Question

我正在构建我的第一个烧瓶应用程序，但在我的脚本中稍后在函数中访问我上传的文件时遇到问题。我正在使用基本的Flask Upload脚本的变体，目前我有两种形式，每种形式都采用某种文本文件。我试图稍后通过我的脚本中的函数运行输入文件来比较差异。就像现在一样，我收到了这个错误：

UnboundLocalError: local variable 'filename1' referenced before assignment

如果这是表单问题或保存的文件问题，我正试图解决这个问题。这是我的上传文件夹：

UPLOAD_FOLDER = '/uploads'
ALLOWED_EXTENSIONS = set(['doc', 'docx', 'html', 'txt','rtf'])

app = Flask(__name__)
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
app.secret_key = 'MySecretKey'

if not os.path.isdir(UPLOAD_FOLDER):
     os.mkdir(UPLOAD_FOLDER)

这是其中一个文件上传，另一个除文件名外几乎相同：

def allowed_audio_file(reference_file):
     return '.' in reference_file and \
           reference_file.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS

@app.route('/referenceupload', methods=['GET', 'POST'])
def upload_reference_file():   
    if request.method == 'POST':
        # check if the post request has the file part
        if 'file' not in request.files:
           flash('No file part')
           return redirect(request.url)
        ref_file = request.files['file']
        # if user does not select file, browser also
        # submit a empty part without filename
        if ref_file.filename == '':
            flash('No selected file')
            return redirect(request.url)
        if ref_file and allowed_audio_file(ref_file.filename):
            filename1 = secure_filename(ref_file.filename)
            ref_file.save(os.path.join(UPLOAD_FOLDER, filename1))
            return redirect(url_for('uploaded_reference_file',
                                    filename1=filename1))  


    return  render_template('reference.html', filename1=filename1)


@app.route('/uploads/<filename1>')
def uploaded_reference_file(filename1):
    return send_from_directory(app.config['UPLOAD_FOLDER'],
                               filename1)

以下是完整错误：

  File "C:\Python\Python36\lib\site-packages\flask\app.py", line 1997, in __call__
return self.wsgi_app(environ, start_response)
  File "C:\Python\Python36\lib\site-packages\flask\app.py", line 1985, in wsgi_app
  response = self.handle_exception(e)
  File "C:\Python\Python36\lib\site-packages\flask\app.py", line 1540, in handle_exception
reraise(exc_type, exc_value, tb)
  File "C:\Python\Python36\lib\site-packages\flask\_compat.py", line 33, in reraise
raise value
  File "C:\Python\Python36\lib\site-packages\flask\app.py", line 1982, in wsgi_app
response = self.full_dispatch_request()
  File "C:\Python\Python36\lib\site-packages\flask\app.py", line 1614, in full_dispatch_request
rv = self.handle_user_exception(e)
  File "C:\Python\Python36\lib\site-packages\flask\app.py", line 1517, in handle_user_exception
reraise(exc_type, exc_value, tb)
  File "C:\Python\Python36\lib\site-packages\flask\_compat.py", line 33, in reraise
raise value
  File "C:\Python\Python36\lib\site-packages\flask\app.py", line 1612, in full_dispatch_request
rv = self.dispatch_request()
  File "C:\Python\Python36\lib\site-packages\flask\app.py", line 1598, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
  File "C:\Users\Jesse\eclipse-workspace\WER\src\Word_error_rate\uploads.py", line 55, in upload_reference_file
return  render_template('reference.html', filename1=filename1)
UnboundLocalError: local variable 'filename1' referenced before assignment

访问烧瓶应用

0 个答案: