Skip reading for dry-run.

climax/main/preprocess_ERA5.py

@@ -53,6 +53,15 @@ if __name__ == '__main__':
                                  '_'.join(['^ERA5', var, '[0-9]{4}.nc$']))
             ymin, ymax = (re.search('[0-9]{4}', files[0].name)[0],
                           re.search('[0-9]{4}', files[-1].name)[0])
+            LogConfig.init_log('Aggregating ERA5 years: {}'.format(
+                '-'.join([ymin, ymax])))
+            LOGGER.info(('\n ' + (len(__name__) + 1) * ' ').join(
+                        ['{}'.format(file) for file in files]))
+
+            # check for dry-run
+            if args.dry_run:
+                LOGGER.info('Dry run: No output produced.')
+                continue
 
             # check if aggregated file exists
             filename = '_'.join(['ERA5', var, ymin, ymax])
@@ -64,15 +73,6 @@ if __name__ == '__main__':
             # aggregate files for different years into a single file using
             # xarray and dask
             ds = xr.open_mfdataset(files, parallel=True).compute()
-            LogConfig.init_log('Aggregating ERA5 years: {}'.format(
-                '-'.join([ymin, ymax])))
-            LOGGER.info(('\n ' + (len(__name__) + 1) * ' ').join(
-                        ['{}'.format(file) for file in files]))
-
-            # check for dry-run
-            if args.dry_run:
-                LOGGER.info('Dry run: No output produced.')
-                continue
 
             # aggregate hourly data to daily data: resample in case of missing
             # days