DOC: unused Series axis parameter arbitrarily defaults to 0 or None

Pandas version checks

• I have checked that the issue still exists on the latest versions of the docs on main here

Location of the documentation

https://pandas.pydata.org/docs/reference/api/pandas.Series.add.html - example of defaulting to 0 https://pandas.pydata.org/docs/reference/api/pandas.Series.argmin.html - example of defaulting to None

Documentation problem

As a new user and contributor the Series axis parameter has been confusing to me. I now know it is not used for Series and only exists for compatibility with DataFrame. However, it is also confusing that it seems to arbitrarily default to either 0 or None. Does this difference matter for different methods?

Suggested fix for documentation

Unless there is a reason why different methods have default axis as 0 or None, I propose changing all Series method axis parameters to default to either 0 or None. This will make the parameter and the docs more clear.

[phofl]

I would prefer keeping the defaults in line with the DataFrame methods

[jackgoldsmith4]

Closing because the Series axis parameter won’t change. I now understand it is 0 or None solely based on the corresponding DataFrame method. I may open another issue or question about argmin and argmax more generally