Mad Prefect

2.3.0 verified Fri May 01 auth: no python

A collection of Prefect utilities and task libraries for building robust data pipelines. Current version 2.3.0, requires Python <3.13 and >=3.11. It provides custom blocks, flows, and integrations commonly used with Prefect.

pip install mad-prefect

Common errors

error ModuleNotFoundError: No module named 'mad_prefect.blocks' ↓

cause In v2.0+, subpackages were removed; `MadBlock` and `MadTask` are now top-level.

fix

Change import to from mad_prefect import MadBlock.

error ImportError: cannot import name 'MadFlow' from 'mad_prefect' ↓

cause MadFlow was renamed or removed in v2.0.0.

fix

Check changelog: MadFlow is deprecated; use @prefect.flow directly or from mad_prefect import MadFlow if available in your version.

Warnings

breaking In v2.0.0, the package restructured exports: `MadBlock` and `MadTask` are no longer in subpackages. Old imports from `mad_prefect.blocks` and `mad_prefect.tasks` will break. ↓

fix Use `from mad_prefect import MadBlock, MadTask` instead.

gotcha MadPrefect requires Prefect >=2.0 but also has upper bounds on Prefect version. Mixing incompatible Prefect versions leads to cryptic import errors. ↓

fix Check `mad-prefect`'s `install_requires` and match Prefect version exactly.

Imports

MadBlock
wrong
```
from mad_prefect.blocks import MadBlock
```
correct
```
from mad_prefect import MadBlock
```
MadBlock is top-level exported; subpackage import breaks in v2.0+
MadTask
wrong
```
from mad_prefect.tasks import MadTask
```
correct
```
from mad_prefect import MadTask
```
MadTask is top-level exported; subpackage import changed in v2.0

Quickstart

Basic flow using MadBlock and MadFlow decorator.

from mad_prefect import MadFlow, MadBlock
import prefect

@MadFlow
def my_flow():
    block = MadBlock.load("my-block")
    return block.run()

if __name__ == "__main__":
    my_flow()