Installing Flask - Try It Yourself

Installing Flask

📖 Scenario: You want to start building a web app using Flask, a popular Python web framework. Before writing any code, you need to install Flask properly in your project environment.

🎯 Goal: Learn how to set up a Python virtual environment and install Flask using the command line.

📋 What You'll Learn

Create a Python virtual environment named venv

Activate the venv environment

Install Flask version 2.3.2 inside the virtual environment

Verify Flask installation by checking the installed packages

💡 Why This Matters

🌍 Real World

Setting up Flask correctly is the first step to building web applications in Python. Using virtual environments keeps projects organized and avoids conflicts between package versions.

💼 Career

Many software development jobs require knowledge of environment management and package installation to maintain clean, reproducible projects.

1

Create a Python virtual environment

Open your command line terminal and create a Python virtual environment named venv by running the command python -m venv venv.

Flask

# Run the command to create a virtual environment named venv
# Your code here

Need a hint?

Use the python -m venv command followed by the environment name venv.

2

Activate the virtual environment

Activate the venv virtual environment using the appropriate command for your operating system: source venv/bin/activate for macOS/Linux or venv\Scripts\activate for Windows.

Flask

python -m venv venv
# Activate the virtual environment below
# Your code here

Need a hint?

On Windows, use venv\Scripts\activate. On macOS/Linux, use source venv/bin/activate.

3

Install Flask version 2.3.2

With the virtual environment activated, install Flask version 2.3.2 by running the command pip install Flask==2.3.2.

Flask

python -m venv venv
source venv/bin/activate
# Install Flask version 2.3.2 below
# Your code here

Need a hint?

Use pip install Flask==2.3.2 to install the exact Flask version.

4

Verify Flask installation

Check that Flask version 2.3.2 is installed by running pip show Flask and verifying the version number in the output.

Flask

python -m venv venv
source venv/bin/activate
pip install Flask==2.3.2
# Verify Flask installation below
# Your code here

Need a hint?

Use pip show Flask to see the installed Flask version and details.