import logging

log_file = 'test.log'
info_format = '%(asctime)s - %(levelname)s - %(message)s'
logging.config.dictConfig({
    'version': 1,
    'disable_existing_loggers': False,
    'formatters': {
        'info_format': {
            'format': info_format
        },
    },
    'handlers': {
        'console': {
            'level': 'INFO',
            'class': 'logging.StreamHandler',
            'formatter': 'info_format'
        },
        'info_log_file': {
            'class': 'logging.handlers.RotatingFileHandler',
            'level': 'INFO',
            'filename': log_file,
            'formatter': 'info_format'
        }
    },
    'loggers': {
        '': {
            'handlers': [
                'console',
                'info_log_file'
            ],
            'level': 'INFO'
        }
    }
})


class A:

    def __init__(self):
        logging.info('object created of class A')

        self.logger = logging.getLogger()
        self.console_handler = None

    def say(self, word):
        logging.info('A object says: {}'.format(word))

    def disable_console_log(self):
        if self.console_handler is not None:
            # Console log has already been disabled
            return

        for handler in self.logger.handlers:
            if type(handler) is logging.StreamHandler:
                self.console_handler = handler
                self.logger.removeHandler(handler)

    def enable_console_log(self):
        if self.console_handler is None:
            # Console log has already been enabled
            return

        self.logger.addHandler(self.console_handler)
        self.console_handler = None


if __name__ == '__main__':
    a = A()
    a.say('111')
    a.disable_console_log()
    a.say('222')
    a.enable_console_log()
    a.say('333')

控制台输出:

2018-09-15 15:22:23,354 - INFO - object created of class A
2018-09-15 15:22:23,356 - INFO - A object says: 111
2018-09-15 15:22:23,358 - INFO - A object says: 333

Test.log文件内容:

2018-09-15 15:22:23,354 - INFO - object created of class A
2018-09-15 15:22:23,356 - INFO - A object says: 111
2018-09-15 15:22:23,357 - INFO - A object says: 222
2018-09-15 15:22:23,358 - INFO - A object says: 333

(早就死了的问题，但对未来的搜索者来说)

更接近最初海报的代码/意图，这适用于我在python 2.6下

#!/usr/bin/python
import logging

logger = logging.getLogger() # this gets the root logger

lhStdout = logger.handlers[0]  # stdout is the only handler initially

# ... here I add my own handlers 
f = open("/tmp/debug","w")          # example handler
lh = logging.StreamHandler(f)
logger.addHandler(lh)

logger.removeHandler(lhStdout)

logger.debug("bla bla")

我必须解决的问题是在添加一个新的stdout处理程序后删除它;如果没有处理程序，记录器代码将自动重新添加标准输出。

IndexOutOfBound修复:如果你得到一个IndexOutOfBound错误，而实例化lhStdout，移动实例化后添加你的文件处理程序，即。

...
logger.addHandler(lh)

lhStdout = logger.handlers[0]
logger.removeHandler(lhStdout)

使用装饰器找到了一个优雅的解决方案，它解决了以下问题:如果您正在编写一个具有多个函数的模块，每个函数都有几个调试消息，并且您希望禁用除当前关注的函数之外的所有函数的登录，该怎么办?

你可以使用装饰器:

import logging, sys
logger = logging.getLogger()
logging.basicConfig(stream=sys.stderr, level=logging.DEBUG)


def disable_debug_messages(func):
    def wrapper(*args, **kwargs):
        prev_state = logger.disabled
        logger.disabled = True
        result = func(*args, **kwargs)
        logger.disabled = prev_state
        return result
    return wrapper

然后，你可以这样做:

@disable_debug_messages
def function_already_debugged():
    ...
    logger.debug("This message won't be showed because of the decorator")
    ...

def function_being_focused():
    ...
    logger.debug("This message will be showed")
    ...

即使从function_being_focused内部调用function_already_debug，也不会显示来自function_already_debug的调试消息。 这确保您将只看到您所关注的函数的调试消息。

希望能有所帮助!

我使用:

logger = logging.getLogger()
logger.disabled = True
... whatever you want ...
logger.disabled = False

这里有一些非常好的答案，但显然没有考虑太多最简单的答案(只从无穷开始)。

root_logger = logging.getLogger()
root_logger.disabled = True

这将禁用根日志记录器，从而禁用所有其他日志记录器。 我还没有真正测试过，但它应该是最快的。

从python 2.7的日志代码中，我看到了这一点

def handle(self, record):
    """
    Call the handlers for the specified record.

    This method is used for unpickled records received from a socket, as
    well as those created locally. Logger-level filtering is applied.
    """
    if (not self.disabled) and self.filter(record):
        self.callHandlers(record)

这意味着当它被禁用时，不会调用任何处理程序，并且它应该比过滤到一个非常高的值或设置一个no-op处理程序更有效。

你还可以:

handlers = app.logger.handlers
# detach console handler
app.logger.handlers = []
# attach
app.logger.handlers = handlers