Python Data Types
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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 »
print[type[x]]
Setting the Data Type
In Python, the data type is set when you assign a value to a variable:
| 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 » |
Setting the Specific Data Type
If you want to specify the data type, you can use the following constructor functions:
| 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]]
Submit Answer »
Start the Exercise
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