Merge pull request #1224 from PCMDI/acordonez-patch-1

Change xcdat_open default

Author: acordonez

pcmdi_metrics/io/xcdat_openxml.py

@@ -11,7 +11,10 @@
 
 
 def xcdat_open(
-    infile: Union[str, list], data_var: str = None, decode_times: bool = True, chunks={}
+    infile: Union[str, list],
+    data_var: str = None,
+    decode_times: bool = True,
+    chunks=None,
 ) -> xr.Dataset:
     """
     Open input file (netCDF, or xml generated by cdscan)