In-Built Methods On Dictionary | Python 4 You | Lecture 157

In-built Methods on Dictionary:
1. clear():
The clear() method is used to remove all items from a dictionary, effectively emptying it. It does not take any arguments and returns None. This can be useful when you want to reuse a dictionary for a different purpose or clean it up after processing.

2. copy():
The copy() method is used to create a shallow copy of a dictionary. A shallow copy means that a new dictionary is created, but the elements themselves are not cloned.

3. fromkeys():
The fromkeys() method generates a new dictionary with the specified keys and an optional default value for all keys.

4. get():
The get() method is used to retrieve the value associated with a specific key in a dictionary. If the key is not found, it returns a specified default value, or None if no default is provided. This is a safe way to access dictionary values, as it won't raise a KeyError if the key is not present.

5. items():
The items() method returns a view of all key-value pairs in a dictionary as a list of tuples. This can be used for easy iteration through the dictionary, allowing you to access both keys and values conveniently.

6. keys():
The keys() method returns a view of all keys in a dictionary as a list. This view can be used for iteration or to check if a specific key exists in the dictionary.

7. pop():
The pop() method is used to remove and return the value associated with a specific key in a dictionary.

8. popitem():
The popitem() method removes and returns the last key-value pair in a dictionary as a tuple.

9. setdefault():
The setdefault() method is used to retrieve the value of a key in a dictionary. If the key is not found, it will create a new key with a specified default value.

10. update():
The update() method adds key-value pairs from one dictionary to another. If a key already exists in the target dictionary, the value for that key is updated.

11. values():
The values() method returns a view of all values in a dictionary as a list.

12. clear():
The clear() method is used to remove all items from a dictionary, leaving it empty.

13. copy():
The copy() method creates a shallow copy of a dictionary. This copy is independent of the original dictionary, allowing you to make modifications without affecting the original data.

14. fromkeys():
The fromkeys() method generates a new dictionary with specified keys and a default value for all keys.

15. get():
The get() method is used to retrieve the value associated with a specific key in a dictionary. If the key is not found, it returns a specified default value, or None if no default is provided.

16. items():
The items() method returns a view of all key-value pairs in a dictionary as a list of tuples. This view is iterable, making it easy to access both keys and values.

17. keys():
The keys() method returns a view of all keys in a dictionary as a list. This view is iterable and can be used to check for the existence of specific keys in the dictionary.

18. pop():
The pop() method is used to remove and return the value associated with a specific key in a dictionary. You can also specify a default value to be returned if the key is not found.

19. popitem():
The popitem() method removes and returns the last key-value pair in a dictionary as a tuple. This method is suitable for removing items in an arbitrary order.

20. setdefault():
The setdefault() method is used to retrieve the value of a key in a dictionary. If the key is not found, it will create a new key with a specified default value.

21. update():
The update() method adds key-value pairs from one dictionary to another. If a key already exists in the target dictionary, the value for that key is updated.

22. values():
The values() method returns a view of all values in a dictionary as a list. This view can be used for iteration or to check if a specific value exists in the dictionary.

23. clear():
The clear() method is used to remove all items from a dictionary, leaving it empty.

24. `copy():**
The copy() method creates a shallow copy of a dictionary. A shallow copy means that a new dictionary is created, but the elements themselves are not cloned.

25. fromkeys():
The fromkeys() method generates a new dictionary with the specified keys and an optional default value for all keys.

26. `get():**
The get() method is used to retrieve the value associated with a specific key in a dictionary. If the key is not found, it returns a specified default value, or None if no default is provided.

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