doctexample.py

itemCost = {'item1': 100, 'item2': 10, 'item3': 5}
# Get value using Key
print(itemCost['item1'])

# Put value
itemCost["item4"] = 99

# Length of the dictionary
print(len(itemCost))

# Delete an element using key
del itemCost["item1"]

# List of keys
print(itemCost.keys())

# List of values
print(itemCost.values())