Logging

The Nextmv platform captures logs via stderr. Please note that any messages printed to stdout will not be displayed in Nextmv Cloud. Use the provided functionality to record logs. The redirect_stdout function is particularly useful when you want to redirect stdout to stderr for logging purposes. Many solvers and libraries print messages to stdout, which can be redirected to stderr for logging.

Python

import sys

import nextmv

print("0. I do nothing")

nextmv.redirect_stdout()

nextmv.log("1. I log a message to stderr")

print("2. I print a message to stdout")

nextmv.reset_stdout()

print("3. I print another message to stdout")

print("4. I print yet another message to stderr without the logger", file=sys.stderr)

nextmv.log("5. I log a message to stderr using the nextmv module directly")

print("6. I print a message to stdout, again")

After executing it, here are the messages printed to the different streams.

stdout
stderr

0. I do nothing
3. I print another message to stdout
6. I print a message to stdout, again

Learn how to log to Nextmv Cloud.