How do I copy dicts in Python with standard library only?

In Python, dictionaries can be copied using the standard library in several ways. Here are the most common methods:

  • Using the built-in copy() method: Each dictionary has a method called copy() that creates a shallow copy of the dictionary.
  • Using dictionary comprehension: You can create a new dictionary by iterating over the existing dictionary items.
  • Using the built-in dict() function: The dict() constructor can also be used to create a copy of the dictionary.

Here’s an example of how to copy a dictionary:

# Original dictionary original_dict = {'a': 1, 'b': 2, 'c': 3} # Method 1: Using the copy() method copied_dict_1 = original_dict.copy() # Method 2: Using dictionary comprehension copied_dict_2 = {key: value for key, value in original_dict.items()} # Method 3: Using dict() function copied_dict_3 = dict(original_dict) print(copied_dict_1) print(copied_dict_2) print(copied_dict_3)

Python Dictionary Copy Standard Library

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