The right way to remove the last element from a list object del record[-1] This method will remove the last item in the list, this is the most efficient way of removing the last item in the Python list. Other less right ways record = record[:-1] This method while getting the job ...
Remove and return item at index (default last). Raises IndexError if list is empty or index is out of range. """ pass 翻译:默认移除对象的最后一个值 如果列表为空或者索引超出范围,则抛出IndexError View Code 9.remove def remove(self, *args, **kwargs): # real signature unknown """ Remo...
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...
As you can see, pop will get us our last item:my_list = ['red', 'blue', 'green'] last_item = my_list.pop() print(last_item) # prints 'green' print(my_list) # prints ['red', 'blue']However, we’ll actually remove that item from our list completely. If that’s the goal...
print('there are no more famous people in the list') print(fpeople) # put your code here #Pop the last item from the list fpeople = ['david bowie', 'robert plant', 'obama', 'taylor swift'] fpeople.pop() print(fpeople)
#Pop the last item from the list fpeople = ['david bowie', 'robert plant', 'obama', 'taylor swift'] fpeople.pop() print(fpeople) # and pop any item except the last item. fpeople = ['david bowie', 'robert plant', 'obama', 'taylor swift'] ...
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 ...
给remove()方法传入一个值,它将从被调用的列表中删除。>>> a.remove('cat') >>> a ['dog', 'fish', 'pig', 'bird'] Tips:如果知道想要删除的值在列表中的下标,del语句就很好用。如果知道想要从列表中删除的值,remove()方法就很好用。排序数值的列表或字符串的列表,能用sort()方法排序。
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 ...