MNT: deprecate epoch2num/num2epoch

jklymak · jklymak · commit ae9d651e30a2 · 2021-02-08T15:11:15.000-08:00
diff --git a/lib/matplotlib/dates.py b/lib/matplotlib/dates.py
@@ -1744,6 +1744,8 @@ def _get_interval(self):
         return self._interval
 
 
+@_api.deprecated("3.5",
+        alternative="mdates.date2num(datetime.utcfromtimestamp(e))")
 def epoch2num(e):
     """
     Convert UNIX time to days since Matplotlib epoch.
@@ -1764,7 +1766,7 @@ def epoch2num(e):
 
     return (dt + np.asarray(e)) / SEC_PER_DAY
 
-
+@_api.deprecated("3.5", alternative="mdates.num2date(e).timestamp()")
 def num2epoch(d):
     """
     Convert days since Matplotlib epoch to UNIX time.
