Question

我有一个类似于text = u'\xd7\nRecord has been added successfully, record id: 92'的字符串。我试图从字符串中删除转义字符\xd7和\n，以便可以将其用于其他目的。

我尝试了str(text)。可以，但是无法删除字符\xd7。

UnicodeEncodeError：'ascii'编解码器无法在其中编码字符u'\ xd7' 位置0：序数不在范围内（128）

有什么办法可以从字符串中删除上述任何转义字符？谢谢

Answer 1

您可以使用replace尝试以下操作：

text=u'\xd7\nRecord has been added successfully, record id: 92'
bad_chars = ['\xd7', '\n', '\x99m', "\xf0"] 
for i in bad_chars : 
    text = text.replace(i, '') 
text

Answer 2

您可以通过“切片”字符串来实现：

string = '\xd7\nRecord has been added successfully, record id: 92'
text = string[2:]

Answer 3

似乎您有一个像python 2.x一样的unicode字符串，我们有一个像

inp_str = u'\ xd7 \ n记录已成功添加，记录ID：92'

如果要删除转义字符，这意味着几乎是特殊的字符，我希望这是不使用任何正则表达式或任何硬编码即可仅获取ascii字符的方法之一。

private OutputStream getEncryptingOutputStream(POIFSFileSystem fileSystem, String password) throws IOException, GeneralSecurityException
{
    EncryptionInfo encryptionInfo = new EncryptionInfo(EncryptionMode.standard);
    Encryptor encryptor = encryptionInfo.getEncryptor();
    encryptor.confirmPassword(password);
    return encryptor.getDataStream(fileSystem);
}

private void encryptSpreadSheet(String sourcePath, String destinationPath) throws IOException, GeneralSecurityException, InvalidFormatException
{
    try (POIFSFileSystem fileSystem = new POIFSFileSystem())
    {
      //sourcePath = "/var/tmp/dummy.xlsx"
      //destinationPath = "/var/tmp/dummy_encrypted.xlsx"
      try (Workbook wb = WorkbookFactory.create(new File(sourcePath));
            OutputStream out = getEncryptingOutputStream(fileSystem, "password");)
      {
         wb.write(out);
      }

      try (FileOutputStream fileOutputStream = new FileOutputStream(new File(destinationPath)))
      {
          fileSystem.writeFilesystem(fileOutputStream);
      }
    }
}

首先我做了编码，因为它已经是unicode了，所以在编码为ascii时，如果有任何字符不在ascii级别，它将被忽略。您只需去除'\ n'

希望这对您有所帮助：）

Answer 4

我相信正则表达式可以提供帮助

import re
text = u'\xd7\nRecord has been added successfully, record id: 92'
res = re.sub('[^A-Za-z0-9]+', ' ', text).strip()

结果：

'Record has been added successfully record id 92'

Answer 5

您可以使用内置的正则表达式库。

import re
text = u'\xd7\nRecord has been added successfully, record id: 92'
result = re.sub('[^A-Za-z0-9]+', ' ', text)

print(result)

那会吐出Record has been added successfully record id 92

如果您可以生活在没有标点符号的地方，这似乎可以通过您的测试案例。

Answer 6

尝试regex。


import re
def escape_ansi(line):
    ansi_escape =re.compile(r'(\xd7|\n)')
    return ansi_escape.sub('', line)

text = u'\xd7\nRecord has been added successfully, record id: 92'
print(escape_ansi(text))

如何从python中的字符串中删除转义符？

6 个答案: