python datatypes

Built-in Data Types

In programming, 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

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 »

Example

Print the data type of the variable x:

Setting the Data Type

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

Example

Data Type

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x = "Hello World"

str

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x = 20

int

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x = 20.5

float

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x = 1j

complex

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x = ["apple", "banana", "cherry"]

list

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x = ("apple", "banana", "cherry")

tuple

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x = range(6)

range

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x = {"name" : "John", "age" : 36}

dict

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x = {"apple", "banana", "cherry"}

set

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x = frozenset({"apple", "banana", "cherry"})

frozenset

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x = True

bool

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x = b"Hello"

bytes

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x = bytearray(5)

bytearray

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x = memoryview(bytes(5))

memoryview

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Setting the Specific Data Type

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

constructor functions:

Example

Data Type

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x = str("Hello World")

str

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x = int(20)

int

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x = float(20.5)

float

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x = complex(1j)

complex

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x = list(("apple", "banana", "cherry"))

list

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x = tuple(("apple", "banana", "cherry"))

tuple

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x = range(6)

range

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x = dict(name="John", age=36)

dict

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x = set(("apple", "banana", "cherry"))

set

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x = frozenset(("apple", "banana", "cherry"))

frozenset

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x = bool(5)

bool

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x = bytes(5)

bytes

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x = bytearray(5)

bytearray

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x = memoryview(bytes(5))

memoryview

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Test Yourself With Exercises

Exercise:

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

Start the Exercise