python subset dictionary code example

Example: python subset dictionary

# Basic syntax:
{key: value for key, value in a_dictionary.items() if condition}

# Example usage:
# Create dictionary:
your_dictionary = {'a': 1, 'b': 2, 'c': 3, 'd': 4}

# Select keys whose value is greater than 2:
{key: value for key, value in a_dictionary.items() if value > 2}
--> {'c': 3, 'd': 4}

keys_to_get = ['a', 'c']
{key: value for key, value in a_dictionary.items() if key in keys_to_get}
--> {'a': 1, 'c': 3}