Python Docs: Add examples to CoxProportionalHazards

[exalate-issue-sync]

Add examples for each CoxProportionalHazards parameter to the following file, following the format that is already in use.
h2o-3/h2o-bindings/bin/custom/python/coxph.py

Many options will be the same as GBM. For others, tests are available here:
https://github.com/h2oai/h2o-3/tree/master/h2o-py/tests/testdir_algos/coxph

Use
from h2o.estimators import H2OCoxProportionalHazardsEstimator

[exalate-issue-sync]

hannah.tillman commented: # {{weights_column}} still not working ([https://0xdata.atlassian.net/browse/PUBDEV-6919|https://0xdata.atlassian.net/browse/PUBDEV-6919|smart-link])

{{stratify_by}}: categorical issues (“non-categorical column ‘enum' cannot be used for stratification”). No categorical columns in heart dataset; haven’t found another dataset with a “start” and “stop” column to use for CoxPH.

[exalate-issue-sync]

Angela Bartz commented: Watch https://0xdata.atlassian.net/browse/PUBDEV-6968 for info on how to use {{stratify_by}} with Python. There may be a bug.

[h2o-ops]

JIRA Issue Migration Info

Jira Issue: PUBDEV-6924
Assignee: hannah.tillman
Reporter: hannah.tillman
State: Resolved
Fix Version: 3.28.0.1
Attachments: N/A
Development PRs: Available

Linked PRs from JIRA

#4083