Print statement from example does not show up in logs for me but logging lib works

[janvdvegt]

Long story short

Print statements do not show up in logs in bare bones example. Replacing them with logging.info works.

Description

Example code from docs:

import kopf

 @kopf.on.create('zalando.org', 'v1', 'ephemeralvolumeclaims')
 def create_fn(body, **kwargs):
     print(f"A handler is called with body: {body}")

This does work:

import kopf
import logging

 @kopf.on.create('zalando.org', 'v1', 'ephemeralvolumeclaims')
 def create_fn(body, **kwargs):
     logging.info(f"A handler is called with body: {body}")

I tried to set PYTHONUNBUFFERED to 0 but this did not matter.

Environment

• Kopf version: 0.24
• Kubernetes version: 0.12.4
• Python version: 3.7
• OS/platform: MacOS

By using the logging library it does not block me in whatever way but the base example does not work for me so I just wanted to notify you