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Dictionary Methods

  • This lesson covers commonly used dictionary methods and their practical applications in Python.

  • Dictionary Methods

    A dictionary method is a built-in function used to perform operations on dictionaries.

get() Method

Safely gets the value of a key without error if key doesn't exist. 

student = {"name": "Ravi", "age": 20}

print(student.get("name"))
print(student.get("marks", "Not Found"))

keys() Method

Returns all keys from the dictionary. 

student = {"name": "Ravi", "age": 20}
print(student.keys())

values() Method

Returns all values from the dictionary. 

student = {"name": "Ravi", "age": 20}
print(student.values())

items() Method

Returns key-value pairs. 

student = {"name": "Ravi", "age": 20}
print(student.items())

update() Method

Updates existing data or adds new key-value pairs. 

student = {"name": "Ravi", "age": 20}

student.update({"age": 21, "marks": 85})
print(student)

pop() Method

Removes a specific key. 

student = {"name": "Ravi", "age": 20}

student.pop("age")
print(student)

popitem() Method

Removes the last inserted item. 

student = {"name": "Ravi", "age": 20, "marks": 90}

student.popitem()
print(student)

clear() Method

Removes all items. 

student = {"name": "Ravi", "age": 20}

student.clear()
print(student)

copy() Method

Creates a copy of dictionary. 

student = {"name": "Ravi", "age": 20}

new_student = student.copy()
print(new_student)
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