python 示例

列出remove()方法 (List remove() Method)

remove() method is used to remove the first occurrence of the given element, the method is called with this list (the list from which we have to remove the element) and accepts the element to be removed as an argument.

remove()方法用于刪除給定元素的第一次出現(xiàn)，該方法用此列表(必須從中刪除元素的列表)調(diào)用，并接受要刪除的元素作為參數(shù)。

Syntax:

句法：

list_name.remove(element)

Parameter(s):

參數(shù)：

• element – It represents the element to be removed.

  element –它表示要刪除的元素。

Return value:

返回值：

The return type of this method is <class 'NoneType'>, it returns nothing.

此方法的返回類型為<class'NoneType'> ，它什么也不返回。

Example 1:

范例1：

# Python List remove() Method with Example# declaring the list cars = ["BMW", "Porsche", "Audi", "Lexus", "Audi"]# printing the list print("cars before remove operations...") print("cars: ", cars)# removing "BMW" cars.remove("BMW") # removing "Audi" cars.remove("Audi")# printing the list print("cars after remove operations...") print("cars: ", cars)

Output

輸出量

cars before remove operations... cars: ['BMW', 'Porsche', 'Audi', 'Lexus', 'Audi'] cars after remove operations... cars: ['Porsche', 'Lexus', 'Audi']

Note: If any element doesn't exist in the list, method returns "ValueError".

注意：如果列表中不存在任何元素，則方法返回“ ValueError”。

Example 2:

范例2：

# Python List remove() Method with Example# declaring the list x = [10, 20, 30, 40, 50, 60, 70]# printing the list print("x before remove operations...") print("x: ", x)x.remove(10) # will remove 10 x.remove(70) # will remove 70# printing the list print("x after remove operations...") print("x: ", x)# removing an element that doesn't exist # in the list... x.remove(100) # will generate error

Output

輸出量

x before remove operations... x: [10, 20, 30, 40, 50, 60, 70] x after remove operations... x: [20, 30, 40, 50, 60] Traceback (most recent call last):File "main.py", line 19, in <module>x.remove(100) # will generate error ValueError: list.remove(x): x not in list

翻譯自: https://www.includehelp.com/python/list-remove-method-with-example.aspx

python 示例

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