What are the advantages and disadvantages of using MyPy for static typing in Python?

Advantages of MyPy:

• Allows detecting type errors during development, before running the code.
• Improves code readability and maintainability through explicit type annotations.
• Assists autocomplete and refactoring tools in IDEs.
• Does not affect program execution, as types are checked statically.

Disadvantages of MyPy:

• Requires additional time for writing and maintaining type annotations.
• Cannot always verify dynamic Python constructs, reducing the completeness of checks.
• Migration to typing in large projects can be labor-intensive.
• Sometimes false warnings occur or workarounds are needed.

Example of using MyPy:

from typing import List

def greet_all(names: List[str]) -> None:
    for name in names:
        print(f"Hello, {name}!")

# Passing an incorrect type will cause MyPy to report an error
# greet_all(123)  # Type error

Thus, MyPy helps improve code quality but requires discipline and time for implementation.