Revise paste computer color code mirror

from flask import Flask, request, render_template_string
import subprocess
import tempfile
import os

app = Flask(__name__)

HTML = """

<!DOCTYPE html>
<html>
<head>
<title>My Computer</title>
<meta charset="UTF-8">

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.15/codemirror.min.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.15/theme/ambiance.min.css">

<form method="post" id="code-form">
    <textarea id="code" name="code">{{ code }}

""" @app.route("/", methods=["GET", "POST"]) def index(): code = "" output = "" mode = "python" if request.method == "POST": code = request.form.get("code", "") mode = request.form.get("mode", "") if mode == "python": try: result = subprocess.check_output(["python3", "-c", code], stderr=subprocess.STDOUT).decode() output = result except subprocess.CalledProcessError as e: output = e.output.decode() elif mode == "sh": try: cleaned = code.replace('\r', '') result = subprocess.check_output(cleaned, shell=True, stderr=subprocess.STDOUT, executable="/bin/bash").decode() output = result except subprocess.CalledProcessError as e: output = e.output.decode() elif mode == "c": with tempfile.NamedTemporaryFile(delete=False, suffix=".c") as tmp: tmp.write(code.encode()) tmp.flush() exe = tmp.name + ".out" comp = subprocess.run(["gcc", tmp.name, "-o", exe], capture_output=True) if comp.returncode != 0: output = comp.stderr.decode() else: run = subprocess.run([exe], capture_output=True) output = run.stdout.decode() + run.stderr.decode() os.unlink(tmp.name) if os.path.exists(exe): os.unlink(exe) elif mode == "cpp": with tempfile.NamedTemporaryFile(delete=False, suffix=".cpp") as tmp: tmp.write(code.encode()) tmp.flush() exe = tmp.name + ".out" comp = subprocess.run(["g++", tmp.name, "-o", exe], capture_output=True) if comp.returncode != 0: output = comp.stderr.decode() else: run = subprocess.run([exe], capture_output=True) output = run.stdout.decode() + run.stderr.decode() os.unlink(tmp.name) if os.path.exists(exe): os.unlink(exe) elif mode == "html": output = "HTML code opened in new tab." elif mode == "js": try: run = subprocess.check_output(["node", "-e", code], stderr=subprocess.STDOUT).decode() output = run except subprocess.CalledProcessError as e: output = e.output.decode() return render_template_string(HTML, code=code, output=output, mode=mode) if __name__ == "__main__": app.run(port=8000, debug=False)