xlwt动态编写excel表格

Question

我习惯用以下方式创建电子表格：

    wbk = xlwt.Workbook()
    earnings_tab = wbk.add_sheet('EARNINGS')
    wbk.save(filepath)

有没有办法不将文件保存到文件路径，而是动态地将其写入下载文件的用户？或者我需要将其保存为tmp文件，然后将其提供给用户？

Answer 1

这是我在Django使用的：

response = HttpResponse(content_type='application/vnd.ms-excel')
response['Content-Disposition'] = 'attachment; filename=file.xls'
book.save(response)
return response

Answer 2

class QueryToExcel(object):
def __init__(self, doc_name = 'doc_name'):
    #some set up stuff
    self.b_io = BytesIO()
    self.workbook = pd.ExcelWriter(self.b_io, engine='xlsxwriter')
    self.run() #fill in workbook with pandas dataframes
    self.workbook.save()

def get_workbook(self):
    return self.b_io.getvalue()


app = Flask(__name__)
app.debug = True 
@app.route('/pvh/', methods = ['GET'])
def get_workbook(self):
    return self.b_io.getvalue()

Answer 3

引用the documentation for the ^{} method of ^{}：

It can also be a stream object with a write method, such as a StringIO, in which case the data for the excel file is written to the stream.

修改示例：

import StringIO

f = StringIO.StringIO() # create a file-like object 

wbk = xlwt.Workbook()
earnings_tab = wbk.add_sheet('EARNINGS')

wbk.save(f) # write to stdout

有些人可能建议您使用cStringIO，而不是StringIO，但请注意，上次检查时cStringIO不能正确处理Unicode。

值得注意的是，Python 3中的StringIO被io替换。