formatting

edocument.py

@@ -49,7 +49,7 @@ class Invoice(Invoice):
 
         if self.invoice.comment:
             notes.extend(self.invoice.comment.split('\n'))
-        if len(notes) > 0:
+        if notes:
             return '; '.join(notes)
 
     def invoice_line_tax(self, line):
@@ -75,10 +75,7 @@ class Invoice(Invoice):
     def taxident_data(self, tax_identifier):
         """ get tax-scheme-id and codes
         """
-        result = {
-            'code': None,
-            'id': None,
-            }
+        result = {'code': None, 'id': None}
 
         if tax_identifier:
             if tax_identifier.type == 'de_vat':
@@ -120,7 +117,7 @@ class Invoice(Invoice):
     def quote_text(self, text):
         """ replace critical chars
         """
-        if text is not None:
+        if text:
             return html.quote(text)
 
     def _get_template(self, version):