The roles and responsibilities of Python developers include preparing the server-side logic of a web application, developing the application's back-end components and linking it with other web services. They also design and maintain Python scripts and codes to automate tasks. A Python Web Developer is responsible for writing server-side web application logic. Python web developers usually develop back-end components, connect the application with the other (often third-party) web services, and support the front-end developers by integrating their work with the Python application.