pip install flask in python

January 2, 2024

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Flask is a lightweight web application framework for Python. It is widely used for building web applications and APIs due to its simplicity and flexibility. In this tutorial, we’ll guide you through the process of installing Flask using pip and provide a simple code example to get you started.
Before you can install Flask, you need to have Python installed on your system. You can download the latest version of Python from the official Python website. Follow the installation instructions for your operating system.
Open a terminal (Linux or macOS) or command prompt (Windows). This is where you’ll run the pip commands to install Flask.
Type the following command and press Enter to install Flask using pip:
This command will download and install Flask and its dependencies. Wait for the process to complete. Once it’s finished, you’ll have Flask installed on your system.
To ensure Flask is installed correctly, you can check the installed version. In the terminal or command prompt, type:
This command should display the Flask version if the installation was successful.
Now, let’s create a simple Flask application to verify that everything is working. Create a new Python file (e.g., app.py) and open it in a text editor or integrated development environment (IDE).
Add the following code to app.py:
Save the file.
In the terminal or command prompt, navigate to the directory where app.py is located. Type the following command to run the Flask application:
You should see output indicating that the Flask development server is running. Open your web browser and go to http://127.0.0.1:5000/. You should see the message “Hello, Flask!” displayed on the page.
Congratulations! You’ve successfully installed Flask and created a simple Flask application. You can now build upon this foundation to create more complex web applications and APIs using Flask.
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