You can clear all elements from a dictionary using the clear() method. Here are five examples demonstrating how to do this:

1. Clearing elements from a dictionary:

my_dict = {'a': 1, 'b': 2, 'c': 3}
my_dict.clear()
print(my_dict)  # Output: {}

2. Clearing elements from an empty dictionary (no effect):

empty_dict = {}
empty_dict.clear()
print(empty_dict)  # Output: {}

3. Clearing elements from a dictionary with mixed data types:

mixed_dict = {'name': 'John', 'age': 25, 'grades': [80, 85, 90]}
mixed_dict.clear()
print(mixed_dict)  # Output: {}

4. Clearing elements from a dictionary containing nested dictionaries:

nested_dict = {'a': {'x': 1, 'y': 2}, 'b': {'x': 3, 'y': 4}}
nested_dict.clear()
print(nested_dict)  # Output: {}

5. Clearing elements from a dictionary with default values:

from collections import defaultdict

default_dict = defaultdict(int, {'a': 1, 'b': 2, 'c': 3})
default_dict.clear()
print(default_dict)  # Output: {}

In each of these examples, the clear() method is called on the dictionary object, removing all key-value pairs from the dictionary.