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In programming, data type is an important concept
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 |
None Type: | NoneType |
You can get the data type of any object by using the type()
function:
Print the data type of the variable x:
x = 5
print(type(x))
In Python, the data type is set when you assign a value to a variable:
#dtref td:nth-child(1) { font-family: Consolas,"courier new"; font-size: 110%; }
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 » |
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 » |
The following code example would print the data type of x, what data type would that be?
x = 5 print(type(x))