/usr/lib/python3/dist-packages/pyvisa/compat/nullhandler.py is in python3-pyvisa 1.8-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | # -*- coding: utf-8 -*-
"""
pyvisa.compat.nullhandler
~~~~~~~~~~~~~~~~~~~~~~~~~
Taken from the Python 2.7 source code.
:copyright: 2013, PSF
:license: PSF License
"""
from __future__ import division, unicode_literals, print_function, absolute_import
import logging
class NullHandler(logging.Handler):
"""
This handler does nothing. It's intended to be used to avoid the
"No handlers could be found for logger XXX" one-off warning. This is
important for library code, which may contain code to log events. If a user
of the library does not configure logging, the one-off warning might be
produced; to avoid this, the library developer simply needs to instantiate
a NullHandler and add it to the top-level logger of the library module or
package.
"""
def handle(self, record):
pass
def emit(self, record):
pass
def createLock(self):
# noinspection PyAttributeOutsideInit
self.lock = None
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