feat(1019-squares-of-a-sorted-array): add py3 solution

.scripts/addnew

@@ -1,6 +1,7 @@
 #!/usr/bin/env zx
 
 import Turndown from "turndown";
+import * as cheerio from "cheerio";
 import { client, gql } from "./graphql.mjs";
 
 const langExt = { python3: "py", nodejs: "js", cpp: "cpp" };
@@ -35,14 +36,12 @@ const questionDir = `${questionIdPadded}_${q.titleSlug}`;
 const solutionDir = `${questionDir}/${language}`;
 const solutionFilePath = `${solutionDir}/solution.${langExt[language]}`;
 
+const $ch = cheerio.load(q.content);
+
+$ch("pre").wrapInner("<code></code>");
+
 const td = new Turndown({});
-td.addRule("pre-code", {
-  filter: "pre",
-  replacement(content) {
-    return "```\n" + content + "```";
-  },
-});
-const mdBody = td.turndown(q.content);
+const mdBody = td.turndown($ch("body").html());
 
 await $`mkdir -p ${solutionDir}`;
 await $`touch ${solutionFilePath}`;