prefect λ prefect deploy flows py pipe Traceback most recen Prefect Community #pacc-june-14-2023

(prefect) λ prefect deploy flows.py:pipe Traceback...

# pacc-june-14-2023

Tim A

06/14/2023, 7:58 PM

(prefect) λ prefect deploy flows.py:pipe Traceback (most recent call last): File "D:\Packages\Miniconda\envs\prefect\lib\site-packages\prefect\cli\_utilities.py", line 41, in wrapper return fn(*args, **kwargs) File "D:\Packages\Miniconda\envs\prefect\lib\site-packages\prefect\utilities\asyncutils.py", line 255, in coroutine_wrapper return call() File "D:\Packages\Miniconda\envs\prefect\lib\site-packages\prefect\_internal\concurrency\calls.py", line 383, in call return self.result() File "D:\Packages\Miniconda\envs\prefect\lib\site-packages\prefect\_internal\concurrency\calls.py", line 283, in result return self.future.result(timeout=timeout) File "D:\Packages\Miniconda\envs\prefect\lib\site-packages\prefect\_internal\concurrency\calls.py", line 169, in result return self.__get_result() File "D:\Packages\Miniconda\envs\prefect\lib\concurrent\futures\_base.py", line 403, in __get_result raise self._exception File "D:\Packages\Miniconda\envs\prefect\lib\site-packages\prefect\_internal\concurrency\calls.py", line 346, in _run_async result = await coro File "D:\Packages\Miniconda\envs\prefect\lib\site-packages\prefect\cli\deploy.py", line 300, in deploy await _run_single_deploy( File "D:\Packages\Miniconda\envs\prefect\lib\site-packages\prefect\client\utilities.py", line 40, in with_injected_client return await fn(*args, **kwargs) File "D:\Packages\Miniconda\envs\prefect\lib\site-packages\prefect\cli\deploy.py", line 391, in _run_single_deploy flow_name = flow.name AttributeError: 'NoneType' object has no attribute 'name' An exception occurred.

Jeff Hale

06/14/2023, 8:00 PM

can you share your flow code and prefect version here? Checking with other folks.

Cody

06/14/2023, 8:01 PM

we had the same issue

Jeff Hale

06/14/2023, 8:02 PM

And you solved with adding a

right?

Cody

06/14/2023, 8:04 PM

both

prefect deploy 104\flow.py:pipe

and

prefect deploy .\104\flow.py:pipe

threw that error

Jeff Hale

06/14/2023, 8:04 PM

What’s your flow code file?

Cody

06/14/2023, 8:04 PM

Copy code

import httpx
from prefect import flow, task


@task
def fetch_cat_fact():
    return httpx.get("<https://catfact.ninja/fact?max_length=140>").json()["fact"]


@task(persist_result=True)
def formatting(fact: str):
    return fact.title()


@flow
def pipe():
    fact = fetch_cat_fact()
    formatted_fact = formatting(fact)


if __name__ == "__main__":
    pipe()

Jeff Hale

06/14/2023, 8:05 PM

Did you get it working @Cody?

Cody

06/14/2023, 8:05 PM

I have not

Jeff Hale

06/14/2023, 8:06 PM

Ah. What’s your error traceback?

Cody

06/14/2023, 8:06 PM

Copy code

❯❯❯  prefect deploy 104\flow.py:pipe  
Traceback (most recent call last):
  File "C:\Users\Cody\anaconda3\envs\pcc310\lib\site-packages\prefect\cli\_utilities.py", line 41, in wrapper
    return fn(*args, **kwargs)
  File "C:\Users\Cody\anaconda3\envs\pcc310\lib\site-packages\prefect\utilities\asyncutils.py", line 255, in coroutine_wrapper
    return call()
  File "C:\Users\Cody\anaconda3\envs\pcc310\lib\site-packages\prefect\_internal\concurrency\calls.py", line 383, in __call__
    return self.result()
  File "C:\Users\Cody\anaconda3\envs\pcc310\lib\site-packages\prefect\_internal\concurrency\calls.py", line 283, in result
    return self.future.result(timeout=timeout)
  File "C:\Users\Cody\anaconda3\envs\pcc310\lib\site-packages\prefect\_internal\concurrency\calls.py", line 169, in result
    return self.__get_result()
  File "C:\Users\Cody\anaconda3\envs\pcc310\lib\concurrent\futures\_base.py", line 403, in __get_result
    raise self._exception
  File "C:\Users\Cody\anaconda3\envs\pcc310\lib\site-packages\prefect\_internal\concurrency\calls.py", line 346, in _run_async
    result = await coro
  File "C:\Users\Cody\anaconda3\envs\pcc310\lib\site-packages\prefect\cli\deploy.py", line 300, in deploy
    await _run_single_deploy(
  File "C:\Users\Cody\anaconda3\envs\pcc310\lib\site-packages\prefect\client\utilities.py", line 40, in with_injected_client
    return await fn(*args, **kwargs)
  File "C:\Users\Cody\anaconda3\envs\pcc310\lib\site-packages\prefect\cli\deploy.py", line 391, in _run_single_deploy
    flow_name = flow.name
AttributeError: 'NoneType' object has no attribute 'name'
An exception occurred.

Jeff Hale

06/14/2023, 8:06 PM

And where are you running your command?

Jeff Hale

06/14/2023, 8:06 PM

I am thinking this might be windows related. What kind of shell are you in?

Jeff Hale

06/14/2023, 8:07 PM

@Tim A - what kind of shell are you using?

Cody

06/14/2023, 8:07 PM

one directory up from the flow file, but I also tried running in the same dir as the flow file

Cody

06/14/2023, 8:07 PM

I'm running powershell inside pycharm

Tim A

06/14/2023, 8:07 PM

cmder - v 1.3.20.151

Tim A

06/14/2023, 8:08 PM

git version 2.39.0.windows.1

Jeff Hale

06/14/2023, 8:08 PM

I think there might be an issue with the file paths - particularly forward and backward slashes.

Jeff Hale

06/14/2023, 8:08 PM

Perhaps on our end trying to resolve file path.

Tim A

06/14/2023, 8:09 PM

it is not the file path provided at least:

Copy code

E:\prefect-training (main -> origin)
(prefect) λ prefect deploy weather.py:aggregate_temps

Tim A

06/14/2023, 8:09 PM

can't miss this one

Tim A

06/14/2023, 8:10 PM

python can import "weather.py" using "import weather" so its not a python path issue

Jeff Hale

06/14/2023, 8:11 PM

Our

prefect deploy

cli command might be altering the path. But you tried it in the same directory, so maybe that’s not it.

Tim A

06/14/2023, 8:12 PM

is there a way to debug the prefect.cli.deploy() command?

Tim A

06/14/2023, 8:13 PM

I'm trying something along the lines as

Tim A

06/14/2023, 8:13 PM

Copy code

from prefect.cli.deploy import deploy

deploy(
    entrypoint='E:\\prefect-training\\weather.py',
    flow_name='randomize',
    names=['this-is-a-test',]
)

Cody

06/14/2023, 8:20 PM

@Jeff Hale, when you say that the path is being altered, is that an issue between powershell and prefect? Just not sure if I'm doing something wrong

Jeff Hale

06/14/2023, 8:22 PM

I’m just guessing at this point. That’s a hunch. But maybe not the case if you created the deployment in the same folder as your flow b/c there weren’t any slashes.

Tim A

06/14/2023, 8:24 PM

Just to be sure, i'll check this from WSL

Tim A

06/14/2023, 8:31 PM

Same result from WSL

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tim@PRO237:/mnt/e/prefect-training$ /home/tim/.local/bin/prefect deploy weather.py:randomize
Traceback (most recent call last):
  File "/home/tim/.local/lib/python3.10/site-packages/prefect/cli/_utilities.py", line 41, in wrapper
    return fn(*args, **kwargs)
  File "/home/tim/.local/lib/python3.10/site-packages/prefect/utilities/asyncutils.py", line 255, in coroutine_wrapper
    return call()
  File "/home/tim/.local/lib/python3.10/site-packages/prefect/_internal/concurrency/calls.py", line 383, in __call__
    return self.result()
  File "/home/tim/.local/lib/python3.10/site-packages/prefect/_internal/concurrency/calls.py", line 283, in result
    return self.future.result(timeout=timeout)
  File "/home/tim/.local/lib/python3.10/site-packages/prefect/_internal/concurrency/calls.py", line 169, in result
    return self.__get_result()
  File "/usr/lib/python3.10/concurrent/futures/_base.py", line 403, in __get_result
    raise self._exception
  File "/home/tim/.local/lib/python3.10/site-packages/prefect/_internal/concurrency/calls.py", line 346, in _run_async
    result = await coro
  File "/home/tim/.local/lib/python3.10/site-packages/prefect/cli/deploy.py", line 300, in deploy
    await _run_single_deploy(
  File "/home/tim/.local/lib/python3.10/site-packages/prefect/client/utilities.py", line 40, in with_injected_client
    return await fn(*args, **kwargs)
  File "/home/tim/.local/lib/python3.10/site-packages/prefect/cli/deploy.py", line 391, in _run_single_deploy
    flow_name = flow.name
AttributeError: 'NoneType' object has no attribute 'name'
An exception occurred.
tim@PRO237:/mnt/e/prefect-training$

🙏 1

Jeff Hale

06/14/2023, 8:32 PM

Making the deployment the way shown in 105 will hopefully not have this issue.

Cody

06/14/2023, 8:32 PM

When I ran in WSL I got the same error, but it was a kind of janky install. In powershell I just listed my dir and ran the deploy command and still ran into the same error

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Directory: C:\wageup\pcc\prefect_lab\104


Mode                 LastWriteTime         Length Name
----                 -------------         ------ ----
d-----         6/14/2023     14:29                __pycache__
-a----         6/14/2023     13:42            381 flow.py
-a----         6/14/2023     13:29              0 __init__.py


 Cody   C:/wageup/pcc/prefect_lab/104  ﲍ                                                 pcc   14:31:07
❯❯❯  prefect deploy flow.py:pipe
Traceback (most recent call last):

Tim A

06/14/2023, 8:43 PM

Io and behold for 105

Copy code

E:\prefect-training (main -> origin)
(prefect) λ prefect deployment apply deployment.yaml
'deployment.yaml' did not conform to deployment spec: AttributeError("'NoneType' object
has no attribute 'name'")

Jeff Hale

06/14/2023, 8:52 PM

You don’t want to use

prefect apply

Jeff Hale

06/14/2023, 8:54 PM

With a prefect.yaml file you just want

prefect deploy path_to_flow:flow_function -n my_deployment_name

Tim A

06/14/2023, 9:03 PM

I've followed https://docs.prefect.io/2.10.13/tutorial/projects/#initializing-a-project and that seemed to be foolproof

Jeff Hale

06/14/2023, 9:08 PM

That tutorial should work fine.

prefect deployment apply

isn’t in that tutorial - maybe from somewhere else.

Cody

06/27/2023, 8:15 PM

Did either of you ever figure out what the cause of this is? I'm still running into it.

Cody

06/27/2023, 8:26 PM

Upgrading to prefect 2.10.16 runs things as expected

👍 1

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