Answers:
@bdiamante的答案可能只会部分帮助您。如果您在取消警告后仍然收到消息,那是因为pandas
库本身正在打印消息。除非您自己编辑Pandas源代码,否则您将无能为力。也许内部有一个抑制它们的选项,或者是一种覆盖事物的方法,但是我找不到。
假设您要确保干净的工作环境。在脚本的顶部,放pd.reset_option('all')
。使用Pandas 0.23.4,您将获得以下信息:
>>> import pandas as pd
>>> pd.reset_option('all')
html.border has been deprecated, use display.html.border instead
(currently both are identical)
C:\projects\stackoverflow\venv\lib\site-packages\pandas\core\config.py:619: FutureWarning: html.bord
er has been deprecated, use display.html.border instead
(currently both are identical)
warnings.warn(d.msg, FutureWarning)
: boolean
use_inf_as_null had been deprecated and will be removed in a future
version. Use `use_inf_as_na` instead.
C:\projects\stackoverflow\venv\lib\site-packages\pandas\core\config.py:619: FutureWarning:
: boolean
use_inf_as_null had been deprecated and will be removed in a future
version. Use `use_inf_as_na` instead.
warnings.warn(d.msg, FutureWarning)
>>>
按照@bdiamante的建议,您可以使用该warnings
库。现在,诚如其言,警告已被删除。但是,仍然存在一些令人讨厌的消息:
>>> import warnings
>>> warnings.simplefilter(action='ignore', category=FutureWarning)
>>> import pandas as pd
>>> pd.reset_option('all')
html.border has been deprecated, use display.html.border instead
(currently both are identical)
: boolean
use_inf_as_null had been deprecated and will be removed in a future
version. Use `use_inf_as_na` instead.
>>>
实际上,禁用所有警告会产生相同的输出:
>>> import warnings
>>> warnings.simplefilter(action='ignore', category=Warning)
>>> import pandas as pd
>>> pd.reset_option('all')
html.border has been deprecated, use display.html.border instead
(currently both are identical)
: boolean
use_inf_as_null had been deprecated and will be removed in a future
version. Use `use_inf_as_na` instead.
>>>
从标准库的角度来看,这些不是真正的警告。熊猫实施自己的警告系统。grep -rn
在警告消息上运行表明,该pandas
警告系统已在core/config_init.py
以下位置实现:
$ grep -rn "html.border has been deprecated"
core/config_init.py:207:html.border has been deprecated, use display.html.border instead
进一步的追踪表明,我没有时间这样做。而且您可能也不是。希望这可以使您免于跌倒,或者可以激发某人找出如何真正压制这些消息的方法!
警告很烦人。如其他答案所述,您可以使用以下方法抑制它们:
import warnings
warnings.simplefilter(action='ignore', category=FutureWarning)
但是,如果要一一处理它们,并且要管理更大的代码库,将很难找到引起警告的代码行。由于警告与错误不同,因此代码回溯不会附带警告。为了跟踪类似错误的警告,您可以在代码顶部编写以下代码:
import warnings
warnings.filterwarnings("error")
但是,如果代码库更大,并且正在导入一堆其他库/程序包,则各种警告将开始作为错误发出。为了仅将某些类型的警告(在您的情况下为FutureWarning)引发为错误,您可以编写:
import warnings
warnings.simplefilter(action='error', category=FutureWarning)
warnings....ignore
之前的import pandas...
造成FutureWarning
被忽略。