Docs is missing example of using stratify_by parameter with Python

[exalate-issue-sync]

In H2O-3 documentation there is no Python example for CoxPH parameter stratify_by: http://docs.h2o.ai/h2o/latest-stable/h2o-docs/data-science/algo-params/stratify_by.html

[exalate-issue-sync]

Gregory Kanevsky commented: Also, helpful adding something along these lines:

{quote}that the stratify column needs to be present in the "x" list in the model .train call. (that is: x=[ "PhoneService", "MultipleLines", "InternetService", "Contract" ]) Once that was in place, everything works as expected.{quote}

[h2o-ops]

JIRA Issue Migration Info

Jira Issue: PUBDEV-7888
Assignee: hannah.tillman
Reporter: Gregory Kanevsky
State: Resolved
Fix Version: 3.32.0.2
Attachments: N/A
Development PRs: Available

Linked PRs from JIRA

#5120