How to install flask

To install Flask, you can follow the following steps: 1. Make sure Python is installed; 2. Open the command line terminal; 3. Enter the "pip install flask" command to install Flask; 4. Wait for the installation to complete. .

# Operating system for this tutorial: Windows 10 system, Dell G3 computer.

To install Flask, you can follow the steps below:

1. Make sure Python is installed. Flask is a Python-based web framework, so Python needs to be installed first. You can download and install Python from the official Python website (https://www.python.org).

2. Open a command line terminal (Command Prompt or PowerShell for Windows, Terminal for Mac).

3. Enter the following command at the command line to install Flask:

pip install flask

This will use the pip package manager to install Flask from the Python Package Index (PyPI ) Download and install Flask.

4. Wait for the installation to complete. Once the installation is complete, you will see a success message.

Now, you have successfully installed Flask. You can create a Flask application and start developing web applications.

The following is an example of a simple Flask application:

from flask import Flask app = Flask(__name__) @app.route('/') def hello(): return 'Hello, World!' if __name__ == '__main__': app.run()

Save the above code as a Python file (such as app.py), and then run the following command in the command line to start the application :

python app.py

Flask will run on localhost and listen on the default port (5000). You can view the application's output by visiting http://localhost:5000 in your browser.

This is just a simple example, you can extend and customize your Flask application according to your needs.

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