Python: how to do lazy debug logging

Question

I have some python like this:

def foo():
    logger = logging.getLogger()
    # do something here
    logger.debug(\'blah blah {}\'.format(expensive_func()))         


        

Answer 1

You can use stringlike library to add laziness to your messages

E.g.:

logger.debug(
    'blah blah {value}'
    .format(
        value=LazyString(expensive_func)
    )
)

Lib link: https://github.com/CovenantEyes/py_stringlike