Store Python function in JSON

Question

Say I have a JSON file as such:

{
  \"x\":5,
  \"y\":4,
  \"func\" : def multiplier(a,b):
               return a*d
}

This over-simplif

Answer 1

Python has a built in module name marshal that can handle this.

import marshal, ujson as json

def multiplier(a, b):
    return a * b

x = {
  "x":5,
  "y":4,
  "func" : marshal.dumps(multiplier.func_code)
}

x = json.dumps(x)
print(x)

And to get it back...

x = json.loads(x)
x = marshal.loads(x['func'])
# maybe save the function name in dict
func = types.FunctionType(x, globals(), "some_func_name") 

print(func(2,4))