Dictionaries

# Dictionaries are used to store data in key value pairs and cannot have duplicate keys 

# Define a dictionary 
dict1 = {"a":1, "b":2, "c":3}

# Multiple values to a key 
employees = {"Finance": ["Bob", "Linda", "Tina"], "IT": ["Gene", "Louise", "Tedy"]}

# Add a key value pair
employees["Legal"] = ["Mr.Frond"] 
emplyees.update({"Sales": ["Andie", "Ollie"]})

# Access values in a dictionary 
print(dict1["a"])
print(dict1.get("a"))

# Get all keys in dict 
print(dict1.keys())

# Get all values 
print(dict1.values())

# Print all items 
print(dict1.items())

# Change a key value 
dict["a"] = 0
dict1.update({"a": 1})

# Remove items from dict 
dict1.pop("d")

# Nested dict
dict['c'] = {"a":1, "b":2}