mylist.remove(item) print(mylist) 执行和输出: 可以看出该项已移除,它后边的每项的索引减一。 5.2. 移除出现多次的元素 在接下来的示例中,我们新建了一个包含多个元素的列表,而要移除的项 21,在列表中出现了两次。 # Remove item that is present multiple times in the List ...
中文:看看这个列表`my_list = [10, 20, 30]`。如果我想移除第二个元素,我只要做`del my_list[1]`。多方便啊! 3. 英文:In the dictionary `my_dict = {'key1': 'value1', 'key2': 'value2'}$, if I decide to delete the key - value pair with the key 'key2', I can use `del ...
直接传元素值是不行的,会报错: >>>lst=[1,2,3]>>>del(2)File"<stdin>",line1SyntaxError:cannotdeleteliteral del还可以删除整个列表: >>>lst=[1,2,3]>>>del(lst)>>>lstTraceback(mostrecentcalllast):File"<stdin>",line1,in<module>NameError:name'lst'isnotdefined 以上就是本文的全部内容,如...
>>>lst=[1,2,3]>>>del(2)File"<stdin>",line1SyntaxError:cannot delete literal del还可以删除整个列表: 代码语言:python 代码运行次数:0 复制 Cloud Studio代码运行 >>>lst=[1,2,3]>>>del(lst)>>>lst Traceback(most recent call last):File"<stdin>",line1,in<module>NameError:name'lst'isno...
|__contains__(self, key, /)| Return keyinself.| |__delitem__(self, key, /)|Delete self[key].| |__eq__(self, value, /)| Return self==value.| |__ge__(self, value, /)| Return self>=value.| |__getattribute__(self, name, /)|Return getattr(self, name).| ...
fruits = ['banana', 'orange', 'mango', 'lemon']first_fruit = fruits[-4]last_fruit = fruits[-1]second_last = fruits[-2]print(first_fruit) # bananaprint(last_fruit) # lemonprint(second_last) # mango 拆箱清单项目 lst = ['item','item2','item3', 'item4', 'item5'] ...
(从 0 开始)delete(first, last=None)删除参数 first 到 last 范围内(包含 first 和 last)的所有选项get(first, last=None)返回一个元组,包含参数 first 到 last 范围内(包含 first 和 last)的所有选项的文本index(index)返回与 index 参数相应选项的序号itemcget(index, option)获得 index 参数指定的项目...
>>>lst=[1,2,3]>>>del(2)File"<stdin>",line1SyntaxError:cannot delete literal 1. 2. 3. 4. del还可以删除整个列表: >>>lst=[1,2,3]>>>del(lst)>>>lst Traceback(most recent call last):File"<stdin>",line1,in<module>NameError:name'lst'isnotdefined 1. ...
id(list3)= 35456648 """ 3. del 是删除引用而不是删除对象,对象由自动垃圾回收机制(GC)删除 看这个例子: >>> x = 1 >>> del x >>> x Traceback (most recent call last): File "", line 1, in x NameError: name "x" is not defined ...
It differs from .remove() in two aspects: It takes the index of the object to remove rather than the object itself. It returns the value of the removed object. Calling .pop() without arguments removes and returns the last item in the list: Python >>> a = ["a", "b", "c", "...