A Python full-stack developer possesses expertise in both front-end and back-end technologies, utilizing knowledge of languages such as HTML, CSS, JavaScript, and Python, along with various frameworks and libraries to create efficient web applications. Training courses typically last six months and are available online and offline, costing around 70,000 rupees. The high demand for Python full-stack developers is reflected in salary ranges from 4 to 13 LPA, depending on experience and company.