API: clean-up top-level namespace

[jorisvandenbossche]

Triggered by #13785, I looked at the top level namespace, and I was wondering if the following functions are needed:

• pd.Expr
• pd.pnow(): returns the current date as a Period with specified freq (API: why are we importing pandas.tseries.period.pnow into the pd namespace? #12641)
• pd.info()
• pd.groupby()
• match: "Compute locations of to_match into values" (imported from core/api.py from \core\algorithms.py together with factorize, unique and value_counts, but I don't think match is used anywhere in the docs)
• pd.Term

Quite a lot are already deprecated: TimeSeries, SparseTimeSeries, all rolling_ and expanding_ methods

I also learned the existence of pd.lreshape and pd.plot_params .. :-) (but the latter is mentioned in the docs, lreshape not).

[jreback]

I think there is an issue for pnow already

in any event I would make this a master issue and have checkboxes

[jorisvandenbossche]

Ah yes indeed: #12641 Good question :-)

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