Working with Python Dictionaries

Accessing Dictionary Items

Accessing elements in a dictionary, either by their keys or by using methods like get().

Accessing by keys

MyDict.py

# Accessing dictionary items
myDict = {'name': 'John', 'age': 30, 'city': 'New York'}

# Accessing by keys
print(myDict['name']) 

Output

John

Using get() method

MyDict.py

# Accessing dictionary items
myDict = {'name': 'John', 'age': 30, 'city': 'New York'}

# Using get() method
print(myDict.get('age'))  

Output

30

Modifying Dictionary

We can Modify a Dictionary by modifying elements in a dictionary, either by adding new key-value pairs, updating existing ones, or removing items.

Adding

MyDict1.py

# Modifying dictionary
myDict = {'name': 'John', 'age': 30, 'city': 'New York'}

# Adding new key-value pair
myDict['occupation'] = 'Engineer'

print(myDict)

Output

{'name': 'John', 'age': 30, 'city': 'New York', 'occupation': 'Engineer'}

Updating

MyDict2.py

# Modifying dictionary
myDict = {'name': 'John', 'age': 30, 'city': 'New York'}

# Updating existing value
myDict['age'] = 31

print(myDict)

Output

{'name': 'John', 'age': 31, 'city': 'New York'}

Deleting

MyDict.py

# Modifying dictionary
myDict = {'name': 'John', 'age': 30, 'city': 'New York'}

# Removing key-value pair
del myDict['city']

print(myDict)

Output

{'name': 'John', 'age': 30}