如何获取表的具体单元格值？

import pandas as pd

# 读取Excel文件
df = pd.read_excel('file.xlsx', sheet_name='Sheet1')

# 获取A1单元格的值
cell_value = df.loc[0, 'A']
print(cell_value)

import org.apache.poi.ss.usermodel.*;

// 读取Excel文件
Workbook workbook = WorkbookFactory.create(new File("file.xlsx"));

// 获取第一个工作表
Sheet sheet = workbook.getSheetAt(0);

// 获取A1单元格的值
Row row = sheet.getRow(0);
Cell cell = row.getCell(0);
String cellValue = cell.getStringCellValue();
System.out.println(cellValue);

using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;

// 读取Excel文件
XSSFWorkbook workbook = new XSSFWorkbook("file.xlsx");

// 获取第一个工作表
ISheet sheet = workbook.GetSheetAt(0);

// 获取A1单元格的值
IRow row = sheet.GetRow(0);
ICell cell = row.GetCell(0);
string cellValue = cell.StringCellValue;
Console.WriteLine(cellValue);