Add doc string to NaT and Timestamp

pandas/_libs/tslibs/nattype.pyx

@@ -354,7 +354,6 @@ class NaTType(_NaT):
  utctimetuple = _make_error_func('utctimetuple', datetime)
  timetz = _make_error_func('timetz', datetime)
  timetuple = _make_error_func('timetuple', datetime)
- strptime = _make_error_func('strptime', datetime)
  strftime = _make_error_func('strftime', datetime)
  isocalendar = _make_error_func('isocalendar', datetime)
  dst = _make_error_func('dst', datetime)
@@ -368,6 +367,15 @@ class NaTType(_NaT):
  # The remaining methods have docstrings copy/pasted from the analogous
  # Timestamp methods.
 
+ strptime = _make_error_func('strptime',
+ """
+ Timestamp.strptime(string, format)
+
+ Function is not implemented as the behavior of datetime.strptime()
+ differs in Python 2 and Python 3.
+ """
+ )
+
  utcfromtimestamp = _make_error_func('utcfromtimestamp', # noqa:E128
  """
  Timestamp.utcfromtimestamp(ts)

pandas/_libs/tslibs/timestamps.pyx

@@ -680,6 +680,12 @@ class Timestamp(_Timestamp):
  # Issue 25016. As strptime with %z is not supported in Python 2.
  @classmethod
  def strptime(cls, date_string, format):
+ """
+ Timestamp.strptime(string, format)
+
+ Function is not implemented as the behavior of datetime.strptime()
+ differs in Python 2 and Python 3.
+ """
  raise NotImplementedError("Timestamp.strptime() is not implmented."
  "Use to_datetime() to parse date strings.")