第一种：使用 remove()remove() 方法会删除列表中第一个匹配的元素。如果元素不存在，它会抛出一个 V...
# Python List – Append or Add Item cars = ['Ford','Volvo','BMW','Tesla'] cars.append('Audi') print(cars) 执行和输出: 5. 移除元素 移除Python 列表中的某项可以使用列表对象的 remove() 函数,使用该方法语法如下: mylist.remove(thisitem) ...
fpeople.remove('taylor swift') print(fpeople) del fpeople[2] print(fpeople) bowie=fpeople.pop(0) print(bowie,fpeople) last=fpeople.pop() print('there are no more famous people in the list') print(fpeople) # put your code here #Pop the last item from the list fpeople = ['davi...
fpeople.remove('taylor swift') print(fpeople) del fpeople[2] print(fpeople) bowie=fpeople.pop(0) print(bowie,fpeople) last=fpeople.pop() print('there are no more famous people in the list') print(fpeople) # put your code here #Pop the last item from the list fpeople = ['davi...
remove()：移除列表中第一个匹配的指定元素 ，如同从背包中丢弃指定道具。inventory.remove('potion') # ['rope', 'longbow', 'scroll']pop()：移除并返回指定索引处的元素 ，或默认移除并返回最后一个元素 ，仿佛取出并展示最后一页日志。last_item = inventory.pop()# 'scroll'inventory.pop(1)# '...
L.pop(index) -> item -- remove and return item at index (default last). Raises IndexError if list is empty or index is out of range. pop是删除指定索引位置的元素,参数是 index。如果不指定索引,默认删除列表最后一个元素。 代码语言:python ...
list.remove(x) Remove the first item from the list whose value isx. It is an error if there is no such item. list.pop([i]) Remove the item at the given position in the list, and return it. If no index is specified,a.pop()removes and returns the last item in the list. (The...
In this Python tutorial, we will seehow to remove the first element from a list in Pythonusing different methods with practical examples. In Python, a list is a mutable (changeable) collection of items. Each item, or element, can be of any data type. They are enclosed within square brack...
last_student = students[-1] # "Charlie"2.1.1.2 列表的增删改操作 列表提供了丰富的内置方法来改变其内容: •增:append()、extend()、insert() •删:remove()、pop()、del关键字、clear() •改:直接赋值或使用list[index] = new_value
item = s.pop() print(s) print(item) s.remove("b") print(s) s.clear() print(s) 1. 2. 3. 4. 5. 6. 7. 8. 9. 这里注意两点,如果remove删除的元素不存在的话,会报错的.另外一个空集合并不是{}而是set() 改 集合的改就是先删除,后添加 ...