python各种excel写入方式的速度对比
经过实验,新建一个excel表格,该表格拥有7个sheet,每个sheet有800条数据,其中最后一个sheet为空。
首先使用openpyxl进行写入操作,代码如下:
book = openpyxl.Workbook()auths = Auth.objects.filter(owner_id=1)filename = ’导出数据’for auth in auths: sheet = book.create_sheet(auth.name, index = 0) sheet.append([ _('书名'), _('作者'), _('译者'), _('出版社'), _('序列号'), _('总页数'), ]) objs = None objs = Book.objects.filter(owner_id=auth.id) for u in objs: data = [] data.append(u.name) data.append(auth.name) data.append(u.translator) data.append(u.press) data.append(u.serializer) data.append(u.page) sheet.append(data)return ExcelBookResponse(book, filename)
使用xlwt写入数据:
book = xlwt.Workbook()auths = Auth.objects.filter(owner_id=1)filename = ’导出数据’for auth in auths: sheet = book.add_sheet(sensor.name) sheet.write(0, 0, _('书名')) sheet.write(0, 1, _('作者')) sheet.write(0, 2, _('译者')) sheet.write(0, 3, _('出版社')) sheet.write(0, 4, _('序列号')) sheet.write(0, 5, _('总页数')) i = 1 objs = None objs = Book.objects.filter(owner_id=auth.id) for u in objs: sheet.write(i, 0, u.name) sheet.write(i, 1, auth.name) sheet.write(i ,2,u.translator) sheet.write(i ,3,u.press) sheet.write(i, 4, u.serializer) sheet.write(i, 5, u.page) i += 1return ExcelBookResponse(book, filename)
使用XlsxWriter写入数据:
book = xlsxwriter.Workbook(output)auths = Auth.objects.filter(owner_id=1)for auth in auths: sheet = book.add_worksheet(sensor.name) header = [ _('书名'), _('作者'), _('译者'), _('出版社'), _('序列号'), _('总页数'), ] sheet.write_row('A1', header) objs = Book.objects.filter(owner_id=auth.id) i = 1 for u in objs: sheet.write(i, 0, u.name) sheet.write(i, 1, auth.name) sheet.write(i ,2,u.translator) sheet.write(i ,3,u.press) sheet.write(i, 4, u.serializer) sheet.write(i, 5, u.page) i += 1book.close()file_ext = ’xlsx’mimetype = ’application/vnd.openxmlformats-officedocument.spreadsheetml.sheet’# self[’Content-Disposition’] = ’attachment; filename*=UTF-8’’'{2}.{1}'; filename='{0}.{1}'’.format(filename.replace(’'’, ’'’), file_ext, urllib.parse.quote(filename.replace(’'’, ’'’))).encode(’utf8’)return HttpResponse(content=output.getvalue(), content_type=mimetype)
三者的时间比较(两种方式的文件内容是一样的):
openpyxl: 文件大小为110.75kb, 平均时间大约为570ms
xlwt: 文件大小为505.91kb,平均时间大约为440ms
XlsxWrite: 文件大小为109.28kb,平均时间大约为500ms
xlwt写入的行数有限制,因此对于较大的文件来说,XlsxWrite的速度较快一点
补充知识:python写入excel文件太慢如何解决-python往excel写入大量数据
目前用的openpyxl,从数据库获取8W行的数据通过openpyxl写入excel,要花费接近8分钟,这也太慢了,用kettle的插件秒进,python有什么方法能提升速度么,或者openpyxl能批量插入么,按行效率太低了
#!/usr/bin/python# -*- coding: UTF-8 -*-from openpyxl import Workbook as wbookdef xlsx(filename, rows_info, sheet=’Result’):if filename and sheet:wb = wbook()_sheet = wb.active_sheet.title = sheetrow = _sheet.max_rowfor line in rows_info:if isinstance(line, str):row_list = [line]elif isinstance(line, dict):row_list = list(line.values())else:try:row_list = list(line)except:row_list = []for col in range(0, len(row_list)):col_info = row_list[col]_sheet.cell(row, col + 1, col_info)row += 1wb.save(filename)else:return ’文件和sheet不能为空’
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