What is a dictionary in Python?

A dictionary stores data as key: value pairs inside curly braces { }. You use the key to get the value. Keys must be unique, and from Python 3.7 a dictionary also remembers the order in which items were added.

student = {"name": "Robin", "age": 20}

print(student["name"])
student["city"] = "Delhi"
print(student)
print(student.get("phone", "not found"))

Output:

Using get() is safer than square brackets, because it does not raise a KeyError when the key is missing. See the Python Dictionary chapter for more methods.

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