How do I copy dicts in Python with type hints?

In Python, you can copy dictionaries using several methods, and it's helpful to use type hints to clarify the types involved. Here’s how you can do this:


# Method 1: Using the copy() method
from typing import Dict

def copy_dict(original: Dict[str, int]) -> Dict[str, int]:
    return original.copy()

# Method 2: Using the dict() constructor
def copy_dict_via_constructor(original: Dict[str, int]) -> Dict[str, int]:
    return dict(original)

# Method 3: Using dictionary comprehension
def copy_dict_comprehension(original: Dict[str, int]) -> Dict[str, int]:
    return {k: v for k, v in original.items()}