Question

我正在创建一个名为show_magicians()的函数，它打印出名为magician_names的列表的内容。

我正在尝试创建一个名为make_great()的新功能，该功能会将列表magician_names修改为"The Great [Insert name]"。

但是我只能打印"The Great Nick"并且我不确定如何修改此列表，这样当我调用show_magicians时，该函数将打印出修改后的列表。

例如：

magician_names = ['jim', 'kaitlyn', 'nick', 'paul', 'kyle']

make_great功能后：

magician_names = ['The Great jim', 'The Great kaitlyn', 'The Great nick', 'The Great paul', 'The Great kyle']

以下是我目前的代码：

def show_magicians(magician_names):
    for magician_name in magician_names:
        print(magician_name.title())


magician_names = ['jim', 'kaitlyn', 'nick', 'paul', 'kyle']

show_magicians(magician_names)

def make_great(magician_names):
    for magician_name in magician_names:
        print("The Great " + magician_name)


make_great(magician_names)

Answer 1

我构造了这样的代码：

def show_magicians(magician_names):
    for magician_name in magician_names:
        print(magician_name.title())

def make_great(magician_names):
    for magician_name in magician_names:
        print("The Great " + magician_name)

magician_names = ['jim', 'kaitlyn', 'nick', 'paul', 'kyle']

show_magicians(magician_names)
make_great(magician_names)

<强>输出：

Jim
Kaitlyn
Nick
Paul
Kyle
The Great jim
The Great kaitlyn
The Great nick
The Great paul
The Great kyle

我应该指出def make_great(magician_names):没有创建新列表并返回它，它会将列表作为参数，在这种情况下，magician_names遍历它并添加短语＆＃34;伟大的......＆＃34;。

作者确实得到了他的偏见的答案：https://ehmatthes.github.io/pcc/

我也有这本书，但是，我没有遇到你遇到的问题。

Answer 2

为什么不使用列表理解而不是函数？：

require "debug"

Answer 3

你是在正确的轨道，但基本的方法是你的功能1）制作一个空列表; 2）对于传入列表中的每个条目，创建修改后的名称; 3）将修改后的名称添加到您创建的（一次空）列表中。然后传回那个清单。

示例：

def make_great(magician_list):
    great_list=[]
    for name in magician_list:
        newname = "The Great " + name
        great_list.append(newname)

    return great_list

magician_names = ['jim', 'kaitlyn', 'nick', 'paul', 'kyle']
print magician_names
great_magician_names = make_great(magician_names)
print great_magician_names

Answer 4

这个怎么样？

magician_names = ['jim', 'kaitlyn', 'nick', 'paul', 'kyle']

print(list(map(lambda x:"The Great {}".format(x),magician_names)))

输出：

['The Great jim', 'The Great kaitlyn', 'The Great nick', 'The Great paul', 'The Great kyle']

修改python中的List

4 个答案: