What are the functions of the pop method in Python?

1 year ago
Noah Thompson
1 minute

In Python, the pop() method is typically used to remove a specific key from a dictionary and return the corresponding value. This method specifically function to:

  1. Delete the specified key and return the corresponding value.
  2. my_dict = {‘a’: 1, ‘b’: 2, ‘c’: 3}
    value = my_dict.pop(‘b’)
    print(value) # output: 2
    print(my_dict) # output: {‘a’: 1, ‘c’: 3}
  3. Provide default value parameters to prevent KeyError.
  4. my_dict = {‘a’: 1, ‘b’: 2, ‘c’: 3}
    value = my_dict.pop(‘d’, ‘Key not found’)
    print(value) # Output: ‘Key not found’
  5. If a default value parameter is not provided and the specified key does not exist, a KeyError exception will be raised.
  6. The code attempts to remove a key from the dictionary that does not exist, resulting in a KeyError.

In conclusion, the pop() function is mainly used to delete a specified key from a dictionary and return the corresponding value, while also providing a default value to prevent a KeyError exception.

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