Python programs dictionary functions

Python programs dictionary functions

 # Create a dictionary

student = {'name': 'John', 'age': 25, 'grade': 'A'}

# Accessing values

print("Name:", student['name'])

print("Age:", student['age'])

print("Grade:", student['grade'])

# Create a dictionary

student = {'name': 'John', 'age': 25}

# Add new key-value pair

student['grade'] = 'A'

# Update value for existing key

student['age'] = 26

print("Updated Dictionary:", student)

# Create a dictionary

student = {'name': 'John', 'age': 25, 'grade': 'A'}

# Delete a key-value pair

del student['grade']

# Clear all elements from the dictionary

# student.clear()

print("Updated Dictionary:", student)

# Create a dictionary

student = {'name': 'John', 'age': 25, 'grade': 'A'}

# Iterate over keys

print("Keys:")

for key in student.keys():

    print(key)

# Iterate over values

print("\nValues:")

for value in student.values():

    print(value)

# Iterate over key-value pairs

print("\nKey-Value Pairs:")

for key, value in student.items():

    print(key, ":", value)

# Create a dictionary

student = {'name': 'John', 'age': 25}

# Check if a key exists

if 'grade' in student:

    print("Grade:", student['grade'])

else:

    print("Grade key does not exist")

# Using get() method

print("Grade:", student.get('grade', 'Not found'))