如何连接字符串并为其添加html标签？

string1 = "Hello"
string2 = "World"
result = string1 + " " + string2
html_result = "<h1>" + result + "</h1>"
print(html_result)

<h1>Hello World</h1>

string1 = "Hello"
string2 = "World"
result = "{} {}".format(string1, string2)
html_result = "<h1>{}</h1>".format(result)
print(html_result)

<h1>Hello World</h1>

strings = ["Hello", "World"]
result = " ".join(strings)
html_result = "<h1>{}</h1>".format(result)
print(html_result)

<h1>Hello World</h1>