config

config2

blocks.py

from prefect.blocks.core import Block

class AddBlock(Block):
    x: int = 1
    y: int = 2
    
    def add(self):
        return self.x + self.y
    
class MultiplyBlock(Block):
    x: int = 1
    y: int = 2
    
    def multiply(self):
        return self.x * self.y
    
a = AddBlock(x=42)
m = MultiplyBlock(y=42)

import inspect
from prefect.blocks.core import Block
from prefect.utilities.importtools import load_script_as_module

filename = "blocks.py" # file where some block instances are defined

# load the file as a module
module = load_script_as_module(filename)

instances = [
    obj for name, obj in inspect.getmembers(module) 
    if not inspect.isclass(obj) and isinstance(obj, Block)
]

print(instances) # yields [AddBlock(x=42, y=2), MultiplyBlock(x=1, y=42)]