Kernel does not exist on the Jupyter server. Please select another kernel.
时间: 2024-06-04 08:07:54 浏览: 12
这个错误通常是由于 Jupyter Notebook 或 JupyterLab 无法找到您选择的内核所在的位置引起的。您可以尝试重新启动 Jupyter Notebook 并重新选择内核,或者检查您的内核是否已正确安装并在 Jupyter Notebook 中正确配置。您还可以尝试通过运行 `jupyter kernelspec list` 命令来检查可用的内核列表。如果您需要更多帮助,请提供更多详细信息,我会尽力帮助您解决这个问题。
相关问题
Specified named range 'ANY' does not exist in the current workbook.
我非常抱歉,我在之前的回答中犯了一个错误。在 `DataValidationConstraint` 中,`DataValidationConstraint.ValidationType.ANY` 并不能用于设置允许输入任何值。
如果你想允许输入任何值,你可以创建一个没有限制的 `DataValidationConstraint`。这样的约束将不会强制限制输入值的类型或范围。
下面是一个示例代码:
```java
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
public class ExcelValidationExample {
public static void main(String[] args) {
Workbook workbook = new XSSFWorkbook();
Sheet sheet = workbook.createSheet("Sheet1");
// 创建一个单元格范围
CellRangeAddressList addressList = new CellRangeAddressList(0, 0, 0, 0);
// 创建一个数据验证约束(没有限制)
DataValidationHelper validationHelper = sheet.getDataValidationHelper();
DataValidationConstraint validationConstraint = validationHelper.createCustomConstraint("");
// 创建数据验证对象并将其应用于单元格范围
DataValidation dataValidation = validationHelper.createValidation(validationConstraint, addressList);
// 设置数据验证的错误提示信息
dataValidation.setShowErrorBox(true);
dataValidation.setErrorStyle(DataValidation.ErrorStyle.STOP);
dataValidation.createErrorBox("Invalid Value", "Please enter a valid value.");
// 将数据验证应用到单元格范围
sheet.addValidationData(dataValidation);
// 保存Excel文件
try (FileOutputStream fileOut = new FileOutputStream("workbook.xlsx")) {
workbook.write(fileOut);
} catch (IOException e) {
e.printStackTrace();
}
}
}
```
在上述示例中,我们创建了一个没有限制的 `validationConstraint`,表示允许输入任何值。确保你已添加正确的依赖项来使用 Apache POI 库,并修改代码以适应你的需求。对于旧版本的Excel文件(.xls),请使用 `HSSFWorkbook`。
The /bin/sh: 1: source: Permission denied does not exist. Please check it.
This error message indicates that the user running the command does not have permission to execute the "source" command. "source" is a command used to execute commands from a shell script in the current shell environment.
To fix this error, you can try the following steps:
1. Check if the file you are trying to source exists in the specified location and has the correct permissions.
2. Check if the user running the command has the necessary permissions to execute the "source" command. You can check this by running the "id" command to view the user's group memberships and permissions.
3. If you are running the source command within a shell script, make sure that the script has the correct permissions to be executed. You can use the "chmod" command to modify the file permissions.
4. If none of the above steps work, try running the command with elevated privileges using "sudo" or contact the system administrator for further assistance.
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