List arrays in restart file at specified report date

misc/ecl.py

@@ -760,6 +760,10 @@ def date(self):
 
         # convert Eclipse date field to a Python date object
         return _intehead_date(intehead)
+
+    def arrays(self):
+        ecl_file = EclipseFile(self.root, self.ext)
+        return [list(ecl_file.cat.keys())[i][0] for i, _ in enumerate(ecl_file.cat)]
 
 
 class EclipseSummary (EclipseData):
@@ -1075,6 +1079,9 @@ def grid(self):
         # offload this routine to the grid object
         return self._grid.grid()
 
+    def arrays(self, when):
+        return self.at(when).arrays()
+
 
 class EclipseRFT (object):
     """Read data from an Eclipse RFT file."""