[Python] Tuples?

-

Tuples are used to store multiple items in a single variable. Tuple is one of 4 built-in data types in Python used to store collections of data, the other 3 are List, Set, and Dictionary, all with different qualities and usage. A tuple is a collection which is ordered and unchangeable.


whenever create tuples, we're using open and close parenthesis()

coordinates = (2, 5)

print(coordinates[1])

You're going to get "5" 



What's the difference between List and Tuple ?


List                     vs                  Tuple

  [ ]                                                 ( )   

Changeable                        Unchangeable 


Python Collections (Arrays)

There are four collection data types in the Python programming language:

  • List is a collection which is ordered and changeable. Allows duplicate members.
  • Tuple is a collection which is ordered and unchangeable. Allows duplicate members.
  • Set is a collection which is unordered, unchangeable*, and unindexed. No duplicate members.
  • Dictionary is a collection which is ordered** and changeable. No duplicate members.


you can also combine Tuple and List 
coordinates = [(2, 5), (7,8), (3,4)]

print(coordinates[1])


you're getting;
(7, 8)

Popular posts from this blog

[Python] Dictionary

-
This Chapter, we're going to make basic dictionary.  mondict = {     "1" : "Janunary" ,     "2" : "February" ,     "3" : "March" ,     "4" : "April" } whenever you make dictionary in python, you're going to use open and close curly brackets "{ }" Let's run  print ( mondict [ "2" ]) you get "February"  you can also use "get" function print ( mondict . get ( "2" )) you can specify default value that I wanna use if the key is not found by using get function. so when you run this print ( mondict . get ( "6" )) 6 is not on the list, you're going to get "none"  you can also pass the default value to print out  print ( mondict . get ( "6" , "invalid value" )) and you're going to get "invalid value"
Read more

[Visual Design 2/3]

-
Image
1. Push Elements Left or Right with the float Property The next positioning tool does not actually use position, but sets the float property of an element. Floating elements are removed from the normal flow of a document and pushed to either the left or right of their containing parent element. It's commonly used with the width property to specify how much horizontal space the floated element requires. The given markup would work well as a two-column layout, with the section and aside elements next to each other.  Let me   Give the #left item a float of left and the #right item a float of right. 2. Change the Position of Overlapping Elements with the z-index Property When elements are positioned to overlap (i.e. using position: absolute | relative | fixed | sticky), the element coming later in the HTML markup will, by default, appear on the top of the other elements. However, the z-index property can specify the order of how elements are stacked on top of one another. It ...
Read more

[JavaScript] For loop , Function

-
Image
let fruit = prompt ( "which one you need ?" ) switch ( fruit ){   case "apple" :     console . log ( "1,000" );     break ;   case "Banana" :     console . log ( "500" );         break ;   case "Melon" :     console . log ( "2,000" );         break ;   default :     console . log ( "Sorry, We don't sell that one" ); } prompt 는  그 값의 아래는 전부 불러옴. 예를들어 Banana를 입력했을 깨 500과 그 아래 값들도 모두 불러옴. 때문에 break 를 써줘야함 default는 해당하지 않는 값을 입력했을 때 ..  Function function showError (){   alert ( "Error, Try again" ) } showError (); function sayHello ( name ){   const msg = `Hello, ${ name } ` ;   console . log ( msg ); } sayHello ( 'Mike' ); sayHello ( "Jane" ); "Hello, Mike" "Hello, Jane" function sayHello ( name ){     let msg = `Hello` ;     if ( name ){         msg += ', ' + name ;     }     console...
Read more