Question

我正在尝试将我的xls文件输出重定向到流，但我遇到了错误。

以下是我正在使用的代码

#!/usr/bin/env python

import codecs

import datetime

import decimal

import csv

import sys

import xlrd

def main(self):
    # We need to do this dance here, because we aren't writing through agate.
    if six.PY2:
        stream = codecs.getwriter('utf-8')(self.output_file)
    else:
        stream = self.output_file

def dump_xls(data,active_worksheet):
                active_worksheet.append(data)
     file_name = "temp.xls"


     reader = csv.reader(self.input_file,delimiter=",")

     workbook  = openpyxl.Workbook()
     worksheet = workbook.active
     for i in reader:
         dump_xls(i,worksheet)
     workbook.save(file_name)

def launch_new_instance():
    utility = CSVXLS()
    utility.run()


if __name__ == '__main__':
    launch_new_instance

()

我已经有输入流和所有流信息。我怎样才能将输出文件转换为流，以便数据在输出处可见。

我是python的新手，非常感谢任何帮助。

非常感谢!!!

Answer 1

我不知道我明白你在寻找什么StringIO，但是import StringIO ... ... s_io = StringIO.StringIO() # Declare stream for i in reader: dump_xls(i,worksheet) s_io.write(i) # Write to stream.也是一个流，你可以像

一样写

s_io

最后，stream代表CustomListAdapter(Context context, ArrayList<String> subjects) { super(context, R.layout.custom_list_view, subjects); } @NonNull @Override public View getView(final int position, View convertView, ViewGroup parent) { LayoutInflater layoutInflater = LayoutInflater.from(getContext()); View customView = layoutInflater.inflate(R.layout.custom_list_view, parent, false); singleSubject = getItem(position); TextView singleText = (TextView) customView.findViewById(R.id.listSubjectsMyCourses); colorLayout = (LinearLayout)customView.findViewById(R.id.colorForSubjects); relativeLayout = (RelativeLayout) customView.findViewById(R.id.relativeForView); parentLayout = (RelativeLayout) customView.findViewById(R.id.parentLayout); points = new ArrayList<>(); selected = new ArrayList<>(); selectedsttring = new ArrayList<>(); customView.findViewById(R.id.textViewForGrades); tinyDB = new TinyDB(getContext()); spinnerForGradePoints = (Spinner)customView.findViewById(R.id.spinnerForGrades); final ArrayAdapter<String> gradePointAdapter = new ArrayAdapter<String>(getContext(), android.R.layout.simple_dropdown_item_1line, UserCourseSelection2.userSubjectGradePoint); spinnerForGradePoints.setAdapter(gradePointAdapter); spinnerForGradePoints.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) { selectedItempos = adapterView.getSelectedItemPosition(); String getSelectedItem = adapterView.getItemAtPosition(i).toString(); tinyDB.putInt("selected", selectedItempos); } @Override public void onNothingSelected(AdapterView<?> adapterView) { } }); singleText.setText(singleSubject); colorLayout.setBackgroundColor(UserCourseSelection2.userSubjectsListColor.get(position)); int getSelected = tinyDB.getInt("selected"); spinnerForGradePoints.setSelection(getSelected); return customView; }

如何使用python将文件传输到流中

1 个答案: