我有一個腳本,它使用openpyxl打開模板xlsx文件,然後跨越六個工作表中的每一個,在腳本中添加一些前面生成的列表中的數據並更改單元格的格式。MemoryError使用openpyxl寫入500k +行
我遇到的問題是,在一張紙上,我需要寫9列和500k +行,這給我一個MemoryError
。
Traceback (most recent call last):
File "C:\python27\labs\labs\sqrdist\new_main_ui.py", line 667, in request_and_send_reports
x = sqr_pull.main()
File "C:\Python27\lib\site-packages\memory_profiler-0.32-py2.7.egg\memory_profiler.py", line 801, in wrapper
val = prof(func)(*args, **kwargs)
File "C:\Python27\lib\site-packages\memory_profiler-0.32-py2.7.egg\memory_profiler.py", line 445, in f
result = func(*args, **kwds)
File "C:\python27\labs\labs\sqrdist\sqr_pull.py", line 327, in main
os.remove(temp_attach_filepath)
File "build\bdist.win32\egg\openpyxl\workbook\workbook.py", line 281, in save
File "build\bdist.win32\egg\openpyxl\writer\excel.py", line 214, in save_workbook
File "build\bdist.win32\egg\openpyxl\writer\excel.py", line 197, in save
File "build\bdist.win32\egg\openpyxl\writer\excel.py", line 109, in write_data
File "build\bdist.win32\egg\openpyxl\writer\excel.py", line 134, in _write_worksheets
File "build\bdist.win32\egg\openpyxl\writer\worksheet.py", line 281, in write_worksheet
File "build\bdist.win32\egg\openpyxl\writer\worksheet.py", line 381, in write_worksheet_data
File "build\bdist.win32\egg\openpyxl\writer\worksheet.py", line 404, in write_cell
File "build\bdist.win32\egg\openpyxl\xml\functions.py", line 142, in start_tag
File "C:\Python27\lib\xml\sax\saxutils.py", line 159, in startElement
self._write(u' %s=%s' % (name, quoteattr(value)))
File "C:\Python27\lib\xml\sax\saxutils.py", line 104, in write
self.flush()
MemoryError
我認爲造成這種情況的代碼如下所示,其中KeywordReport
是列表的列表。
ws_keywords = wb.get_sheet_by_name("E_KWs")
for r, row in enumerate(KeywordReport, start=1):
for c, val in enumerate(row, start=1):
mycell = ws_keywords.cell(row=r, column=c)
mycell.value = val
mycell.style = Style(border=thin_border)
ws_keywords.column_dimensions['A'].width = 60.0
ws_keywords.column_dimensions['B'].width = 50.0
ws_keywords.column_dimensions['C'].width = 50.0
ws_keywords.column_dimensions['D'].width = 15.0
ws_keywords.column_dimensions['E'].width = 16.0
ws_keywords.column_dimensions['F'].width = 16.0
ws_keywords.column_dimensions['G'].width = 16.0
for ref in ['A1','B1','C1','D1','E1','F1','G1']:
cell = ws_keywords.cell(ref)
cell.style = Style(font=Font(bold=True),fill=PatternFill(patternType='solid', fgColor=Color('ffd156')), border=thin_border)
gc.collect()
del KeywordReport[:]
gc.collect()
print "start of save"
wb.save(attach_filepath)
gc.collect()
os.remove(temp_attach_filepath)
QCoreApplication.processEvents()
我已經看了http://openpyxl.readthedocs.org/en/latest/optimized.html但我不認爲我可以用這只是沒有傾銷到一個新的工作簿寫的,但我需要在我現有的模板中的數據。
有沒有辦法解決這個問題?
你確定嗎? '>>> a = [1,2,3] >>> del a [:] >>> a []' – samg86
啊,你是對的,對不起。我會刪除我的評論。 –