Python dictionary is a built-in type that supports key-value pairs. It's the nearest builtin data structure relative to Java's HashMap.

You can declare a dict with key-value pairs set to values:

streetno = {
    "1": "Sachin Tendulkar",
    "2": "Dravid",
    "3": "Sehwag",
    "4": "Laxman",
    "5": "Kohli"
}

You can also set a key-value mapping after creation:

streetno = {}
streetno["1"] = "Sachin Tendulkar"
print(streetno["1"]) # => "Sachin Tendulkar"

Another way to create a dictionary is with the dict() builtin function, but this only works when your keys are valid identifiers:

streetno = dict(one="Sachin Tendulkar", two="Dravid")
print(streetno["one"]) # => "Sachin Tendulkar"