Mypy-lang.org Website Review

COMPILE-TIME TYPE CHECKING Static typing makes it easier to find bugs with less debugging. EASIER MAINTENANCE Type declarations act as machine-checked docu*entation. Static typing makes your code easier to understand and easier to modify without introducing bugs. GROW YOUR PROGRAMS FROM DYNAMIC TO STATIC typing You can develop programs with dynamic typing and add static typing after your code has ma*ured, or Mypy is an experimental optional static type checker for Python that aims to combine the benefits of dynamic (or duck) typing and static typing. Mypy combines the expressive power and convenience of Python with a powerful type system and compile-time type checking. Mypy type checks standard Python programs; run them using any Python VM with basically no runtime overhead. Mypy is still in development. Most MYPY 0.650 RELEASED 7 DECEMBER 2018: Mypy 0.650 was released. Read the blog post Mypy 0.641 was released. It adds support for final qualifiers, and namespace packages. It also has many bug fixes and docu*entation more details. (Note that 0.640 was withdrawn due to a regression.) -Guido van Rossum MYPY 0.630 RELEASED 17 SEPTEMBER 2018: Mypy 0.630 was released. It adds support for callback protocols and many smaller improvements, bug fixes, and docu*entation updates. Read the blog post 0.620 was released. It adds support for dataclas*es, improvements to overloads, better support for PEP 561 and several smaller Migrate existing code to static typing, a function at a time. You can freely mix static and dynamic typing within a program, within a module or within an expression. No need to give up dynamic typing — use static typing when it makes sense. Often just adding function signatures gives you statically typed code. Mypy can infer the types of other variables. is easy if you know Python. The aim is to support almost all Python language constructs in mypy. Mypy has a powerful, modern type system with features such as bidirectional type inference, generics, callable types, abstract base