Python flask print statements are not printed to logs

[Pratik_shinde]

i have deployed flask app on render.
print statements are getting logged locally but not on render.

seen similar issues without any resolution:

Python stdout is not on logs

Hi there, I’m new to render and I’m moving from heroku. I have a python script that runs a simple web page with tornado, but my log are not present on the ‘Logs’ screen. Neither do normal print statements work, or using python default logging module. The application that I’m using is a Web Service on the Free Plan. From previous results from this forum I found that the standard stdout should be redirected to the logs but this it’s not currently happening. The same script works (with both prin…

Python print statements are not printed to logs

The program prints logs from two threads when I run it locally but it does not on render.

[jeremy-render]

Hey,

Try adding the ‘flush’ parameter to flush the output from the buffer, e.g. print('something', flush=True)

Jérémy.
Render Support, UTC+3