Skip to main content

Python Data Types

 

Python Data Types


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))

Setting the Data Type

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

ExampleData Type
x = "Hello World"str
x = 20int
x = 20.5float
x = 1jcomplex
x = ["apple", "banana", "cherry"]list
x = ("apple", "banana", "cherry")tuple
x = range(6)range
x = {"name" : "John", "age" : 36}dict
x = {"apple", "banana", "cherry"}set
x = frozenset({"apple", "banana", "cherry"})frozenset
x = Truebool
x = b"Hello"bytes
x = bytearray(5)bytearray
x = memoryview(bytes(5))memoryview

Setting the Specific Data Type

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

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

Comments

Post a Comment

Popular posts from this blog

Python Lists

  Python  Lists mylist = [ "apple" ,  "banana" ,  "cherry" ] List Lists are used to store multiple items in a single variable. Lists are one of 4 built-in data types in Python used to store collections of data, the other 3 are  Tuple ,  Set , and  Dictionary , all with different qualities and usage. Lists are created using square brackets: Example Create a List: thislist = [ "apple" ,  "banana" ,  "cherry" ] print (thislist) List Items List items are ordered, changeable, and allow duplicate values. List items are indexed, the first item has index  [0] , the second item has index  [1]  etc. Ordered When we say that lists are ordered, it means that the items have a defined order, and that order will not change. If you add new items to a list, the new items will be placed at the end of the list. Changeable The list is changeable, meaning that we can change, add, and remove items in a list after it has been created. Allow Duplicat...
Post a Comment
Read more

Python Variables

  Python  Variables Variables Variables are containers for storing data values. Creating Variables Python has no command for declaring a variable. A variable is created the moment you first assign a value to it. Example x =  5 y =  "John" print (x) print (y) Variables do not need to be declared with any particular  type , and can even change type after they have been set. Example x =  4         # x is of type int x =  "Sally"   # x is now of type str print (x) Casting If you want to specify the data type of a variable, this can be done with casting. Example x =  str ( 3 )     # x will be '3' y =  int ( 3 )     # y will be 3 z =  float ( 3 )   # z will be 3.0 Get the Type You can get the data type of a variable with the  type()  function. Example x =  5 y =  "John" print ( type (x)) print ( type (y)) Single or Double Quotes? Strin...
Post a Comment
Read more

Python Getting Started

  Python  Getting Started Python Install Many PCs and Macs will have python already installed. To check if you have python installed on a Windows PC, search in the start bar for Python or run the following on the Command Line (cmd.exe): C:\Users\ Your Name >python --version To check if you have python installed on a Linux or Mac, then on linux open the command line or on Mac open the Terminal and type: python --version If you find that you do not have python installed on your computer, then you can download it for free from the following website:  https://www.python.org/ Python Quickstart Python is an interpreted programming language, this means that as a developer you write Python (.py) files in a text editor and then put those files into the python interpreter to be executed. The way to run a python file is like this on the command line: C:\Users\ Your Name >python helloworld.py Where "helloworld.py" is the name of your python file. Let's write our first Python fi...
Post a Comment
Read more