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Introduction to Lists


แŠ แŠ•แ‹ต แ•แˆฎแŒแˆซแˆ แ‰ แˆแŠ•แŒฝแแ‰ แ‰ต แŒŠแ‹œ แ‰ฅแ‹™ แˆ˜แˆจแŒƒแ‹Žแ‰ฝแŠ• store แŠฅแŠ“แˆจแŒ‹แˆˆแŠ• แŠจแ‹šแ‹ซแˆ แŠฅแАแ‹šแ‹ซ แˆ˜แˆจแŒƒแ‹Žแ‰ฝ manage แˆˆแˆ›แ‹ตแˆจแŒ แ‹จแˆšแ‹ซแˆตแ‰ธแŒแˆฉ แ‹ญแˆ†แŠ“แˆ‰แข แŠฅแАแˆฑแŠ• แ‹ฐแŒแˆž retrieve แˆ›แˆจแŒ แฃ แˆ›แ‹แŒฃแ‰ตแฃ แˆ›แŒแŠ˜แ‰ต แŠฅแŠ“ แˆ˜แŒ แ‰€แˆ แ‰ แŒฃแˆ แŠจแ‰ฃแ‹ต แ‹ญแˆ†แŠ“แˆแข

แˆตแˆˆแ‹šแˆ… แŠฅแАแ‹šแ‹ซแŠ• แˆ˜แˆจแŒƒแ‹Žแ‰ฝ แ‰ แ‰กแ‹ตแŠ•/แ‰ แˆ˜แˆ˜แ‹ฐแ‰ฅ/ แŠจแ‹šแ‹ซแˆ แ‰ แŠ แŠ•แ‹ต variable แ‹แˆตแŒฅ store แˆ›แˆจแŒ แŠ แˆˆแ‰ฅแŠ•แข แ‰ Programming แ‹แˆตแŒฅ, แ‹ญแˆ… แˆ‚แ‹ฐแ‰ต แŠฅแŠ•แ‹ฐ Data structure แ‹ญแ‰ฃแˆ‹แˆแข

Data Structure is a particular way of organizing data in a computer so that it can be used effectively.


แ‹จ List แ‰ฃแˆ…แˆชแ‹ซแ‰ต

1. Lists แ‰ฐแˆ˜แˆณแˆณแ‹ญ แ‹ˆแ‹ญแˆ แ‹จแ‰ฐแˆˆแ‹ซแ‹จ (heterogeneous) data types store แˆ›แ‹ตแˆจแŒ แ‹ญแ‰ฝแˆ‹แˆ‰

2. Lists dynamic แŠ“แ‰ธแ‹ แˆ›แˆˆแ‰ตแˆ we don't need to mention the size of the list while declaring.

3. Order is preserved, แ‹ˆแ‹ญแˆ insert แ‹ซแˆจแŒแАแ‹แŠ• data as long as there are no modifications to the list แ‰ แ‰ฐแˆ˜แˆณแˆณแ‹ญ order แАแ‹ outputแŠกแŠ•แˆ แ‹จแˆแŠ“แŒˆแŠ˜แ‹แข

4. Lists duplicate แ‹จแˆ†แА element แˆ˜แ‹ซแ‹ แ‹ญแ‰ฝแˆ‹แˆ‰

5. In lists แ‹‹แŠ“แ‹แŠ• แˆšแŠ“ แ‹จแˆšแŒซแ‹ˆแ‰ฐแ‹ index แАแ‹แฃ Index แ‰ แˆ˜แŒ แ‰€แˆ แАแ‹ แ‹จlistแŠกแŠ• elements access แ‹จแˆแŠ“แˆจแŒˆแ‹ (แˆตแˆˆ index แ‰ แ‰€แŒฃแ‹ญ แŠฅแŠ“แ‹ซแˆˆแŠ•)

6. List objects mutable แŠ“แ‰ธแ‹ แˆ›แˆˆแ‰ตแˆ listแŠก แŠจแ‰ฐแˆแŒ แˆจ แ‰ แŠ‹แˆ‹ แ‹จlistแŠกแŠ• content modify แˆ›แˆจแŒ แ‹ˆแ‹ญแˆ แˆ˜แ‰€แ‹จแˆญ แŠฅแŠ•แ‰ฝแˆ‹แˆˆแŠ•แข

...to be contd

#Lists

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...contd

How to create a List?


List create แˆˆแˆ›แˆจแŒ แ‰ฅแ‹™ แŠ แ‹ญแАแ‰ต แˆ˜แŠ•แŒˆแ‹ถแ‰ฝ แŠ แˆ‰แฃ แŠฅแˆตแŠช แ‰ แˆแˆณแˆŒ แŠฅแŠ•แˆ˜แˆแŠจแ‰ณแ‰ธแ‹:

1. Using square brackets

แ‰ python list square brackets แ‰ แˆ˜แŒ แ‰€แˆ แˆ˜แแŒ แˆญ แŠฅแŠ•แ‰ฝแˆ‹แˆˆแŠ•แฃ แ‹จlistแŠกแŠ• elements แ‹ฐแŒแˆž แ‰ comma แŠฅแŠ•แˆˆแ‹ซแ‹ซแ‰ธแ‹‹แˆˆแŠ•แข
Syntax
:
list_name = [elements]

แˆˆแˆแˆณแˆŒ:
my_list = [1, 2, 3, 4, 5]


2. Using list() function

แˆแˆˆแ‰ฐแŠ›แ‹ list แˆ˜แแŒ แˆชแ‹ซ แˆ˜แŠ•แŒˆแ‹ต แ‹ฐแŒแˆž list() แ‹จแˆšแ‰ฃแˆ built-in function แ‰ แˆ˜แŒ แ‰€แˆ แАแ‹แข แ‹ญแˆ„แŠ• แ‹ฐแŒแˆž แ‹จแˆแŠ•แŒ แ‰€แˆ˜แ‹ แŠจแ‰ฐแˆˆแ‹ซแ‹ฉ data types like : strings, set, tuple ...etc list แˆ˜แแŒ แˆญ แˆตแŠ•แˆแˆแŒ แАแ‹แข

Set, tuple, Dictionary -> แ‰ แ‰€แŒฃแ‹ญ แŠฅแŠ•แˆ›แˆซแ‰ธแ‹‹แˆˆแŠ•

แˆˆแˆแˆณแˆŒ:

name = "ABEBE"

my_list = list(name)

print(my_list) # Output : ['A', 'B', 'E', 'B', 'E']


3. Using list() and range() function

แ‹จrange() function sequence of numbers create แ‹ซแˆจแŒ‹แˆแฃ starting from 0 by default, and increments by 1 (by default), แŠฅแŠ“ specified แŠจแˆ†แАแ‹ แ‰แŒฅแˆญ แ‰ แŠแ‰ต แ‹ญแ‰†แˆ›แˆแข

...to be contd

#Lists

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โ€‹โ€‹Good evening world! ๐ŸŒŽ
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Test your knowledge about basics of lists in python with these๐Ÿ‘‡ questions
2. How do you create an empty list in Python?
Anonymous Quiz
22%
A) my_list = ()
10%
B) my_list = {}
68%
C) my_list = []
0%
D) my_list = None
Python Pioneers: A Beginner's Guide ๐Ÿ‡ช๐Ÿ‡น
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Beautiful Wallpapers for Programmers

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