ENH: Make pd.Timestamp.astimezone() default to local timezone

[powellnorma]

Pandas version checks

• I have checked that this issue has not already been reported.

• I have confirmed this bug exists on the latest version of pandas.

• I have confirmed this bug exists on the main branch of pandas.

Reproducible Example

import pandas as pd
pd.Timestamp.now().astimezone()

However, for datetime objects this is no problem, it uses the local timezone as default:

from datetime import datetime
datetime.now().astimezone()

Issue Description

It would be great if Timestamp.astimezone() would work like it does for the original datetime, so that e.g. a function that accepts a datetime doesn't have to treat pd.Timestamp (which inherits datetime) differently

Expected Behavior

Timestamp.astimezone should work like it does for the original datetime (choosing the local timezone)

Installed Versions

pandas : 2.2.2
numpy : 1.26.4
pytz : 2022.7.1
dateutil : 2.8.2
Cython : 3.0.11
pytest : 7.4.0

[rhshadrach]

Thanks for the report. This is behaving as documented, so this is not a bug. Rephrased as an enhancement request.

cc @jbrockmendel for any thoughts.

[jbrockmendel]

I don't feel that strongly about this, but am not a fan of the implicit timezone behavior in the stdlib. Better to use explicit tz_localize and datetutil.tz.tzlocal()