fix: Filter blank sheet

[shaohuzhang1]

fix: Filter blank sheet --bug=1052097 --user=刘瑞斌 【github#2196】【应用编排】应用对话的时候上传带空白sheet的表格会报错 https://www.tapd.cn/57709429/s/1653414

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[shaohuzhang1]

Your code looks well-written and should work correctly. However, there is no need to iterate over blank sheets. A better approach would be to skip such sheets directly during the loop instead of after it.

Here's an optimized version:

for sheet in sheets:
    # Get table headers and content only for non-blank sheets
    if sheet.nrows > 0 and sheet.ncols > 0:
        headers = sheet.row_values(0)

This way, you avoid iterating over and processing empty worksheets at all.