Python 使用openpyxl以优化的方式编辑XLSX样式

我知道不可能在优化写入中定义样式，但是有没有办法写入标题定义样式，然后将优化写入设置为true以写入其余数据？ 像这样的

wb = Workbook(encoding="utf-8")
ws = wb.create_sheet()
#change styles and write header
wb.optimized_write=True
#write rest of data

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简短的回答是不，不是直接的

更长的答案是，您必须更新openpyxl.writer.dump_工作表.ExcelDumpWriter和openpyxl.writer.dump_工作表.DumpWorksheet

查看DumpWorksheet是如何使用DumpWorksheet.append写入行的，其中有两种预设样式之一用于设置datetime单元格的样式

# Example on how you would use this
from openpyxl.writer.dump_worksheet import ExcelDumpWriter, DumpWorksheet
from openpyxl.writer.styles import StyleWriter

wb.optimized_worksheet_class=MyDumpWorksheet

my_header_style = Style()
my_header_style.font.bold = True

writer = ExcelDumpWriter(workbook)
writer.style_writer._style_list.append(my_header_style)
writer.save(filename)

# A start on how you would overload DumpWorksheet.append()
class MyDumpWorksheet(DumpWorksheet):
    def __init__(self, parent_workbook, title):
        DumpWorksheet.__init__(self, parent_workbook, title)

    def append(self, row):
        """Overload to write the correct styles"""

        # .... keep the initial setup before this
        attrs = {'r': '%d' % row_idx,
                 'spans': '1:%d' % span}
        start_tag(doc, 'row', attrs)

        if row == 1:
            # Assuming cell is a string here --
            for col_idx, cell in enumerate(row):
                if cell is None:
                    continue

                coordinate = '%s%d' % (get_column_letter(col_idx + 1), row_idx)
                attributes = {'r': coordinate}

               # Assuming string!!
                cell = self._string_builder.add(cell)

                # 2 here refers to the style you added to writer.style_writer._style_list.
                attributes['t'] = {'type':Cell.TYPE_STRING, 'style':'2'} 
                start_tag(doc, 'c', attributes)
                tag(doc, 'v', body='%s' % cell)
                end_tag(doc, 'c')
            end_tag(doc, 'row')
        else:
            # Keep to the original append() logic

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现在可以在只写模式下使用样式。要做到这一点，您需要使用WriteOnlyCell，并将其包含在传递给工作表的任何iterable中。

标题是工作表的第一行吗？是的，确实是。它是第一行，也是工作表中的第一行。