a=open('Blowing in the wind.txt','w') a.write('How many roads must a man walk down\nBefore they call him a man\nHow many seas must a white dove sail\nBefore she sleeps in the sand\n') with open('Blowing in the wind.txt', 'r') as f: content = f.read() print(content)这段代码为什么无法编写这段话进入程序，请指出错误

这段话可能是在代码注释中，而不是在代码中。代码注释通常用于解释代码的目的和功能，但不会被解释器执行。如果要将这段话包含在代码中，可以使用字符串来表示，例如：

lyrics = "How many roads must a man walk down\nBefore they call him a man\nHow many seas must a white dove sail\nBefore she sleeps in the sand\n"

with open('Blowing in the wind.txt', 'w') as f:
    f.write(lyrics)

with open('Blowing in the wind.txt', 'r') as f:
    content = f.read()
    print(content)

这样就可以将歌词写入文件中，并从文件中读取并打印出来。

相关问题

Blowing in the wind（python编程实现） 给以下歌曲（保存在歌词.txt文件中）加上标题（Blowing in the wind） 作者（Bob Dylan） 和 尾注1962 by Warner Bros. Inc. How many roads must a man walk down Before they call him a man How many seas must a white dove sail Before she sleeps in the sand How many times must the cannon balls fly Before they're forever banned The answer my friend is blowing in the wind The answer is blowing in the wind

以下是Python编程实现Blowing in the wind歌曲的标题和尾注添加：

# 打开歌词文件
with open('歌词.txt', 'r') as f:
    lyrics = f.read()

# 添加标题和作者
lyrics = 'Blowing in the wind\n作者：Bob Dylan\n\n' + lyrics

# 添加尾注
lyrics += '\n\n1962 by Warner Bros. Inc.'

# 将歌词文件重新写回
with open('歌词.txt', 'w') as f:
    f.write(lyrics)

执行以上代码后，歌词.txt文件中的内容将变成：

Blowing in the wind
作者：Bob Dylan

How many roads must a man walk down
Before they call him a man
How many seas must a white dove sail
Before she sleeps in the sand
How many times must the cannon balls fly
Before they're forever banned
The answer my friend is blowing in the wind
The answer is blowing in the wind

1962 by Warner Bros. Inc.

创建一个文件Blowing in the wind.txt，在文件头部插入歌名“Blowin'in the wind",在歌名后插入歌手名”Bob Dylan",在文件末尾加上字符串“1962 by Warner Bros. Inc.",在屏幕上输出文件内容

好的，以下是代码实现：

# 打开文件，如果不存在则新建
with open('Blowing in the wind.txt', 'w+') as file:
    # 在文件头部插入歌名
    file.write('Blowin\' in the wind\n')
    # 在歌名后插入歌手名
    file.write('Bob Dylan\n')
    # 在文件末尾加上字符串
    file.write('1962 by Warner Bros. Inc.')

# 打开文件，并读取内容
with open('Blowing in the wind.txt', 'r') as file:
    content = file.read()
    # 在屏幕上输出文件内容
    print(content)

输出结果为：

Blowin' in the wind
Bob Dylan
1962 by Warner Bros. Inc.