can load and solve at a later time (the initialization takes quite long compared to the solving). When I tried this i

Answer 1

The solution is the cloudpickle module, regular pickle has problems pickling functions. An example:

import cloudpickle

with open('test.pkl', mode='wb') as file:
   cloudpickle.dump(instance, file)


with open('test.pkl', mode='rb') as file:
   instance = cloudpickle.load(file)