@Marvin how do i create secret block using python

Ah, the secret's out! Here's how you can create a Secret block in Prefect using Python:

python
from prefect import task
from prefect.blocks.system import Secret

@task
def save_secret(name, value):
    Secret(value=value).save(name=name, overwrite=True)

@task
def load_secret(name):
    return Secret.load(name)

@flow
def save_and_load_secret():
    save_secret("my-super-secret", "super secret contents")

    secret: Secret = load_secret("my-super-secret")
    assert secret.get() == "super secret contents", secret

if __name__ == "__main__":
    save_and_load_secret()

This script defines two tasks:

save_secret

and

load_secret

. The

save_secret

task creates a new Secret block with a given name and value, and the

load_secret

task loads a Secret block by its name. The

save_and_load_secret

flow demonstrates how to use these tasks to save a secret and then load it. You can find more details in the Prefect documentation and the source code on GitHub. Remember, with great power comes great responsibility. Use your secrets wisely, or else they might not be secrets for long.

@Marvin Why am I getting this error? Validation of flow parameters failed with error: Traceback (most recent call last): File "/home/sungkim/miniconda3/envs/etl/lib/python3.9/site-packages/prefect/engine.py", line 423, in retrieve_flow_then_begin_flow_run parameters = flow.validate_parameters(flow_run.parameters) File "/home/sungkim/miniconda3/envs/etl/lib/python3.9/site-packages/prefect/flows.py", line 394, in validate_parameters raise ParameterTypeError.from_validation_error(exc) from None prefect.exceptions.ParameterTypeError: Flow run received invalid parameters: - mongodb_host: field required - mongodb_port: field required - mongodb_db: field required - mongodb_collection: field required - rest_url: field required

Ah, the classic case of missing parameters. It seems your flow is expecting certain parameters that it's not receiving. The parameters in question are

mongodb_host

,

mongodb_port

,

mongodb_db

,

mongodb_collection

, and

rest_url

. When you run your flow, you need to provide these parameters. Here's an example of how you might do this:

python
flow.run(
    parameters={
        "mongodb_host": "your_mongodb_host",
        "mongodb_port": "your_mongodb_port",
        "mongodb_db": "your_mongodb_db",
        "mongodb_collection": "your_mongodb_collection",
        "rest_url": "your_rest_url",
    }
)

Replace

"your_mongodb_host"

,

"your_mongodb_port"

,

"your_mongodb_db"

,

"your_mongodb_collection"

, and

"your_rest_url"

with your actual values. Remember, the parameters you pass to

flow.run()

must match the parameters your flow expects. If you're still having trouble, you might want to double-check your flow definition to make sure you've defined all the parameters correctly. And remember, humans, always keep track of your parameters. It's not like they're going to remember themselves.

@Marvin flow.run( AttributeError: 'function' object has no attribute 'run'

Ah, the elusive attribute error. It's like trying to find a black cat in a coal cellar at midnight. It seems you're trying to call the

run

method on a function object, which doesn't have such an attribute. In Prefect, the

run

method is typically called on a

Flow

object, not a function. Here's an example of how you might define and run a flow:

python
from prefect import Flow, Parameter

# Define your flow
with Flow("My Flow") as flow:
    x = Parameter("x")

# Run your flow
flow.run(parameters={"x": 42})

In this example,

flow

is an instance of the

Flow

class, which does have a

run

method. If you're still seeing this error, it might be because you're trying to call

run

on a function that's meant to be a task within your flow. In that case, you'll need to include that function in your flow definition and then call

run

on the flow itself. Remember, it's all fun and games until someone loses an attribute.