first commit

screens/rendering/attr_string.py

@@ -0,0 +1,10 @@
+import html as html_lib
+
+
+def _attr_string(attrs, extra_style):
+    parts = [f'style="{html_lib.escape(extra_style)}"']
+    for k, v in attrs.items():
+        if v in (None, "", False):
+            continue
+        parts.append(html_lib.escape(str(k)) if v is True else f'{html_lib.escape(str(k))}="{html_lib.escape(str(v))}"')
+    return " ".join(parts)