How PyCharm supports Flask in Python?

Last Updated : 05 May, 2025

Flask is a reliable framework for Python web applications and APIs. It is a well-liked option among developers due to its simplicity and adaptability. But to fully realize its potential, effective instruments are needed. PyCharm shows up as a powerful ally with a ton of capabilities designed specifically for Flask development. Let's explore what PyCharm is, why it's great for Flask development, and how it helps with Flask projects step-by-step.

What is Pycharm?

PyCharm, developed by JetBrains, is an intelligent Python IDE designed to enhance the productivity of Python developers. It offers a wide array of features, including code completion, intelligent code analysis, version control integration, and advanced debugging capabilities. PyCharm is available in two editions: PyCharm Community, which is free and open-source, and PyCharm Professional, which includes additional features for professional developers.

Advantages of Using PyCharm for Flask

Intelligent Code Assistance: PyCharm provides smart code completion and suggestions, which significantly speeds up the development process. For Flask, PyCharm understands the Flask-specific syntax, helping developers write cleaner and error-free code.
Integrated Flask Server: PyCharm allows developers to run and debug Flask applications directly from the IDE. With a built-in Flask server configuration, developers can test their applications seamlessly without the need for external tools.
Template Language Support: Flask uses Jinja2 as its default templating engine. PyCharm recognizes and supports Jinja2 template syntax, providing context-aware code completion, error highlighting, and navigation within templates.
Database Tools Integration: Many Flask applications involve interacting with databases. PyCharm's database tools integration allows developers to manage databases, execute SQL queries, and visualize data within the IDE.

Python Pycharm - Flask

Below, we will create simple project and understand How PyCharm supports Flask.

Create a Virtual Environment

First, create the virtual environment using the below commands

python -m venv env
.\env\Scripts\activate.ps1

Let's create a small Flask project that fulfills your requirements. First, make sure you have Flask installed. You can install it using:

pip install Flask

Below are the guide thorugh image fro creating file in PyCharm for Flask .

Click OK and you are ready to code in the PyCharm editor.

File Structure

Setting Necessary File

Hello.py : Below code defines a Flask web application with two routes. The '/' route renders an 'index.html' template, while the '/visit_geeksforgeeks' route redirects to the GeeksforGeeks website. When the script is run, the Flask app starts in debug mode. The `render_template` function renders HTML templates, and the `redirect` function sends a client to a different URL.

Python

from flask import Flask, render_template, redirect

app = Flask(__name__)

@app.route('/')
def home():
    return render_template('index.html')

@app.route('/visit_geeksforgeeks')
def visit_geeksforgeeks():
    return redirect('https://www.geeksforgeeks.org')

if __name__ == '__main__':
    app.run(debug=True)

templates/index.html

The HTML document defines a page with a centered heading "Welcome to GeeksforGeeks" and a button styled with CSS. The button has a green background, white text, and expands to blue on hover. However, the button is positioned far to the right (margin-left: 700px), which might cause layout issues.

HTML

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Welcome to GeeksforGeeks</title>
    <style>
    
        .welcome-text {
            text-align: center;
            font-size: 24px;
        }
    
        .visit-button {
            display: inline-block;
            padding: 10px 20px;
            margin-top: 15px;
            text-decoration: none;
            background-color: green;
            color: #fff;
            margin-left: 700px;
            border-radius: 5px;
            font-size: 18px;
            transition: background-color 0.3s ease;
        }
    
        .visit-button:hover {
            background-color: #0056b3;
        }
    </style>
    
</head>
<body>
    <br><br>
    <div class="welcome-text">Welcome to GeeksforGeeks</div>
    <br>
    <a href="{{ url_for('visit_geeksforgeeks') }}" class="visit-button">Visit</a>
</body>
</html>

Run the server