Question

我正在尝试解析文件，然后使用openpyxl将处理后的数据保存到excel中。当要解析的文件很小时，我能够成功保存。但是当要解析的文件很大时，我会收到以下错误：

Traceback (most recent call last):
      File "C:\Users\522094\Desktop\vdbench\vdbench_new - Copy.py", line 195, in <module>
        a.generate_report()
      File "C:\Users\522094\Desktop\vdbench\vdbench_new - Copy.py", line 185, in generate_report
        self.wb.save(filename=report_path)
      File "C:\Python27\lib\site-packages\openpyxl\workbook\workbook.py", line 339, in save
        save_workbook(self, filename)
      File "C:\Python27\lib\site-packages\openpyxl\writer\excel.py", line 268, in save_workbook
        writer.save(filename)
      File "C:\Python27\lib\site-packages\openpyxl\writer\excel.py", line 250, in save
        self.write_data()
      File "C:\Python27\lib\site-packages\openpyxl\writer\excel.py", line 81, in write_data
        self._write_worksheets()
      File "C:\Python27\lib\site-packages\openpyxl\writer\excel.py", line 199, in _write_worksheets
        xml = ws._write()
      File "C:\Python27\lib\site-packages\openpyxl\worksheet\worksheet.py", line 866, in _write
        return write_worksheet(self)
      File "C:\Python27\lib\site-packages\openpyxl\writer\worksheet.py", line 177, in write_worksheet
        xf.write(tables.to_tree())
      File "C:\Python27\lib\contextlib.py", line 24, in __exit__
        self.gen.next()
      File "C:\Python27\lib\site-packages\et_xmlfile\xmlfile.py", line 50, in element
        self._write_element(el)
      File "C:\Python27\lib\site-packages\et_xmlfile\xmlfile.py", line 77, in _write_element
        xml = tostring(element)
      File "C:\Python27\lib\xml\etree\ElementTree.py", line 1126, in tostring
        ElementTree(element).write(file, encoding, method=method)
      File "C:\Python27\lib\xml\etree\ElementTree.py", line 820, in write
        serialize(write, self._root, encoding, qnames, namespaces)
      File "C:\Python27\lib\xml\etree\ElementTree.py", line 939, in _serialize_xml
        _serialize_xml(write, e, encoding, qnames, None)
      File "C:\Python27\lib\xml\etree\ElementTree.py", line 939, in _serialize_xml
        _serialize_xml(write, e, encoding, qnames, None)
      File "C:\Python27\lib\xml\etree\ElementTree.py", line 939, in _serialize_xml
        _serialize_xml(write, e, encoding, qnames, None)
      File "C:\Python27\lib\xml\etree\ElementTree.py", line 940, in _serialize_xml
        write("</" + tag + ">")
    MemoryError

请建议如何解决。

Answer 1

您没有指定您正在使用哪种工作簿但是根据官方文档更快的替代方法是使用工作簿的只写模式，然后，您可以将工作簿设置为只写模式打开实例化中的标志：

>>> from openpyxl import Workbook
>>> wb = Workbook(write_only=True)
>>> ws = wb.create_sheet()
>>>
>>> # now we'll fill it with 100 rows x 200 columns
>>>
>>> for irow in range(100):
...     ws.append(['%d' % i for i in range(200)])
>>> # save the file
>>> wb.save('new_big_file.xlsx')

官方文档如果您需要更多信息：

https://openpyxl.readthedocs.io/en/default/optimized.html#write-only-mode

使用openpyxl保存excel

1 个答案: