Do not save just spaces

beautiful_soup/app.py

@@ -23,7 +23,7 @@ def get_url_content( url ):
         except Exception as exception:
             raise exception
         with open( file_path, 'w' ) as file:
-            file.write( content )
+            file.write( content.strip() )
 
     return content
 
@@ -40,7 +40,11 @@ def extract_content( url ):
     if content is None :
         raise Exception('No main content found.')
 
-    return get_tags_text( content )
+    text = get_tags_text( content )
+    if text is None :
+        raise Exception('No text found.')
+
+    return text
 
 # Make request and get html content.
 def get_soup( url ):