Python 在 Flask 服务器中禁用控制台消息

Disable console messages in Flask server

提问by ATOzTOA

I have a Flask server running in standalone mode (using app.run()). But, I don't want any messages in the console, like

我有一个以独立模式运行的 Flask 服务器（使用app.run()）。但是，我不希望控制台中出现任何消​​息，例如

127.0.0.1 - - [15/Feb/2013 10:52:22] "GET /index.html HTTP/1.1" 200 -
...

How do I disable verbose mode?

如何禁用详细模式？

回答by Drewes

You can set level of the Werkzeug logger to ERROR, in that case only errors are logged:

您可以将 Werkzeug 记录器的级别设置为 ERROR，在这种情况下，只会记录错误：

import logging
log = logging.getLogger('werkzeug')
log.setLevel(logging.ERROR)

Here is a fully working example tested on OSX, Python 2.7.5, Flask 0.10.0:

这是在 OSX、Python 2.7.5、Flask 0.10.0 上测试的完整示例：

from flask import Flask
app = Flask(__name__)

import logging
log = logging.getLogger('werkzeug')
log.setLevel(logging.ERROR)

@app.route("/")
def hello():
    return "Hello World!"

if __name__ == "__main__":
    app.run()

回答by daicoden

Another reason you may want to change the logging output is for tests, and redirect the server logs to a log file.

您可能想要更改日志输出的另一个原因是为了测试，并将服务器日志重定向到日志文件。

I couldn't get the suggestion above to work either, it looks like loggers are setup as part of the app starting. I was able to get it working by changing the log levels afterstarting the app:

我也无法让上述建议起作用，看起来记录器已设置为应用程序启动的一部分。我能够通过在启动应用程序后更改日志级别来使其工作：

... (in setUpClass)
server = Thread(target=lambda: app.run(host=hostname, port=port, threaded=True))
server.daemon = True
server.start()
wait_for_boot(hostname, port)  # curls a health check endpoint

log_names = ['werkzeug']
app_logs = map(lambda logname: logging.getLogger(logname), log_names)
file_handler = logging.FileHandler('log/app.test.log', 'w')

for app_log in app_logs:
    for hdlr in app_log.handlers[:]:  # remove all old handlers
        app_log.removeHandler(hdlr)

    app_log.addHandler(file_handler)

Unfortunately the * Running on localhost:9151and the first health check is still printed to standard out, but when running lots of tests it cleans up the output a ton.

不幸的是* Running on localhost:9151，第一个健康检查仍然打印为标准输出，但是在运行大量测试时，它会大量清理输出。

"So why log_names?", you ask. In my case there were some extra logs I needed to get rid of. I was able to find which loggers to add to log_names via:

“那为什么log_names？”，你问。就我而言，我需要删除一些额外的日志。我能够通过以下方式找到要添加到 log_names 的记录器：

from flask import Flask
app = Flask(__name__)

import logging
print(logging.Logger.manager.loggerDict)

Side note: It would be nice if there was a flaskapp.getLogger() or something so this was more robust across versions. Any ideas?

旁注：如果有一个 flaskapp.getLogger() 或其他东西会很好，所以这在不同版本中更加健壮。有任何想法吗？

Some more key words: flask test log remove stdout output

还有一些关键词：flask test log remove stdout output

thanks to:

谢谢：

• http://code.activestate.com/lists/python-list/621740/and
• How to change filehandle with Python logging on the fly with different classes and imports

• http://code.activestate.com/lists/python-list/621740/和
• 如何使用不同的类和导入即时更改 Python 日志记录的文件句柄

回答by Tomasz Wojcik

@Drewes solution works most of the time, but in some cases, I still tend to get werkzeug logs. If you really don't want to see any of them, I suggest you disabling it like that.

@Drewes 解决方案大部分时间都有效，但在某些情况下，我仍然倾向于获取 werkzeug 日志。如果你真的不想看到它们中的任何一个，我建议你像那样禁用它。

from flask import Flask
import logging

app = Flask(__name__)
log = logging.getLogger('werkzeug')
log.disabled = True
app.logger.disabled = True

For me it failed when abort(500)was raised.

对我来说，它在abort(500)被提出时失败了。

回答by Ami

In case you are using WSGI server , please set the log to None

如果您使用的是 WSGI 服务器，请将日志设置为无

gevent_server = gevent.pywsgi.WSGIServer(("0.0.0.0", 8080), app,log = None)

回答by iamtodor

This solution provides you a way to get your own prints and stack traces but without information level logs from flask suck as 127.0.0.1 - - [15/Feb/2013 10:52:22] "GET /index.html HTTP/1.1" 200

此解决方案为您提供了一种获取自己的打印和堆栈跟踪的方法，但没有来自烧瓶的信息级别日志，因为 127.0.0.1 - - [15/Feb/2013 10:52:22] "GET /index.html HTTP/1.1" 200

from flask import Flask
import logging

app = Flask(__name__)
log = logging.getLogger('werkzeug')
log.disabled = True

回答by Deep state of denial

A brute forceway to do it if you really don't want anything to log into the console beside print() statements is to logging.basicConfig(level=logging.FATAL). This would disable all logs that are of status under fatal. It would not disable printing but yeah, just a thought :/

如果您真的不想在 print() 语句旁边登录控制台，则一种蛮力的方法是将logging.basicConfig(level=logging.FATAL). 这将禁用处于致命状态的所有日志。它不会禁用打印，但是是的，只是一个想法：/

EDIT: I realized it would be selfish of me not to put a link to the documentation I used :) https://docs.python.org/3/howto/logging.html#logging-basic-tutorial

编辑：我意识到不给我使用的文档添加链接是自私的:) https://docs.python.org/3/howto/logging.html#logging-basic-tutorial

回答by Slava V

To suppress Serving Flask app ...:

压制Serving Flask app ...：

os.environ['WERKZEUG_RUN_MAIN'] = 'true'
app.run()

回答by progyammer

Late answer but I found a way to suppress EACH AND EVERY CONSOLE MESSAGE (including the ones displayed during an abort(...)error).

迟到的答案，但我找到了一种方法来抑制每个和每个控制台消息（包括在abort(...)错误期间显示的消息）。

import os
import logging

logging.getLogger('werkzeug').disabled = True
os.environ['WERKZEUG_RUN_MAIN'] = 'true'

This is basically a combination of the answers given by Slava Vand Tom Wojcik

这基本上是Slava V和Tom Wojcik给出的答案的组合

回答by Brendan Burkhart

None of the other answers worked correctly for me, but I found a solution based off Peter's comment. Flask apparently no longer uses loggingfor logging, and has switched to the clickpackage. By overriding click.echoand click.sechoI eliminated Flask's startup message from app.run().

其他答案都不适合我，但我找到了基于彼得评论的解决方案。Flask 显然不再logging用于日志记录，并已切换到click包。通过覆盖click.echo，click.secho我从app.run().

import logging

import click
from flask import Flask

app = Flask(__name__)

log = logging.getLogger('werkzeug')
log.setLevel(logging.ERROR)

def secho(text, file=None, nl=None, err=None, color=None, **styles):
    pass

def echo(text, file=None, nl=None, err=None, color=None, **styles):
    pass

click.echo = echo
click.secho = secho

@app.route("/")
def hello():
    return "Hello World!"

if __name__ == "__main__":
    app.run()

Between setting the logging level to ERRORand overriding the click methods with empty functions, all non-error log output should be prevented.

在将日志记录级别设置为ERROR和使用空函数覆盖单击方法之间，应防止所有非错误日志输出。

回答by Anton Erjomin

The first point: In according to official Flask documentation, you shouldn't run Flask application using app.run(). The best solution is using uwsgi, so you can disable default flask logs using command "--disable-logging"

第一点：根据官方 Flask 文档，您不应该使用 app.run() 运行 Flask 应用程序。最好的解决方案是使用 uwsgi，因此您可以使用命令“--disable-logging”禁用默认的烧瓶日志

For example:

例如：

uwsgi --socket 0.0.0.0:8001 --disable-logging --protocol=http -w app:app

uwsgi --socket 0.0.0.0:8001 --disable-logging --protocol=http -w app:app