How to update a global variable in Scenario
I have a variable defined as below:
{
"Sample_ratio": "0.01"
}
and in Scenario I try to update it as follows:
scenario = Scenario()
scenario.set_global_variables(Sample_ratio='0.001')
but when I print out, the value is still 0.01
print("global variable sample_ratio equals to " + dataiku.get_custom_variables()["Sample_ratio"])
[2020/06/14-10:37:46.623] [Exec-4267] [INFO] [dku.utils] - global variable sample_ratio equals to 0.01
Any idea why ?
My purpose is every time after the scenario run, the global variable"Sample_ratio" has an augment of 0.001
Thanks,
Lj
Best Answers
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Hi @zhlj
,Based on your screenshot I can see that the variable your trying to edit is well a project global variable, which means that
set_global_variables()cannot be used in this situation.To edit this value, I confirm that you should use the set_variables() method of a DSSProject object.
From the internal API, you should add these 2 lines to access the client API, followed then by the code sample shared above.
import dataiku
client = dataiku.api_client()
project = client.get_project(dataiku.get_custom_variables()['projectKey'])
project_variables = project.get_variables()
project_variables['standard']['Sample_ratio'] = 0.001
project_variables = project.set_variables(project_variables)If your issue remains, could you please share your script?
Have a great day!
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Hi @zhlj
,I'm happy to hear you managed to solve your issue
Just for information,
dataiku.get_custom_variables()['projectKey']should also work. It retrieves the current project key when used from within a project and when using the internal API.So the two following lines are equivalent:
project = client.get_project(dataiku.get_custom_variables()['projectKey']) # Do not replace 'projectKey', the current projectKey is sent to get_project()
project = client.get_project('projectKey') # Or just replace manually 'projectKey' with the project key of the project you want to accessCheers!
Answers
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Hi @zhlj
,scenario.set_global_variables()updates global variables set at the instance level. (These variables can be edited in Administration -> Settings -> Variables).I suspect your variable
Sample_ratioto be defined as a project variable. If the same variable is defined both at the instance and the project level,dataiku.get_custom_variables()will display the value of the project level variable in priority. Therefore, your scenario edits the value ofSample_ratioat the instance level, but the value you print comes from the project variable which hasn't been edited.To edit the project variable, you need to use
set_variables()like in the example below:project = client.get_project(dataiku.get_custom_variables()['projectKey'])
project_variables = project.get_variables()
project_variables['standard']['Sample_ratio'] = 0.001
project.set_variables(project_variables)Have a great day!
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Hi dimitri,
Thanks for reply. The variable I defined should be global variable (as attached PNG file), and that is the only variable I have defined. I tried your method, it didn't work, the output of "Sample_ratio" is still 0.01.
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one more thing, I am using dataiku internal api which is "import dataiku". In that case how should I fix this problem?
Regards,
Lj
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Thanks very much dimitri. It worked
. there is a tiny mistake though, this sentence should be project = client.get_project('projectKey')Thanks again.
Lj
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I see, thanks dimitri.
Regards,
Lj
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THank you. This helped me in solving my problem
