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If you're new to Flask and want to learn how to create templates using HTML, this beginner's guide is for you. Flask is a micro web framework written in Python that allows you to build web applications quickly and easily. Templates are a key component of web development, and Flask uses the Jinja template library to render them. In this guide, you'll learn how to create a templates directory for your Flask project, write an HTML file, create a Python script, and use Flask's render_template function to display your template on a web page.
Now, let's get started. Firstly, create a directory for your project templates using cmd:
(venv) mkdir C:\Users\gardi\flask-tutorial\templates
This command will create a new directory called "templates" in your project folder. All of your HTML templates will be stored in this directory.
For example, let's create an HTML file and write "Hello World of Programming!" inside it in blue color:
<html> <body> <h1 style='color:blue'>Hello World of Programming!</h1> </body> </html>
Now let's create a Python script and save it as "hello1.py".
At the beginning of the script, we have to import Flask and render_template:
from flask import Flask, render_template
Then create the app:
app = Flask(__name__)
We define a route "hello" to return the "hello.html" template using render_template:
def hello(): return render_template('hello.html')
Finally, we run the app:
if __name__ == "__main__": app.run(debug=True)
Inside cmd run the Python script with the command:
Open your localhost:
A web page like the following should be opened:
In conclusion, this beginner's guide provides a clear and concise explanation of how to create templates in Flask using HTML and the Jinja template library. By following the steps outlined in this guide, even those new to Flask can easily create a templates directory for their project, write an HTML file, create a Python script, and use Flask's render_template function to display their template on a web page. With this knowledge, developers can quickly and easily build web applications using Flask.
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