list = [2,5,6,4,7,1]

dict = {
    "name" : "Duy",
    "age" : 21,
    "location" : "Ho Chi Minh",
}
# dict["name"] = "Dy"
# print(dict)

dict["work"] = "MindX"

#Delete a key-value pair

# del dict["name"]
# dict.pop("name")

# print(dict)

# Get the items size
# print(len(dict))

# Clear the whole dictionary
# dict.clear()
print(dict)

# Check if key exists

if "age" in dict:
    # print() 
    print("A")

# Copy a dictionary

dict1 = dict.copy()
dict2 = dict

print(id(dict))
print(id(dict1))
print(id(dict2))

# del dict1["age"]

# print(dict)
# print(dict1)

# print(dict1)

for key in dict:
    print(dict[key])

# for value in dict.values():
#     print(value)

# for key,value in dict.items():
#     print(key,value)

# Dữ liệu lồng vào nhau
# - List in Dict ---
# - Dict in List ---
# - List in List ---
# - Dict in Dict ---

students = [
    {
        "name": "Duy",
        "age": 21,
        "sothich" : ["Work","Sleep"]
    },
    {
        "name": "A",
        "age": 21
    },
     {
        "name": "B",
        "age": 21
    },
     {
        "name": "C",
        "age": 21
    },
]

# studentss = [
#     ["nam","duy","son"],
#     []
# ]

print(students)

z = "A,B,C"
y = z.split(",")
x = ",".join(y)
print(y,x)