>>> del list # Remove the redefined name>>> list() # Now the original name is available again[]如果您不小心在交互式会话中重新分配了内置名称，则可以运行快速del name语句从作用域中删除重新定义，并在工作作用域中恢复原始内置名称。从可变集合中删除项目 从列表或字典等可变
In this quiz, you’ll test your understanding of How to Remove Items From Lists in Python.By working through this quiz, you’ll revisit the different approaches to removing items from a list in Python, including .pop(), .remove(), the del statement, and more....
>>>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 运行 AI代码解释 >>>lst=[1,2,3]>>>del(lst)>>>lst Traceback(most recent call last):File"<stdin>",line1,in<module>NameError:name'lst'isnotdefined ...
1...使用内置函数set lists = [1,1,2,3,4,6,6,2,2,9] lists = list(set(lists)) 先将列表转换为集合,因为集合是不重复的,故直接删除重复元素 2.使用del...] lists.sort() t = lists[-1] for i in range(len(lists)-2,-1,-1): # print(i) if t == lists[i]: # del...list...
1、list:列表 2、reverse:反向 3、true:真 4、false:假 5、append:附加 6、extend:扩展 7、insert:插入 8、pop:取出 9、remove:移除 10、del(delete):删除 11、clear:清除 12、sort:排序 八、集合 1、set:集合/设置 2、add:添加 3、update:更新 ...
Because Python is a versatile programming language, there are many ways to remove an item from a list in Python. In this tutorial, we will look at a few key methods, including built-in functions likeremove()andpop(), list comprehensions, and thedelkeyword. ...
del list1[2]#删除第三个元素 list1 1. 2. 3. 运行结果 ['physics', 'chemistry', 2000] 1. 列表操作包含以下函数: 1、cmp(list1, list2):比较两个列表的元素 2、len(list):列表元素个数 3、max(list):返回列表元素最大值 4、min(list):返回列表元素最小值 ...
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...
def__delitem__(self,key): print('del %s'%(key)) # 实例化 a=A() # 使用['']方式赋值,其实就是调用__setitem__()方法 a['B']='BB' a.__setitem__('B','BB') # use __setitem__() set B value BB # 使用['']调用元素,其实就是调用__getitem__()方法 ...
if even(a[i]): del a[i] i -= 1 # --> IndexError: list index out of range prin...