DEPR: Remove deprecated Timestamp.freq (#49365)

* DEPR: Timestamp.freq

* __new__, doc

* update pickle tests

* update docs

* update asvs

* more whatsnew

Author: jbrockmendel

asv_bench/benchmarks/tslibs/timestamp.py

@@ -50,62 +50,58 @@ def time_from_pd_timestamp(self):
 
 
 class TimestampProperties:
-    _freqs = [None, "B"]
-    params = [_tzs, _freqs]
-    param_names = ["tz", "freq"]
+    params = [_tzs]
+    param_names = ["tz"]
 
-    def setup(self, tz, freq):
-        self.ts = Timestamp("2017-08-25 08:16:14", tzinfo=tz, freq=freq)
+    def setup(self, tz):
+        self.ts = Timestamp("2017-08-25 08:16:14", tzinfo=tz)
 
-    def time_tz(self, tz, freq):
+    def time_tz(self, tz):
         self.ts.tz
 
-    def time_dayofweek(self, tz, freq):
+    def time_dayofweek(self, tz):
         self.ts.dayofweek
 
-    def time_dayofyear(self, tz, freq):
+    def time_dayofyear(self, tz):
         self.ts.dayofyear
 
-    def time_week(self, tz, freq):
+    def time_week(self, tz):
         self.ts.week
 
-    def time_quarter(self, tz, freq):
+    def time_quarter(self, tz):
         self.ts.quarter
 
-    def time_days_in_month(self, tz, freq):
+    def time_days_in_month(self, tz):
         self.ts.days_in_month
 
-    def time_freqstr(self, tz, freq):
-        self.ts.freqstr
-
-    def time_is_month_start(self, tz, freq):
+    def time_is_month_start(self, tz):
         self.ts.is_month_start
 
-    def time_is_month_end(self, tz, freq):
+    def time_is_month_end(self, tz):
         self.ts.is_month_end
 
-    def time_is_quarter_start(self, tz, freq):
+    def time_is_quarter_start(self, tz):
         self.ts.is_quarter_start
 
-    def time_is_quarter_end(self, tz, freq):
+    def time_is_quarter_end(self, tz):
         self.ts.is_quarter_end
 
-    def time_is_year_start(self, tz, freq):
+    def time_is_year_start(self, tz):
         self.ts.is_year_start
 
-    def time_is_year_end(self, tz, freq):
+    def time_is_year_end(self, tz):
         self.ts.is_year_end
 
-    def time_is_leap_year(self, tz, freq):
+    def time_is_leap_year(self, tz):
         self.ts.is_leap_year
 
-    def time_microsecond(self, tz, freq):
+    def time_microsecond(self, tz):
         self.ts.microsecond
 
-    def time_month_name(self, tz, freq):
+    def time_month_name(self, tz):
         self.ts.month_name()
 
-    def time_weekday_name(self, tz, freq):
+    def time_weekday_name(self, tz):
         self.ts.day_name()
 
 

doc/redirects.csv

@@ -1321,8 +1321,6 @@ generated/pandas.Timestamp.daysinmonth,../reference/api/pandas.Timestamp.daysinm
 generated/pandas.Timestamp.dst,../reference/api/pandas.Timestamp.dst
 generated/pandas.Timestamp.floor,../reference/api/pandas.Timestamp.floor
 generated/pandas.Timestamp.fold,../reference/api/pandas.Timestamp.fold
-generated/pandas.Timestamp.freq,../reference/api/pandas.Timestamp.freq
-generated/pandas.Timestamp.freqstr,../reference/api/pandas.Timestamp.freqstr
 generated/pandas.Timestamp.fromisoformat,../reference/api/pandas.Timestamp.fromisoformat
 generated/pandas.Timestamp.fromordinal,../reference/api/pandas.Timestamp.fromordinal
 generated/pandas.Timestamp.fromtimestamp,../reference/api/pandas.Timestamp.fromtimestamp

doc/source/reference/arrays.rst

@@ -157,8 +157,6 @@ Methods
    Timestamp.day_name
    Timestamp.dst
    Timestamp.floor
-   Timestamp.freq
-   Timestamp.freqstr
    Timestamp.fromordinal
    Timestamp.fromtimestamp
    Timestamp.isocalendar

doc/source/whatsnew/v0.24.0.rst

@@ -1357,6 +1357,7 @@ the object's ``freq`` attribute (:issue:`21939`, :issue:`23878`).
 *New behavior*:
 
 .. ipython:: python
+    :okexcept:
     :okwarning:
 
     ts = pd.Timestamp('1994-05-06 12:15:16', freq=pd.offsets.Hour())

doc/source/whatsnew/v2.0.0.rst

@@ -250,6 +250,7 @@ Deprecations
 
 Removal of prior version deprecations/changes
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+- Removed deprecated :attr:`Timestamp.freq`, :attr:`Timestamp.freqstr` and argument ``freq`` from the :class:`Timestamp` constructor and :meth:`Timestamp.fromordinal` (:issue:`14146`)
 - Removed deprecated :class:`CategoricalBlock`, :meth:`Block.is_categorical`, require datetime64 and timedelta64 values to be wrapped in :class:`DatetimeArray` or :class:`TimedeltaArray` before passing to :meth:`Block.make_block_same_class`, require ``DatetimeTZBlock.values`` to have the correct ndim when passing to the :class:`BlockManager` constructor, and removed the "fastpath" keyword from the :class:`SingleBlockManager` constructor (:issue:`40226`, :issue:`40571`)
 - Removed deprecated module ``pandas.core.index`` (:issue:`30193`)
 - Removed deprecated alias ``pandas.core.tools.datetimes.to_time``, import the function directly from ``pandas.core.tools.times`` instead (:issue:`34145`)

pandas/_libs/tslibs/nattype.pyx

@@ -685,8 +685,6 @@ class NaTType(_NaT):
         ----------
         ordinal : int
             Date corresponding to a proleptic Gregorian ordinal.
-        freq : str, DateOffset
-            Offset to apply to the Timestamp.
         tz : str, pytz.timezone, dateutil.tz.tzfile or None
             Time zone for the Timestamp.
 

pandas/_libs/tslibs/timestamps.pxd

@@ -15,15 +15,13 @@ from pandas._libs.tslibs.offsets cimport BaseOffset
 cdef _Timestamp create_timestamp_from_ts(int64_t value,
                                          npy_datetimestruct dts,
                                          tzinfo tz,
-                                         BaseOffset freq,
                                          bint fold,
                                          NPY_DATETIMEUNIT reso=*)
 
 
 cdef class _Timestamp(ABCTimestamp):
     cdef readonly:
         int64_t value, nanosecond, year
-        BaseOffset _freq
         NPY_DATETIMEUNIT _creso
 
     cdef bint _get_start_end_field(self, str field, freq)
@@ -34,7 +32,5 @@ cdef class _Timestamp(ABCTimestamp):
     cpdef datetime to_pydatetime(_Timestamp self, bint warn=*)
     cdef bint _compare_outside_nanorange(_Timestamp self, datetime other,
                                          int op) except -1
-    cpdef void _set_freq(self, freq)
-    cdef _warn_on_field_deprecation(_Timestamp self, freq, str field)
     cdef bint _compare_mismatched_resos(_Timestamp self, _Timestamp other, int op)
     cdef _Timestamp _as_creso(_Timestamp self, NPY_DATETIMEUNIT reso, bint round_ok=*)

pandas/_libs/tslibs/timestamps.pyi

@@ -47,12 +47,10 @@ class Timestamp(datetime):
         tzinfo: _tzinfo | None = ...,
         *,
         nanosecond: int | None = ...,
-        freq: int | None | str | BaseOffset = ...,
         tz: str | _tzinfo | None | int = ...,
         unit: str | int | None = ...,
         fold: int | None = ...,
     ) -> _DatetimeT | NaTType: ...
-    def _set_freq(self, freq: BaseOffset | None) -> None: ...
     @classmethod
     def _from_value_and_reso(
         cls, value: int, reso: int, tz: _tzinfo | None
@@ -89,7 +87,6 @@ class Timestamp(datetime):
     def fromordinal(
         cls: type[_DatetimeT],
         ordinal: int,
-        freq: str | BaseOffset | None = ...,
         tz: _tzinfo | str | None = ...,
     ) -> _DatetimeT: ...
     @classmethod
@@ -176,7 +173,7 @@ class Timestamp(datetime):
     def is_year_end(self) -> bool: ...
     def to_pydatetime(self, warn: bool = ...) -> datetime: ...
     def to_datetime64(self) -> np.datetime64: ...
-    def to_period(self, freq: BaseOffset | str | None = ...) -> Period: ...
+    def to_period(self, freq: BaseOffset | str = ...) -> Period: ...
     def to_julian_date(self) -> np.float64: ...
     @property
     def asm8(self) -> np.datetime64: ...