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()方法用于删除给定元素的第一次出现，该方法用此列表(必须从中删除元素的列表)调用，并接受要删除的元素作为参数。

Syntax:

句法：

list_name.remove(element)

Parameter(s):

参数：

• element – It represents the element to be removed.

  element –它表示要删除的元素。

Return value:

返回值：

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

此方法的返回类型为<class'NoneType'> ，它什么也不返回。

Example 1:

范例1：

# Python List remove() Method with Example# declaring the listcars = ["BMW", "Porsche", "Audi", "Lexus", "Audi"]# printing the listprint("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

输出量

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，则方法返回“ ValueError”。

Example 2:

范例2：

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

Output

输出量

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 
    
         x.remove(100) # will generate errorValueError: list.remove(x): x not in list
    

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python 示例