python 示例

設置add()方法 (Set add() Method)

add() method is used to add an element to the set, the method accepts an element and adds the elements to this set.

add()方法用于將元素添加到集合中，該方法接受元素并將元素添加到該集合中。

Note: If the specified element already exists in the set, the method will not add the element to the set.

注意 ：如果指定的元素已經存在于集合中，則該方法不會將元素添加到集合中。

Syntax:

句法：

set_name.add(element)

Parameter(s):

參數：

• element – It represents the element to add in the set.

  element –它表示要添加到集合中的元素。

Return value:

返回值：

It does not return any value.

它不返回任何值。

Example 1:

范例1：

# declaring a set cities = {"New Delhi", "Mumbai"}# printing set before adding the element print("cities = ", cities)# adding new city i.e. new element cities.add("Banglore") cities.add("Gwalior")# printing set after adding the elements print("cities = ", cities)

Output

輸出量

cities = {'New Delhi', 'Mumbai'} cities = {'New Delhi', 'Mumbai', 'Banglore', 'Gwalior'}

Demonstrating example (adding an element that exists in the set)

演示示例(添加集合中存在的元素)

Example 2:

范例2：

# declaring a set cities = {"New Delhi", "Mumbai"}# printing set before adding the element print("cities = ", cities)# adding new city i.e. new element cities.add("Banglore") cities.add("Gwalior")# printing set after adding the elements print("cities = ", cities)# adding "Gwalior" element again cities.add("Gwalior")# printing set after adding the elements print("cities = ", cities)

Output

輸出量

cities = {'Mumbai', 'New Delhi'} cities = {'Gwalior', 'Mumbai', 'New Delhi', 'Banglore'} cities = {'Gwalior', 'Mumbai', 'New Delhi', 'Banglore'}

See the output, we have added element "Gwalior" and tried to add it again, but the second time element "Gwalior" is not added.

看到輸出，我們添加了元素“ Gwalior”，并嘗試再次添加它，但是沒有添加第二次元素“ Gwalior” 。

翻譯自: https://www.includehelp.com/python/set-add-method-with-example.aspx

python 示例

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