This is a precommit hook that applies a patched version of prettier that recognizes the py-script and py-config tags and does not reformat their contents. The patch that has been applied to prettier is as follows:

--- a/src/language-html/utils/index.js
+++ b/src/language-html/utils/index.js
@@ -106,7 +106,8 @@ function isTextLikeNode(node) {
 function isScriptLikeTag(node) {
   return (
     node.type === "element" &&
-    (node.fullName === "script" ||
+    (node.fullName === "py-script" ||
+      node.fullName === "py-config" ||
+      node.fullName === "script" ||
       node.fullName === "style" ||
       node.fullName === "svg:style" ||
       (isUnknownNamespace(node) &&
-- 

This patched version of prettier is hosted at https://github.com/hoodmane/prettier/tree/pyscript. To update prettier to a new version:

1. clone hoodmane/prettier and checkout the pyscript-3.0.0-alpha.6 branch
2. git fetch upstream --tags
3. git rebase HEAD~1 --onto <NEW_TAG> where for instance NEW_TAG might be 3.0.0-alpha.7.
4. Force push this to hoodmane/prettier
5. yarn build (you may need to run npm i -g yarn to install yarn first).
6. In this repo, rm -rf dist
7. Copy the prettier/dist directory into this repo.
8. Commit the new version and tag it.