How do I check if the python debug option is set from within a script

Question

If I'm in debug mode, I want to do other stuff than when I'm not.

if DEBUG:
    STORED_DATA_FILE = os.path.join(TEMP_DIR, 'store.dat')
    LOG_LEVEL = logging.DEBUG
    print "debug mode"
else:
    STORED_DATA_FILE = os.path.join(SCRIPT_PATH, 'store.dat')
    LOG_LEVEL = logging.INFO
    print "not debug mode"

then:

python script.py
not debug mode

python -d script.py
debug mode

How can I detect that? It certainly isn't using the __debug__ variable.

Stabler

Well to clarify for the questions below. All I really want to do is pick up some information from the general environment, but I tried setting an environment variable and looking for it in os.environ but that does not always work. – Stabler

unrelated to -d option: Python: How to detect debug interpreter – Mcdougald

#27748632 This answer work for me. – Exhale

Answer 1

Parser debug mode is enabled with -d commandline option or PYTHONDEBUG environment variable and starting from python 2.6 is reflected in sys.flags.debug. But are you sure this is what you are looking for?

Heaume

That works for 2.6 and above, thanks. Now if anyone has an answer for 2.5 and below? – Stabler

Answer 2

you can use python -O with the __debug__ variable

where -O means optimise. so __debug__ is false

-d turns on debugging for the parser, which is not what you want

Spiraea

yes , -O continuously monitors the script and don't even need to reload – Supen