[Python] HTMLBody does not compile in Python when generating an Outlook email

I am writing a Python module to generate an outlook e-mail with an attachment using win32com. All works fine except for the formatting of the HTMLBody. As far as I have researched, it is impossible to do the advance formatting of the HTMLBody in Python, you can only do it in html. I have used the following link's code as my primary concern was for my body to have the current date and time whenever an e-mail is generated https://www.geeksforgeeks.org/html-datetime-attribute/.

def __Emailer(subject, recipient, cc, auto=True):
import win32com.client as win32

outlook = win32.Dispatch('outlook.application')
mail = outlook.CreateItem(0)
mail.To = recipient
mail.CC = cc
mail.Subject = subject

mail.HTMLBody = """
<html>
<head></head>
<body>


<h1>GeeksforGeeks</h1>
<h3>Approach 2: Using &lt;time&gt; Tag with JavaScript</h3>
<time id="current-time"></time>

<script>
function updateTime() {
const now = new Date();
const timeElement = document.getElementById("current-time");
const options = { weekday: 'long', year: 'numeric', month: 'long', day: 'numeric' };
timeElement.dateTime = now.toISOString();
timeElement.innerHTML = 'Today is: ${now.toLocaleDateString(undefined, options)},
Time: ${now.toLocaleTimeString()'};
}

setInterval(updateTime, 1000);
updateTime();

</script>

<\body>


</html>

"""

mail.Attachments.Add(Source=r"C:\Users\project.xlsx")

if auto:
mail.Display(True)

else:
mail.open


But in my output I only get these h1 and h3 lines. So, basically, the inside of the <\script> does not work. Output)

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