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One way to export Python output to an HTML file is by using a Python library called "Jinja2". Here are the steps for using Jinja2 to export Python output to HTML:

Install Jinja2: You can install Jinja2 using pip by running the following command in your terminal or command prompt: pip install Jinja2
Create a template file: Create an HTML file with the desired layout and placeholders where you want your Python output to be displayed. For example, you could create a file called "template.html" with the following content:

<!DOCTYPE html>
<html>
<head>
    <title>My Webpage</title>
</head>
<body>
    <h1>{{ heading }}</h1>
    <p>{{ content }}</p>
</body>
</html>

Create a Python script: In your Python script, import the Jinja2 library and create a new instance of the Environment class that tells Jinja2 where to find your template file. Then, create a dictionary with your Python data that will be used to fill in the placeholders in your template. Finally, use the render() method of the Jinja2 Template class to generate the final HTML code and save it to a file. Here's an example Python script:

from jinja2 import Environment, FileSystemLoader

# Tell Jinja2 where to find the template file
env = Environment(loader=FileSystemLoader('.'))
template = env.get_template('template.html')

# Create a dictionary with your Python data
data = {'heading': 'Welcome to my webpage', 'content': 'This is some content.'}

# Generate the HTML code using Jinja2 and save it to a file
output = template.render(data)
with open('output.html', 'w') as f:
    f.write(output)

Run your Python script: Run your Python script and the final HTML file will be saved in the same directory as your script. Open the file in a web browser to see the output.

Note: You can customize your template and data to fit your specific needs. Also, there are other Python libraries that can be used for exporting Python output to HTML, such as Pandas and BeautifulSoup.