列表方法之间有什么区别append()和extend ()?? What's the difference between the list methods append() and extend ()? 列表方法之间有什么区别append()和extend ()?? What is the difference between the list methods append() and extend ()? Extend (),对象的所有属性都添加到目标对象。Extend (), properties from all of the objects are added to the target object.使用extend ()可以将一个列表合并到另一个列表中。 Using extend (), one list can be concatenated to another. Extend ()指定了一个参数,则意味着参数target被省略。Extend (), this means the target argument was omitted.
Extend (),对象的所有属性都添加到目标对象(target参数)。Extend (), properties from all of the objects are added to the target object.Iwillextend yourdeadlinetwoweeks.(截止日期我给你们延长两星期吧。 I am asking you to consider extending my offer deadline by two weeks, until[insert date]. 因此对于列表我们可以说+=就是list.extend 的“快捷方式”. That's why we say that for lists,+= is a“shorthand” for list. extend . 除了extend ()方法,你还可以通过+操作符来连接两个列表。 Besides extend () method, you could concatenate two lists by using+ operator. 要使示例输出正确,请将abc行更改为:x.extend ('abc')。 To make your example output correct, change the abc line to: x. extend ('abc'). BlazBlue:ChronophantasmaExtend 》是2D格斗和视觉小说结合的BLAZBLUE系列的第六个作品。 BlazBlue: Chronophantasma Extend ' is the sixth installment of the BlazBlue series, a combination of 2D fighting acti…. BlazBlue:ChronophantasmaExtend 》是2D格斗和视觉小说结合的BLAZBLUE系列的第六个作品。 BlazBlue: Chronophantasma Extend ' is the sixth installment of the BlazBlue series, a combination of 2D fighting action game and visual novel. 如果我们想要连接两个列表,则不使用extend ,结果对象将包含列表列表。 Without extend , if we want to join two lists, the resulting object will contain a list of lists.你可能想知道什么是更高效的,因为append可以用来实现与extend 相同的结果。 You may wonder what is more performant, since append can be used to achieve the same outcome as extend . Extend (L)通过添加指定列表的所有元素来扩充列表,相当于a[len(a):]=L。Extend (L) Augment the list by adding all the elements of the specified list, which is equivalent to a[len(a):]= L.Lt;<extend >>用例通过在基本用例序列中概念性地插入额外的动作序列来实现这一点。 The<<extend >> use case accomplishes this by conceptually inserting additional action sequences into the base use-case sequence. 不能用链表做关键字,因为链表可以用索引、切割或者append()和extend ()等方法改变。 You can't use lists as keys, since lists can be modified in place using index assignments, slice assignments, or methods like append() and extend (). Extend (L)将一个给定列表中的所有元素都添加到另一个列表中,相当于a[len(a):]=L。Extend (L) Augment the list by adding all the elements of the specified list, which is equivalent to a[len(a):]= L.Append和extend 是python中的可扩展性机制之一。 Append and extend are one of the extensibility mechanisms in python. The Extend " in the black hand open test.
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