How can I detect if Python is running in Python Development Mode?

Question

1.3k views Asked by Flimm At 23 October 2020 at 13:51

To turn on Python Development Mode, you can use this flag:

python3 -X dev example.py

or use this environment variable:

PYTHONDEVMODE=1 python3 example.py

How can I write code within example.py to detect whether Python is running in Python Development Mode or not?

There are 1 answers

**Sameera K** · Accepted Answer · 2022-01-16T13:34:11+00:00

Sameera K On 16 January 2022 at 13:34 BEST ANSWER

sys.flags.dev_mode is True, when running as python -X dev app.py