BF: Only apply date formatting if column is datetime type

funpack/exporting.py

@@ -89,12 +89,13 @@ def formatColumn(col,
 
     # fall back to date/time formatting
     # if relevant for this column
-    if formatter is None:
-        if   vtype == util.CTYPES.date:
-            formatter = dateFormat
-        elif vtype == util.CTYPES.time or \
-             pdtypes.is_datetime64_any_dtype(series):
-            formatter = timeFormat
+    if formatter is None and pdtypes.is_datetime64_any_dtype(series):
+        # use dateFormat if we know the column
+        # is a date (and not datetime), otherwise
+        # use timeFormat if the column is a
+        # datetime, or unknown type.
+        if vtype == util.CTYPES.date: formatter = dateFormat
+        else:                         formatter = timeFormat
 
     if formatter is not None:
         log.debug('Formatting column %s%s with %s formatter',