<@ULVA73B9P> can I host my tasks and flows inside ...
# ask-marvin
d
@Marvin can I host my tasks and flows inside a class so that I can use dependency injection?
m
You can organize your Prefect tasks and flows inside a class to facilitate dependency injection, but Prefect itself doesn't provide explicit support for class-based flows. Instead, you can define methods within a class and use them as tasks or flows. Here's a basic example of how you might structure this:
Copy code
python
from prefect import flow, task

class MyFlow:
    def __init__(self, dependency):
        self.dependency = dependency

    @task
    def my_task(self, x):
        return self.dependency.process(x)

    @flow
    def my_flow(self, data):
        results = []
        for item in data:
            result = self.my_task(item)
            results.append(result)
        return results

# Usage
class Dependency:
    def process(self, x):
        return x * 2

dependency = Dependency()
my_flow_instance = MyFlow(dependency)
result = my_flow_instance.my_flow([1, 2, 3])
print(result)
In this example,
Dependency
is a class that provides some processing logic, which is injected into
MyFlow
. The
my_flow
method orchestrates the execution of
my_task
. For more details on Prefect's capabilities, you can explore their GitHub repository or the Prefect documentation.