What does Python optimization (-O or PYTHONOPTIMIZE) do?

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VietMX Staff asked 4 years ago

In Python 2.7, -O has the following effect:

the byte code extension changes to .pyo
sys.flags.optimize gets set to 1
__debug__ is False
asserts don’t get executed

In addition -OO has the following effect:

sys.flags.optimize gets set to 2
doc strings are not available

Question Tags: Python, Senior Level