Fixed #141

The error was cased by the 'None' value of the 'template_path' from

template_dir = os.path.dirname(template_path)

Author: chinyeungli

about_code_tool/about.py

@@ -1224,9 +1224,7 @@ def write_to_csv(self, output_path):
                 row_data = about_object.get_row_data(relative_path, custom_keys)
                 csv_writer.writerow(row_data)
 
-    def generate_attribution(self,
-                             template_path='templates/default.html',
-                             limit_to=None):
+    def generate_attribution(self, template_path, limit_to=None):
         """
         Generate an attribution file from the current list of ABOUT objects.
         The optional `limit_to` parameter allows to restrict the generated

about_code_tool/genattrib.py

@@ -133,7 +133,8 @@ def main(parser, options, args):
     overwrite = options.overwrite
     verbosity = options.verbosity
     mapping_config = options.mapping
-    template_location = options.template_location
+    template_location = options.template_location \
+        if options.template_location else "templates/default.html"
 
     if options.version:
         print('ABOUT tool {0}\n{1}'.format(__version__, __copyright__))