Python 中集合和列表的区别

在本文中，我们将讨论 Python 中集合和列表的区别。集合和列表是 Python 中的数据结构，用于以有效的方式存储和组织数据。


# let's see the Python code for demonstrating the List Data Structure. 

# First, we will create the List
List = []
print("JavaTpoint data List: ")
print(List)

# we are creating the List of numbers
List = [12, 24, 64, 18, 3, 201, 65, 35, 27, 29, 58, 42, 87, 30, 28, 79, 4, 90]
print("n The JavaTpoint List of numbers: ")
print(List)

# Now, we will create the List of strings and will access it using index method.

List = ["let's", "learn", "Python", "from", "JavaTpoint"]
print("nList Items: ")
print(List[0]) 
print(List[2])
print(List[1])
print(List[4])
print(List[3])
# Now we will check is list are ordered

List1 = [9, 3, 6, 19, 67, "Hey", "JavaTpoint", 78, 2, 1]
List2 = [9, 3, 6, 19, 67, 78, "Hey", "JavaTpoint", 2, 1]
print("List1 = ", List1)
print("List2 = ", List2)
List1 == List2

输出:

JavaTpoint data List: 
[]

 The JavaTpoint List of numbers: 
[12, 24, 64, 18, 3, 201, 65, 35, 27, 29, 58, 42, 87, 30, 28, 79, 4, 90]

List Items: 
let's
Python
learn
JavaTpoint
from

List1 =  [9, 3, 6, 19, 67, 'Hey', 'JavaTpoint', 78, 2, 1]
List2 =  [9, 3, 6, 19, 67, 78, 'Hey', 'JavaTpoint', 2, 1]
False

一组

集合是 Python 中数据类型的无序集合，具有可变性和可迭代性。集合没有任何相同元素的重复。与列表相比，在 Python 中使用集合数据存储工具的一个主要优势是，它提供了高度优化的方法来检查集合中特定项目的存在。

以下是 set 的重要特性:

它是 Python 中项目或数据类型的无序集合。
存储在其中的元素的顺序不是固定的。集合元素的顺序可以改变。
花括号{ }之间定义了一组元素。
虽然只有不可变的元素存储在集合中，但它是可变的。

示例:


# let's see the Python code for demonstrating the Set Data Structure. 

# First, we will create the Set
setA = set()
print("Intial JavaTpoint Set: ")
print(setA)

# we are creating the Set by using Constructor
# we will use object for Storing String)
String = 'lets learn Python from JavaTpoint'
setA = set(String)
print("n Storing the set by using the Object: " )
print(setA)

# now, we will create the Set by using the list
setA = set(["let's", "learn", "Python", "from", "JavaTpoint"])
print("n Storing the set by using the List: ")
print(setA)

输出:

Intial JavaTpoint Set: 
set()

 Storing the set by using the Object: 
{'t', 'v', 'a', 'r', 'T', 'l', 'n', 'y', 'e', ' ', 'h', 'P', 'p', 'f', 'o', 's', 'i', 'J', 'm'}

 Storing the set by using the List: 
{'JavaTpoint', "let's", 'learn', 'from', 'Python'}

列表与集合

Python 中集合和列表的区别

目录

一组

列表与集合