反转线条和单词

Question

要写一个程序，接收文件路径和“任务”作为输入，并根据输入的“任务”执行功能。如果任务输入是“rev”，程序需要反向打印文件内容（包括行和词）。

我试过了：

def file_play():
    file_path = input("Please enter a file path: ")
    task = input("Please enter a task: ")
    my_file = open(file_path, "r")

    if task == "rev":
        for line in my_file:
            for word in line.split():
                print(word[::-1], end=" ")
    my_file.close()

文件中的文本：

i believe i can fly i believe i can touch the sky
i think about it every night and day spread my wings and fly away

当前输出：

i eveileb i nac ylf i eveileb i nac hcuot eht yks i kniht tuoba ti yreve thgin dna yad daerps ym sgniw dna ylf yawa

所需输出：

yks eht hcuot nac i eveileb i ylf nac i eveileb i
yawa ylf dna sgniw ym daerps yad dna thgin yreve ti tuoba kniht i

Answer 1

您正在颠倒每个单词。你想要的是像这样反转线：

def file_play():
    file_path = input("Please enter a file path: ")
    task = input("Please enter a task: ")
    my_file = open(file_path, "r")

    if task == "rev":
        for line in my_file:
            print(line[::-1])
        my_file.close()

Answer 2

你可以把线倒过来:

task = ['i believe i can fly i believe i can touch the sky', 'i think about it every night and day spread my wings and fly away']

for line in task:
    print(line[::-1], end='\n')

输出

yks eht hcuot nac i eveileb i ylf nac i eveileb i
yawa ylf dna sgniw ym daerps yad dna thgin yreve ti tuoba kniht i

Answer 3

如果是字符串，则先转成列表
a = "Hack it"
a = list(a)
a.reverse()
b = ""
for i in range(len(a)):
b += a[i]
print("Reversed string/list: " + b)

输出：

Reversed string/list: ti kcaH

真心希望这对您有所帮助！

反转线条和单词

Reversing lines and words

python

reverse

file