#509

Author: John Bogaardt

chainladder/__init__.py

@@ -42,4 +42,4 @@ def auto_sparse(auto_sparse=True):
 from chainladder.methods import *  # noqa (API Import)
 from chainladder.workflow import *  # noqa (API Import)
 
-__version__ = "0.8.19"
+__version__ = "0.8.20"

chainladder/core/base.py

@@ -58,8 +58,6 @@ def _set_development(data, development, development_format, origin_date):
             development_date = TriangleBase._to_datetime(
                 data, development, period_end=True, format=development_format
             )
-            # if np.all(development_date.dt.strftime('%m-%d') == '01-01'):
-            #    development_date = pd.Series(pd.PeriodIndex(development_date, freq="Y").to_timestamp(how='e'))
         else:
             o_max = pd.Period(
                 origin_date.max(), freq=TriangleBase._get_grain(origin_date)
@@ -276,9 +274,9 @@ def _get_grain(dates, trailing=False, kind="origin"):
         months = dates.dt.month.unique()
         diffs = np.diff(np.sort(months))
         if len(dates.unique()) == 1:
-            grain = "Y"
+            grain = "Y" if float('.'.join(pd.__version__.split('.')[:-1])) < 2.2 else "A"
         elif len(months) == 1:
-            grain = "Y"
+            grain = "Y" if float('.'.join(pd.__version__.split('.')[:-1])) < 2.2 else "A"
         elif np.all(diffs == 6):
             grain = "2Q"
         elif np.all(diffs == 3):

chainladder/core/triangle.py

@@ -330,7 +330,8 @@ def origin(self):
         if self.is_pattern and len(self.odims) == 1:
             return pd.Series(["(All)"])
         else:
-            freq = {"Y": "Y", "S": "2Q", "H": "2Q"}.get(
+            freq = {"Y": "Y" if float('.'.join(pd.__version__.split('.')[:-1])) < 2.2 else "A", 
+                    "S": "2Q", "H": "2Q"}.get(
                 self.origin_grain, self.origin_grain
             )
             freq = freq if freq == "M" else freq + "-" + self.origin_close
@@ -339,7 +340,7 @@ def origin(self):
     @origin.setter
     def origin(self, value):
         self._len_check(self.origin, value)
-        freq = {"Y": "Y", "S": "2Q"}.get(self.origin_grain, self.origin_grain)
+        freq = {"Y": "Y" if float('.'.join(pd.__version__.split('.')[:-1])) < 2.2 else "A", "S": "2Q"}.get(self.origin_grain, self.origin_grain)
         freq = freq if freq == "M" else freq + "-" + self.origin_close
         value = pd.PeriodIndex(list(value), freq=freq)
         self.odims = value.to_timestamp().values

setup.py

@@ -14,7 +14,7 @@
 descr = "Chainladder Package - P&C Loss Reserving package "
 name = 'chainladder'
 url = 'https://github.com/casact/chainladder-python'
-version='0.8.19' # Put this in __init__.py
+version='0.8.20' # Put this in __init__.py
 
 data_path = ''
 setup(