Explore the fundamentals and advanced applications of GraphQL in Python through this comprehensive EuroPython 2018 conference talk. Delve into the basics of the query language, learn how to implement it using Flask and SQLAlchemy, and discover how Python's type-hinting can generate GraphQL schemas. Gain insights into the powerful tooling surrounding GraphQL, enabling efficient data retrieval, easy API documentation, and exploration. Understand the concept of 'API First' development and how GraphQL tools can enhance your development process. Suitable for both novices and experts, this talk covers topics such as GraphQL queries, mutations, typing, and resolvers, while also exploring the benefits of GraphQL in terms of efficiency, documentation, and maintainability. A general understanding of APIs, Python frameworks, and ORMs is beneficial but not required to grasp the concepts presented in this informative session.