AttributeError：“列表”对象没有属性“标题”

Question

enter code here我正在阅读“ Python速成课程”，并列出了一个简单的邀请参加晚餐的人。我在列表上删除，添加和替换了一个名称，问题是：当我尝试打印更新的/新的人员列表时，出现此错误，我尝试了我能想到的一切：

  

AttributeError：“列表”对象没有属性“标题”

我更改了变量名“ Dinner”，再次检查了变量的每次使用。我不知道是什么错误。

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Dinner = ["Emiel", "Louie", "Ben", "Jim", "Ant"]

Invite_Emiel = "Hello" + " " + Dinner[0] + " " + "Would you like to go to dinner with me and some others?\n"
print(Invite_Emiel)


Invite_Louie = "Hello" + " " + Dinner[1] + " " + "Would you like to go to dinner with me and some others?\n"
print(Invite_Louie)


Invite_Ben = "Hello" + " " + Dinner[2] + " " + "Would you like to go to dinner with me and some others?\n"
print(Invite_Ben)


Invite_Jim = "Hello" + " " + Dinner[3] + " " + "Would you like to go to dinner with me and some others?\n"
print(Invite_Jim)


Invite_Ant = "Hello" + " " + Dinner[4] + " " + "Would you like to go to dinner with me and some others?\n"
print(Invite_Ant)


cant_go = Dinner[1] + " " + "Can't go to the party, he called, his daughter died.\n"
print(cant_go)


Dinner_remove = Dinner.remove('Louie')


Dinner_add = Dinner.insert(1, 'Chris')


New_People = "Here's the list for the people coming to dinner:" + " " + Dinner.title()
print(Dinner)

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完全错误：

Traceback (most recent call last):
File "C:\Users\Tyler\Desktop\PCC TS\pcc.py", line 28, in <module>
New_People = "Here's the list for the people coming to dinner:" + " " + Dinner.title()
AttributeError: 'list' object has no attribute 'title'

就像我说的那样，我对出什么问题或如何解决没有任何想法。

Answer 1

问题就出在这里，即使我看不到Dinner是如何定义的。 Dinner是列表对象，列表对象没有title方法，因此Dinner.title()是无效的构造。

您对Dinner的所有其他使用都与它的列表一致。致电Dinner.title()时，您真正想要返回什么？似乎您想要返回Dinner中的项目列表，以便可以为用户打印出来。

您可以将它们与join ... " ".join(Dinner)一起添加。

此外，我假设您的最后一行应为print(New_People)

Answer 2

似乎Dinner变量是列表/元组类型，没有错误消息显示的属性title()。我假设您要将列表打印成字符串。尝试更改线

New_People = "Here's the list for the people coming to dinner:" + " " + Dinner.title()

到

New_People = "Here's the list for the people coming to dinner:" + " " + ",".join(Dinner)

Answer 3

实际上，列表没有.title（）函数，您可以执行以下操作：

New_People = "Here's the list for the people coming to dinner:" + " " + str(Dinner)
print(New_People)