在Python测试中要删除\ n的字符串格式

Question

我在python程序中有一个json对象，看起来像这样，整个键在一个单行字符串中，\n标识新行：

{
  "key": {
    "id":"2605c6c7-59e3-45cb-8483-a7a34ce6e008",
    "value":"-----BEGIN RSA PRIVATE KEY-----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\nrWhfLZz9Uuu7E5zRv11MRbqVARwv4c1qQPAxJGwpAXLmQPpqwy4=\n-----END RSA PRIVATE KEY-----\n"
   }
}

如果我创建时没有\n（请参见下文）字符，则会出现格式错误。

{
  "key": {
    "id":"2605c6c7-59e3-45cb-8483-a7a34ce6e008",
    "value":"-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----"
   }
}

我正在为此编写测试。我将从文件中读取密钥，它的格式已经是\n。我如何确定它已经重新格式化？如果我打印顶部值来进行控制台，则它将显示在底部。

Answer 1

改为使用文档字符串（"""），它将解决此问题。您会看到没有docstring Python不能换行。

{
  "key": {
    "id":"2605c6c7-59e3-45cb-8483-a7a34ce6e008",
    "value":"""-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----"""
   }
}