python flask developer
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flask is a lightweight web application framework for python that allows you to quickly build and deploy web applications. in this tutorial, we'll guide you through the process of creating a simple flask application, covering the basics of routing, templates, and more.
before we begin, make sure you have python and pip (python package installer) installed on your machine. you can download python from python.org and pip is usually included with python installation.
open a terminal and install flask using the following command:
create a new directory for your project and navigate into it. then, create a new file named app.py:
open app.py in your preferred code editor and add the following code:
this simple app defines a route for the root url ("/") that returns the "hello, world!" message. the if _name_ == '__main__': block ensures that the app only runs if the script is executed directly, not when imported as a module.
in the terminal, run your flask app:
visit http://127.0.0.1:5000/ in your web browser, and you should see the "hello, world!" message.
flask uses jinja2 templates for rendering html. create a new folder named templates inside your project directory. in this folder, create a file named index.html:
update your app.py to render this template:
now, when you visit the root url, it will render the html template with the dynamic message.
congratulations! you've created a simple flask application with routing, templates, and dynamic content. this is just the beginning; flask provides many features for building robust web applications. explore the official flask documentation for more in-depth information and advanced features. happy coding!
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