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The code in the snippet below comes from the docum...
# ask-communityt
Thomas
12/14/2022, 4:01 PMThe code in the snippet below comes from the documentation: https://docs.dagster.io/concepts/types#defining-a-dagster-type. However it does not work and returns the error below. Is this a problem on my end or in the documentation?
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Traceback (most recent call last):
File "/Users/thomas/miniforge3/envs/datagenerator/lib/python3.10/site-packages/IPython/core/interactiveshell.py", line 3433, in run_code
exec(code_obj, self.user_global_ns, self.user_ns)
File "<ipython-input-22-26c8dc208c5a>", line 10, in <module>
ins={"num": In(EvenDagsterType)},
TypeError: 'list' object is not callablej
jamie
12/14/2022, 8:32 PMhi @Thomas I will check this in a minute (hopping in a meeting right now), but could you try removing the comma from the end of the lambda function? so it would be `
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lambda _, value: isinstance(value, int) and value % 2 == 0t
Thomas
12/15/2022, 8:23 AMHi @jamie thanks, unfortunately it did not change the error code. Did you find anything else? Thanks!
j
jamie
12/15/2022, 3:51 PMnot yet. i have a bit of time right now, so i’m going to try to replicate this
jamie
12/15/2022, 3:54 PMhmmm it works for me. here’s what i’m doing
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from dagster import op, DagsterType, In, Out, job, repository
EvenDagsterType = DagsterType(
name="EvenDagsterType",
type_check_fn=lambda _, value: isinstance(value, int) and value % 2 == 0,
)
@op
def two():
return 2
@op(
ins={"num": In(EvenDagsterType)},
out=Out(EvenDagsterType),
)
def double_even(num):
return num
@job
def my_job():
double_even(two())
@repository
def my_repo():
return [my_job]❤️ 1
t
Thomas
12/21/2022, 12:47 PMThank you for the help!
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