diff --git a/fortran/build_help/sub_sizes.py b/fortran/build_help/sub_sizes.py
index 4261977..d69b6e8 100644
--- a/fortran/build_help/sub_sizes.py
+++ b/fortran/build_help/sub_sizes.py
@@ -3,55 +3,55 @@ import os
 from string import Template
 import sys
 
+
 def main():
-    
-    print ("Running sub_sizes")
+    print("Running sub_sizes")
+
     try:
         result = subprocess.check_output(["./sizes"])
-    except:
+    except OSError:
         result = subprocess.check_output(["sizes.exe"])
-    
+
     split_result = result.split()
-    
+
     if sys.version_info >= (3, ):
         if split_result[0].strip().decode() != "SIZES":
             raise ValueError("First line is not SIZES")
-        
-        subs = {"FOMP_SCHED_KIND" : split_result[1].strip().decode(),
-                "FOMP_LOCK_KIND" : split_result[2].strip().decode(),
-                "FOMP_NEST_LOCK_KIND" : split_result[3].strip().decode(),
-                "FOMP_SCHED_STATIC" : split_result[4].strip().decode(),
-                "FOMP_SCHED_DYNAMIC" : split_result[5].strip().decode(),
-                "FOMP_SCHED_GUIDED" : split_result[6].strip().decode(),
-                "FOMP_SCHED_AUTO" : split_result[7].strip().decode()
+
+        subs = {"FOMP_SCHED_KIND": split_result[1].strip().decode(),
+                "FOMP_LOCK_KIND": split_result[2].strip().decode(),
+                "FOMP_NEST_LOCK_KIND": split_result[3].strip().decode(),
+                "FOMP_SCHED_STATIC": split_result[4].strip().decode(),
+                "FOMP_SCHED_DYNAMIC": split_result[5].strip().decode(),
+                "FOMP_SCHED_GUIDED": split_result[6].strip().decode(),
+                "FOMP_SCHED_AUTO": split_result[7].strip().decode()
                 }
     else:
         if split_result[0].strip() != "SIZES":
             raise ValueError("First line is not SIZES")
-        
-        subs = {"FOMP_SCHED_KIND" : split_result[1].strip(),
-                "FOMP_LOCK_KIND" : split_result[2].strip(),
-                "FOMP_NEST_LOCK_KIND" : split_result[3].strip(),
-                "FOMP_SCHED_STATIC" : split_result[4].strip(),
-                "FOMP_SCHED_DYNAMIC" : split_result[5].strip(),
-                "FOMP_SCHED_GUIDED" : split_result[6].strip(),
-                "FOMP_SCHED_AUTO" : split_result[7].strip()
+
+        subs = {"FOMP_SCHED_KIND": split_result[1].strip(),
+                "FOMP_LOCK_KIND": split_result[2].strip(),
+                "FOMP_NEST_LOCK_KIND": split_result[3].strip(),
+                "FOMP_SCHED_STATIC": split_result[4].strip(),
+                "FOMP_SCHED_DYNAMIC": split_result[5].strip(),
+                "FOMP_SCHED_GUIDED": split_result[6].strip(),
+                "FOMP_SCHED_AUTO": split_result[7].strip()
                 }
-    
-    
+
     ompgen_temp_path = os.path.join("..", "ompgen.F90.template")
     ompgen_out_path = os.path.join("..", "ompgen.F90")
-    
+
     with open(ompgen_temp_path, "r") as ompgen_in:
         ompgen_template = Template(ompgen_in.read())
-        
+
         ompgen_string = ompgen_template.substitute(subs)
-        
-    
+
     with open(ompgen_out_path, "w") as ompgen_out:
         ompgen_out.write(ompgen_string)
-        
-    
-    print ("End sub_sizes")
+
+    print("End sub_sizes")
+
+
 if __name__ == "__main__":
-    main()
\ No newline at end of file
+    main()