Python ValueError:对关闭的文件执行I/O操作以\u excel

我正在尝试对

xlsx

文件中的

concat

工作表执行操作，发现以下错误：

Traceback (most recent call last):
  File "C:\Users\DELL\AppData\Local\Programs\Python\Python38-32\lib\xml\etree\ElementTree.py", line 832, in _get_writer
    yield file.write
  File "C:\Users\DELL\AppData\Local\Programs\Python\Python38-32\lib\xml\etree\ElementTree.py", line 772, in write
    serialize(write, self._root, qnames, namespaces,
  File "C:\Users\DELL\AppData\Local\Programs\Python\Python38-32\lib\xml\etree\ElementTree.py", line 937, in _serialize_xml
    _serialize_xml(write, e, qnames, None,
  File "C:\Users\DELL\AppData\Local\Programs\Python\Python38-32\lib\xml\etree\ElementTree.py", line 937, in _serialize_xml
    _serialize_xml(write, e, qnames, None,
  File "C:\Users\DELL\AppData\Local\Programs\Python\Python38-32\lib\xml\etree\ElementTree.py", line 937, in _serialize_xml
    _serialize_xml(write, e, qnames, None,
  File "C:\Users\DELL\AppData\Local\Programs\Python\Python38-32\lib\xml\etree\ElementTree.py", line 931, in _serialize_xml
    write(" %s=\"%s\"" % (qnames[k], v))
MemoryError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "D:/Python Projects/MyAuditPy/pd_read.py", line 265, in <module>
    join2.to_excel("shared_BM_NL_Q2_DNS.xlsx")
  File "C:\Users\DELL\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pandas\core\generic.py", line 2175, in to_excel
    formatter.write(
  File "C:\Users\DELL\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pandas\io\formats\excel.py", line 738, in write
    writer.save()
  File "C:\Users\DELL\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pandas\io\excel\_openpyxl.py", line 43, in save
    return self.book.save(self.path)
  File "D:\Python Projects\MyAuditPy\venv\lib\site-packages\openpyxl\workbook\workbook.py", line 392, in save
    save_workbook(self, filename)
  File "D:\Python Projects\MyAuditPy\venv\lib\site-packages\openpyxl\writer\excel.py", line 293, in save_workbook
    writer.save()
  File "D:\Python Projects\MyAuditPy\venv\lib\site-packages\openpyxl\writer\excel.py", line 275, in save
    self.write_data()
  File "D:\Python Projects\MyAuditPy\venv\lib\site-packages\openpyxl\writer\excel.py", line 75, in write_data
    self._write_worksheets()
  File "D:\Python Projects\MyAuditPy\venv\lib\site-packages\openpyxl\writer\excel.py", line 215, in _write_worksheets
    self.write_worksheet(ws)
  File "D:\Python Projects\MyAuditPy\venv\lib\site-packages\openpyxl\writer\excel.py", line 200, in write_worksheet
    writer.write()
  File "D:\Python Projects\MyAuditPy\venv\lib\site-packages\openpyxl\worksheet\_writer.py", line 360, in write
    self.close()
  File "D:\Python Projects\MyAuditPy\venv\lib\site-packages\openpyxl\worksheet\_writer.py", line 368, in close
    self.xf.close()
  File "D:\Python Projects\MyAuditPy\venv\lib\site-packages\openpyxl\worksheet\_writer.py", line 299, in get_stream
    pass
  File "C:\Users\DELL\AppData\Local\Programs\Python\Python38-32\lib\contextlib.py", line 120, in __exit__
    next(self.gen)
  File "D:\Python Projects\MyAuditPy\venv\lib\site-packages\et_xmlfile\xmlfile.py", line 50, in element
    self._write_element(el)
  File "D:\Python Projects\MyAuditPy\venv\lib\site-packages\et_xmlfile\xmlfile.py", line 77, in _write_element
    xml = tostring(element)
  File "C:\Users\DELL\AppData\Local\Programs\Python\Python38-32\lib\xml\etree\ElementTree.py", line 1133, in tostring
    ElementTree(element).write(stream, encoding,
  File "C:\Users\DELL\AppData\Local\Programs\Python\Python38-32\lib\xml\etree\ElementTree.py", line 772, in write
    serialize(write, self._root, qnames, namespaces,
  File "C:\Users\DELL\AppData\Local\Programs\Python\Python38-32\lib\contextlib.py", line 131, in __exit__
    self.gen.throw(type, value, traceback)
  File "C:\Users\DELL\AppData\Local\Programs\Python\Python38-32\lib\xml\etree\ElementTree.py", line 832, in _get_writer
    yield file.write
  File "C:\Users\DELL\AppData\Local\Programs\Python\Python38-32\lib\contextlib.py", line 525, in __exit__
    raise exc_details[1]
  File "C:\Users\DELL\AppData\Local\Programs\Python\Python38-32\lib\contextlib.py", line 510, in __exit__
    if cb(*exc_details):
  File "C:\Users\DELL\AppData\Local\Programs\Python\Python38-32\lib\contextlib.py", line 382, in _exit_wrapper
    callback(*args, **kwds)
ValueError: I/O operation on closed file.

作为此行中的错误：

join2.to_excel("shared_BM_NL_Q2_DNS.xlsx")

我还需要一些人建议我如何为这样的代码执行一个好的方式

---

我希望有人能帮助我如何解决这个错误

最终我找到了解决方案，这是因为我解决了

xlsx

中行的限制，而不是将

转换为excel

使用

转换为csv

，如下代码：

join2.to_csv("shared_BM_NL_Q2_DNS.csv")

---

首先，您的代码可以通过使用

pd.read\u excel

将所有内容读入数据帧的dict中来大大简化，这些数据帧将由工作表名称键入。然后迭代dict并执行相同的操作（只允许编写一次）。但这并不能纠正错误。@Alolz非常感谢您的支持，您能给我举个例子吗？因为我有很多优秀的工作表：D

join2.to_csv("shared_BM_NL_Q2_DNS.csv")