ENH: classmethods for pd.period_range & pd.date_range

[max-sixty]

Floating an idea: pd.PeriodIndex.from_range & pd.DatetimeIndex.from_range as classmethods to mirror pd.period_range & pd.date_range respectively. This encapsulates constructors on the class.

Also could have pd.DatetimeIndex.from_dataframe for #12967

[jreback]

@MaximilianR why? that's seems like more typing to me.

[max-sixty]

why? that's seems like more typing to me.

For the encapsulation - i.e. the ways of creating an instance are all listed on the class. It's also a nice pythonic approach.

While I wouldn't think removing the existing methods would be worth the effort (and maybe that makes adding these new ones a non-starter), the approach of putting constructors on classes in future also helps to keep the pd. namespace cleaner

[jreback]

you realize that these are convenience functions that just call the constructor now (albeit with a default for the freq) Not sure why adding something is helpful here. It would just be another name.

[max-sixty]

I didn't realize they were such a thin wrapper. Closing for now.