Hey all, what is the best practice for creating variables (i.e. date stamp) that you want to re-use across tasks? I can't just declare the variable as the date stamp doesn't update after the initial registry.

It sounds like Parameters are what you want, to me: https://docs.prefect.io/core/concepts/parameters.html

Hey @Jelle Vegter, if it’s not updating after initial registry, you likely did something like

time = Parameter("time", default=datetime.datetime.now())

. Prefect serializes your Flow so this value is evaluated during registration. You have two options. The first is storing you Flow as a script. See this . The second is deferring the evaluation of

datetime.datetime.now()

to a task. So you can do

time = Parameter("time", default="now")

, and then have a task that returns

datetime.datetime.now()

is the value is “now”

Thanks both!