DOC Fix EX01 issues in docstrings (#51440)

* DOC Fix EX01 issues in docstrings

* DOC Fix EX01- correct var name+added to example

---------

Co-authored-by: Patrick Hoefler <61934744+phofl@users.noreply.github.com>

Author: DeaMariaLeon

ci/code_checks.sh

@@ -91,7 +91,6 @@ if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
         pandas.Series.size \
         pandas.Series.T \
         pandas.Series.hasnans \
-        pandas.Series.to_timestamp \
         pandas.Series.to_list \
         pandas.Series.__iter__ \
         pandas.Series.keys \
@@ -218,7 +217,6 @@ if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
         pandas.Period.year \
         pandas.Period.asfreq \
         pandas.Period.now \
-        pandas.Period.to_timestamp \
         pandas.arrays.PeriodArray \
         pandas.Interval.closed \
         pandas.Interval.left \
@@ -562,7 +560,6 @@ if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
         pandas.DataFrame.swapaxes \
         pandas.DataFrame.first_valid_index \
         pandas.DataFrame.last_valid_index \
-        pandas.DataFrame.to_timestamp \
         pandas.DataFrame.attrs \
         pandas.DataFrame.plot \
         pandas.DataFrame.sparse.density \

pandas/_libs/tslibs/period.pyx

@@ -1841,6 +1841,13 @@ cdef class _Period(PeriodMixin):
         Returns
         -------
         Timestamp
+
+        Examples
+        --------
+        >>> period = pd.Period('2023-1-1', freq='D')
+        >>> timestamp = period.to_timestamp()
+        >>> timestamp
+        Timestamp('2023-01-01 00:00:00')
         """
         how = validate_end_alias(how)
 

pandas/core/frame.py

@@ -11010,6 +11010,37 @@ def to_timestamp(
         -------
         DataFrame
             The DataFrame has a DatetimeIndex.
+
+        Examples
+        --------
+        >>> idx = pd.PeriodIndex(['2023', '2024'], freq='Y')
+        >>> d = {'col1': [1, 2], 'col2': [3, 4]}
+        >>> df1 = pd.DataFrame(data=d, index=idx)
+        >>> df1
+              col1   col2
+        2023     1      3
+        2024	 2      4
+
+        The resulting timestamps will be at the beginning of the year in this case
+
+        >>> df1 = df1.to_timestamp()
+        >>> df1
+                    col1   col2
+        2023-01-01     1      3
+        2024-01-01     2      4
+        >>> df1.index
+        DatetimeIndex(['2023-01-01', '2024-01-01'], dtype='datetime64[ns]', freq=None)
+
+        Using `freq` which is the offset that the Timestamps will have
+
+        >>> df2 = pd.DataFrame(data=d, index=idx)
+        >>> df2 = df2.to_timestamp(freq='M')
+        >>> df2
+                    col1   col2
+        2023-01-31     1      3
+        2024-01-31     2      4
+        >>> df2.index
+        DatetimeIndex(['2023-01-31', '2024-01-31'], dtype='datetime64[ns]', freq=None)
         """
         new_obj = self.copy(deep=copy)
 

pandas/core/series.py

@@ -5710,6 +5710,35 @@ def to_timestamp(
         Returns
         -------
         Series with DatetimeIndex
+
+        Examples
+        --------
+        >>> idx = pd.PeriodIndex(['2023', '2024', '2025'], freq='Y')
+        >>> s1 = pd.Series([1, 2, 3], index=idx)
+        >>> s1
+        2023    1
+        2024    2
+        2025    3
+        Freq: A-DEC, dtype: int64
+
+        The resulting frequency of the Timestamps is `YearBegin`
+
+        >>> s1 = s1.to_timestamp()
+        >>> s1
+        2023-01-01    1
+        2024-01-01    2
+        2025-01-01    3
+        Freq: AS-JAN, dtype: int64
+
+        Using `freq` which is the offset that the Timestamps will have
+
+        >>> s2 = pd.Series([1, 2, 3], index=idx)
+        >>> s2 = s2.to_timestamp(freq='M')
+        >>> s2
+        2023-01-31    1
+        2024-01-31    2
+        2025-01-31    3
+        Freq: A-JAN, dtype: int64
         """
         if not isinstance(self.index, PeriodIndex):
             raise TypeError(f"unsupported Type {type(self.index).__name__}")