python如何将九九乘法表写入到Excel？

import pandas as pd
<h1>创建空列表存储数据</h1><p>data = []</p>
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                <p><span>立即学习</span>“<a href="https://pan.quark.cn/s/00968c3c2c15" style="text-decoration: underline !important; color: blue; font-weight: bolder;" rel="nofollow" target="_blank">Python免费学习笔记（深入）</a>”；</p><h1>生成九九乘法表（下三角）</h1><p>for i in range(1, 10):
row = []
for j in range(1, 10):
if j <= i:
row.append(f"{j}×{i}={i*j}")
else:
row.append("")  # 上三角留空
data.append(row)</p><h1>转为DataFrame，行和列标签设为1-9</h1><p>df = pd.DataFrame(data, index=range(1, 10), columns=range(1, 10))

# 写入Excel，不保存行/列索引名（可选）
df.to_excel("九九乘法表.xlsx", sheet_name="乘法表", index=True, header=True)
print("九九乘法表已成功写入 Excel 文件！")