Python Dictionary copy()

Python Dictionary clear()

Last Updated : 25 Feb, 2025

clear() method in Python is used to remove all items (key-value pairs) from a dictionary. After calling this method, the dictionary will become empty and its length will be 0. This method is part of the built-in dictionary operations in Python.

Example:

Python

d = {1: "geeks", 2: "for"}

# using clear() to remove all items
d.clear()
print(d)

Output

{}

Explanation: In this example, after calling clear(), the dictionary d becomes empty.

Note: clear() method is safe to use and won't raise errors, even if the dictionary is already empty. It simply clears all items.

clear() syntax

dict.clear()

Here, dict is the dictionary on which the clear() method is called.

Parameters:

None: clear() method does not take any parameters.

Returns:

This method does not return anything. It modifies the dictionary in place, removing all items from it.

clear() examples

Example 1: clear() on an already empty dictionary.

Python

# creating an empty dictionary
d = {}

# Using clear() on the already empty dictionary
d.clear()

print(d)

Output

{}

Explanation: In this case, the dictionary was already empty, but calling clear() does not change its state.

Example 2: Clearing a dictionary after operations.

Python

# dictionary with some initial values
d = {'apple': 2, 'banana': 3, 'orange': 1}

# performing some operations
d['apple'] = 5

d.clear()

print(d)

Output

{}

Explanation: In this case, the dictionary d is updated before calling clear(). After calling the method, the dictionary becomes empty.

Python Dictionary copy()

pawan_asipu

Improve

Article Tags :

Practice Tags :

Similar Reads

Python Dictionary Methods

Python dictionary methods is collection of Python functions that operates on Dictionary.Python Dictionary is like a map that is used to store data in the form of a key: value pair. Python provides various built-in functions to deal with dictionaries. In this article, we will see a list of all the fu

Python Dictionary clear()

clear() method in Python is used to remove all items (key-value pairs) from a dictionary. After calling this method, the dictionary will become empty and its length will be 0. This method is part of the built-in dictionary operations in Python.Example:Pythond = {1: "geeks", 2: "for"} # using clear()

Python Dictionary copy()

Python Dictionary copy() method returns a shallow copy of the dictionary. let's see the Python Dictionary copy() method with examples: Â Examples Input: original = {1:'geeks', 2:'for'} new = original.copy() // Operation Output: original: {1: 'one', 2: 'two'} new: {1: 'one', 2: 'two'}Syntax of copy()

Python Dictionary fromkeys() Method

Python dictionary fromkeys() function returns the dictionary with key mapped and specific value. It creates a new dictionary from the given sequence with the specific value. Python Dictionary fromkeys() Method Syntax: Syntax : fromkeys(seq, val) Parameters : seq : The sequence to be transformed into

Python Dictionary get() Method

Python Dictionary get() Method returns the value for the given key if present in the dictionary. If not, then it will return None (if get() is used with only one argument).Python Dictionary get() Method Syntax:Syntax : Dict.get(key, Value)Parameters: key: The key name of the item you want to return

Python Dictionary items() method

items() method in Python returns a view object that contains all the key-value pairs in a dictionary as tuples. This view object updates dynamically if the dictionary is modified.Example:Pythond = {'A': 'Python', 'B': 'Java', 'C': 'C++'} # using items() to get all key-value pairs items = d.items() p

Python Dictionary keys() method

keys() method in Python dictionary returns a view object that displays a list of all the keys in the dictionary. This view is dynamic, meaning it reflects any changes made to the dictionary (like adding or removing keys) after calling the method. Example:Pythond = {'A': 'Geeks', 'B': 'For', 'C': 'Ge

Python Dictionary pop() Method

The Python pop() method removes and returns the value of a specified key from a dictionary. If the key isn't found, you can provide a default value to return instead of raising an error. Example:Pythond = {'a': 1, 'b': 2, 'c': 3} v = d.pop('b') print(v) v = d.pop('d', 'Not Found') print(v) Output2 N

Python Dictionary popitem() method

popitem() method in Python is used to remove and return the last key-value pair from the dictionary. It is often used when we want to remove a random element, particularly when the dictionary is not ordered. Example:Pythond = {1: '001', 2: '010', 3: '011'} # Using popitem() to remove and return the

Python Dictionary setdefault() Method

Python Dictionary setdefault() returns the value of a key (if the key is in dictionary). Else, it inserts a key with the default value to the dictionary. Python Dictionary setdefault() Method Syntax: Syntax: dict.setdefault(key, default_value)Parameters: It takes two parameters: key - Key to be sear