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Python Data Types


Built-in Data Types

In programming, a data type is an important concept.

Variables can store data of different types, and different types can do different things.

Python has the following data types built-in by default, in these categories:

Text Type: str
Numeric Types: int, float, complex
Sequence Types: list, tuple, range
Mapping Type: dict
Set Types: set, frozenset
Boolean Type: bool
Binary Types: bytes, bytearray, memoryview
None Type: NoneType

Getting the Data Type

You can get the data type of any object by using the type() function:

Example

Print the data type of the variable x:

x = 5
print(type(x))
Try it Yourself »

Setting the Data Type

In Python, the data type is set when you assign a value to a variable:

Example Data Type Try it
x = "Hello World" str Try it »
x = 20 int Try it »
x = 20.5 float Try it »
x = 1j complex Try it »
x = ["apple", "banana", "cherry"] list Try it »
x = ("apple", "banana", "cherry") tuple Try it »
x = range(6) range Try it »
x = {"name" : "John", "age" : 36} dict Try it »
x = {"apple", "banana", "cherry"} set Try it »
x = frozenset({"apple", "banana", "cherry"}) frozenset Try it »
x = True bool Try it »
x = b"Hello" bytes Try it »
x = bytearray(5) bytearray Try it »
x = memoryview(bytes(5)) memoryview Try it »
x = None NoneType Try it »

Setting the Specific Data Type

If you want to specify the data type, you can use the following constructor functions:

Example Data Type Try it
x = str("Hello World") str Try it »
x = int(20) int Try it »
x = float(20.5) float Try it »
x = complex(1j) complex Try it »
x = list(("apple", "banana", "cherry")) list Try it »
x = tuple(("apple", "banana", "cherry")) tuple Try it »
x = range(6) range Try it »
x = dict(name="John", age=36) dict Try it »
x = set(("apple", "banana", "cherry")) set Try it »
x = frozenset(("apple", "banana", "cherry")) frozenset Try it »
x = bool(5) bool Try it »
x = bytes(5) bytes Try it »
x = bytearray(5) bytearray Try it »
x = memoryview(bytes(5)) memoryview Try it »

Test Yourself With Exercises

Exercise:

The following code example would print the data type of x, what data type would that be?

x = 5
print(type(x))