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Errors & debugging

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Errors & debugging easy

How to Debug Print Behind a DEBUG Environment Flag in Python

Create a debug_print function that only outputs when the DEBUG environment variable is set to a truthy value like 1, true, yes, or on.

debugging environment-variables logging
Python 
import os


def debug_print(*args, **kwargs):
    """Print only when DEBUG environment variable is set to a truthy value."""
    if os.environ.get("DEBUG", "").lower() in ("1", "true", "yes", "on"):
        print(*args, **kwargs)


if __name__ == "__main__":
    # Example usage: run as `DEBUG=1 python script.py` to se…
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