Python 3.7 is a popular programming language released in June 2018. It introduced several new features, including data classes, which simplify the creation of classes for storing data, and the built-in function `breakpoint()`, which aids in debugging. These enhancements make coding more efficient and user-friendly. Another significant improvement in Python 3.7 is the performance boost, particularly in the handling of asynchronous programming. The language also includes better support for type hints, allowing developers to specify data types more clearly. Overall, Python 3.7 continues to be a versatile choice for developers across various fields.