Extending the Splunk Enterprise and Cloud platform with Splunk apps allows users to get more data, find more answers and automate their operations. Many OEMs and Splunk customers like you have developed Splunk products, third-party applications and integrations.
With Python 2.7 EOL is scheduled on January 1, 2020, all the Splunk apps and add-ons regardless of whether they are downloaded from Splunkbase or custom-built need to be updated to Python 3 during the support period offered from Splunk.
Out of 100 Splunkbase applications (60 apps and 40 add-ons), we found that 60 (20 apps and 40 add-ons) require migration to python 3 if they had to be compatible with the future release of Splunk versions.