Pandas: missing pandas.core.config in v0.25

[Borda]

Problem description

I need a print table with several columns by default for automatic test purposes while the default number of columns changed from version v0.23. I was using a simple check

if 'display.max_columns' in pandas.core.config._registered_options:
    pandas.set_option('display.max_columns', 20)

but this was broken from v0.25 since the config is missing

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: module 'pandas.core' has no attribute 'config'

I have checked the release notes but I dd not find any info about moving this property...

Code Sample

.core.config._registered_options

Expected Output

Extending the columns to be shown

Output of pd.show_versions()

INSTALLED VERSIONS
------------------
commit           : None
python           : 3.6.8.final.0
python-bits      : 64
OS               : Linux
OS-release       : 4.15.0-54-generic
machine          : x86_64
processor        : x86_64
byteorder        : little
LC_ALL           : None
LANG             : en_US.UTF-8
LOCALE           : en_US.UTF-8

pandas           : 0.25.0
numpy            : 1.15.4
pytz             : 2018.7
dateutil         : 2.7.5
pip              : 19.1.1

[jreback]

pandas.core has been private for quite a while

i would just call the pd.set_option()

[Borda]

@jreback well and pd.set_option() is there since when? what does it mean "quite a while"?

[jreback]

@jreback well and pd.set_option() is there since when? what does it mean "quite a while"?

years

[Borda]

does not say anything since we need some legacy pandas versions...

[jreback]

you are using kong private api

use at your own risk

[Borda]

sorry, but pandas.core.config does not look like private... :smiley:

[TomAugspurger]

Unfortunately, it's only documented as private: https://pandas.pydata.org/pandas-docs/stable/reference/index.html

Changing it to _core would likely be too disruptive at this stage.

[jreback]

Unfortunately, it's only documented as private: https://pandas.pydata.org/pandas-docs/stable/reference/index.html

Changing it to _core would likely be too disruptive at this stage.

i disagree

i am going to deprecate this

otherwise we will never get out of this hole

[TomAugspurger]

May be worth trying (starting with a DeprecationWarning, right?) Then
moving to FutureWarning?

On Mon, Jul 22, 2019 at 11:01 AM Jeff Reback [e-mail]
wrote:

Unfortunately, it's only documented as private:
https://pandas.pydata.org/pandas-docs/stable/reference/index.html

Changing it to _core would likely be too disruptive at this stage.

i disagree

i am going to deprecate this

otherwise we will never get out of this hole

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[jreback]

May be worth trying (starting with a DeprecationWarning, right?) Then moving to FutureWarning?
…

yeah maybe