Fixed source file deletion bug

ncmltransformdemo/metadatatransformer.py

@@ -31,7 +31,7 @@ class MetadataTransformer:
         """
         self.nc_dump_path = os.path.join(
             self._out_path,
-            self.in_file.replace(".nc", ".txt")
+            self.in_file.replace(".nc", "_dumped.txt")
         )
 
         cmd = " ".join(["ncdump", "-h", self.in_path, ">", self.nc_dump_path])
@@ -50,7 +50,7 @@ class MetadataTransformer:
 
         self.nc_classic_path = os.path.join(
             self._out_path,
-            self.nc_dump_path.replace(".txt", ".nc")
+            self.nc_dump_path.replace(".txt", "_classic.nc")
         )
 
         cmd = " ".join(["ncgen", "-k", "classic", "-o", self.nc_classic_path, self.nc_dump_path])