Introduction

Flask is a versatile Python web framework that can be used to build web applications of various complexities. In this guide, we'll walk you through creating a simple blog with Flask. You'll learn how to set up your Flask application, create blog posts, and display them to users. Let's get started!


Step 1: Setting Up Your Flask Application

Before you can create a blog, make sure you have a Flask application. If not, you can create a basic Flask app like this:

from flask import Flask, render_template, request
app = Flask(__name)

Step 2: Creating the Blog Post Model

To represent blog posts, define a model. Here's an example of a simple model for a "BlogPost" with a title and content:

class BlogPost:
    def __init__(self, title, content):
        self.title = title
        self.content = content

Step 3: Creating Routes

Create routes to handle displaying and creating blog posts. Here's an example of a route to display a list of blog posts:

@app.route('/')
def index():
    # Create sample blog posts
    posts = [
        BlogPost("First Post", "This is the content of the first blog post."),
        BlogPost("Second Post", "This is the content of the second blog post.")
    ]
    return render_template('index.html', posts=posts)

Create an HTML template to display the list of posts.


Step 4: Creating HTML Templates

Create HTML templates to render your blog posts. Here's an example of an "index.html" template:

<!DOCTYPE html>
<html>
<head>
    <title>My Blog</title>
</head>
<body>
    <h1>Welcome to My Blog</h1>
    <ul>
        {% for post in posts %}
            <li>
                <h2>{{ post.title }}</h2>
                <p>{{ post.content }}</p>
            </li>
        {% endfor %}
    </ul>
</body>
</html>

Step 5: Running Your Application

As usual, run your Flask application with the following code at the end of your script:

if __name__ == '__main__':
    app.run()

Now, you can run your application with the command python your_app.py and access the blog at the root URL.


Conclusion

Creating a simple blog with Flask is a great way to start learning web development with Flask. You've learned how to set up your application, create routes, and display blog posts to users. You can further expand this project by adding features like user authentication, comments, and more advanced styling.