Python: 禁用 iptcinfo 警告

Python: Disable iptcinfo warning

我正在使用 iptcinfo Python 模块从图片中获取元数据,但它向我抛出了很多此类(无用的)警告:

('WARNING: problems with charset recognition', "'\x1b'")

这是什么意思,我怎样才能删除这些警告(或防止它们发生),因为它们似乎对我的代码不重要?

我的代码很简单:

import iptcinfo
iptc = iptcinfo.IPTCInfo("DSC05647.jpg") 

This line in the code 似乎正在生成警告:

LOG.warn('problems with charset recognition %s', repr(temp))

您看到此消息是因为 Python 的日志记录模块的默认日志记录级别是 "warning"。

在您的代码中,您可以将库的记录器 logging level 修改得更高,这样您就不会看到警告:

import logging
iptcinfo_logger = logging.getLogger('iptcinfo')
iptcinfo_logger.setLevel(logging.ERROR)

编辑:为了进行故障排除,这里有一个片段可以查看每个记录器的级别:

for logger_name in logging.Logger.manager.loggerDict:
    logger_level = logging.getLogger(logger_name).level
    print logger_name, logging.getLevelName(logger_level)

首先,我认为iptcinfo应该与Python 2.

完美配合

另一个解决方案是修改原始源代码:

导致警告的原始代码

('WARNING: problems with charset recognition', "'\x1b'")

在 iptcinfo.py 文件的第 971 行。

LOG.warn('problems with charset recognition %s', repr(temp))

您可以 fork 原始 github 存储库并简单地注释掉它

#LOG.warn('problems with charset recognition %s', repr(temp))

然后

#Uninstall the original installation
pip uninstall iptcinfo
#Do pip install from your own fork. e.g.:
pip install git+git://github.com/Sulli/iptcinfo.git

问题是您使用的模块做了一些您不希望模块做的事情。

print (
       'WARNING: problems with charset recognition',
      repr(temp))

好吧,有些东西不能像那样被禁用。但是他们是关于如何实现相同目标的很好的 SO 线程。

Silence the stdout of a function in Python without trashing sys.stdout and restoring each function call

Suppress calls to print (python)

所以把它们结合起来

import iptcinfo

origianl_IPTCInfo = iptcinfo.IPTCInfo

def patch_IPTCInfo(*args, **kwargs):
    import os, sys

    class HiddenPrints:
        def __enter__(self):
            self._original_stdout = sys.stdout
            sys.stdout = open('/dev/null', 'w')

        def __exit__(self, exc_type, exc_val, exc_tb):
            sys.stdout = self._original_stdout

    with HiddenPrints():
        return origianl_IPTCInfo(*args, **kwargs)

iptcinfo.IPTCInfo = patch_IPTCInfo

iptc = iptcinfo.IPTCInfo("/Users/tarunlalwani/Downloads/image.jpg")
print(iptc)

而且效果很好