Python type annotations

#function expects a string and returns a string
def greeting(name: str) -> str:
    return 'Hello ' + name

Source: docs.python.org

Python type annotations

# This example illustrates both parameter and return type annotation
# Collection annotations are also supported
from typing import List

def greeting(names: List[str]) -> str:
    return 'Hello, ' + names[0] ' and ' + names[1]

Source: docs.python.org

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