Python werkzeug 模块，FileStorage() 实例源码

def convert_document():
    if (request.files.get('document')):
        document=Document(request.files.get('document'))
    elif (not request.files.get('document') and
        request.form.get('document')):
        document=Document(FileStorage(
            StringIO(request.form.get('document')),
            '{name}.{extension}'.format(
                name=random_string(),
                extension=request.form.get('from'))
        ))

    mime_type=document.convert(request.form.get('from'), request.form.get('to'))

    @after_this_request
    def delete_document_files(response):
        document.delete_files()
        return response

    return send_from_directory(
        document.converted_file_directory,
        document.converted_file_name,
        mimetype=mime_type)

def post(self):
        file_ = parse_arg_from_requests(arg='image', type=werkzeug.FileStorage, location='files')
        if not file_:
            abort(400, "Required form-data param 'image' type=ImageFile")
        _setup()  # Loads model and weights - takes ~2 seconds
        file_descriptor, filename = tempfile.mkstemp(suffix='.jpg')
        logging.info('Saving file: %s', filename)
        file_.save(filename)
        text_in_image = read_image_and_delete(filename)
        return jsonify(status='success',
                       text_in_image=text_in_image.split('\n'),
                       version='0.0.1',
                       )

def post(self):
        parser = reqparse.RequestParser()
        parser.add_argument("problemID", type=str, required=True, location="json")
        parser.add_argument("userID", type=str, required=True, location="json")
        parser.add_argument("file", type=FileStorage, required=True, location="files")
        entry = parser.parse_args()

        try:
            if db.problem.find_one({"_id": ObjectId(entry['problemID'])}) == None:
                abort(400)
            if db.user.find_one({"_id": entry['userID']}) == None:
                abort(400)
        except:
            abort(400)

        problemName =  db.problem.find_one({"_id": ObjectId(entry['problemID'])})['name']
        gradingFilePath = os.path.join(os.path.join(PROBLEMS_DIR, problemName.lower()), GRADING_SCRIPT)
        command = "python3 "+gradingFilePath+" \""+entry["file"].stream+"\""
        gradingOutput = subprocess.Popen(shlex.split(command.replace('\\','/')), stdout=subprocess.PIPE).communicate()[0]
        structuredGradingOutput = json.loads(gradingOutput)

        status_code = None
        if "score" in structuredGradingOutput:
            entry["score"] = structuredGradingOutput["score"]
            entry.pop("file")
            db.entry.insert_one(entry)
            status_code = 201
        else:
            status_code = 400

        return jsonify(structuredGradingOutput, status=status_code)

def has_file(self):
        '''Return True iff self.data is a FileStorage with file data'''
        if not isinstance(self.data, FileStorage):
            return False
        # filename == None => the field was present but no file was entered
        # filename == '<fdopen>' is for a werkzeug hack:
        #   large file uploads will get stored in a temporary file on disk and
        #   show up as an extra FileStorage with name '<fdopen>'
        return self.data.filename not in [None, '', '<fdopen>']

def has_file(self):
        '''Return True iff self.data is a FileStorage with file data'''
        if not isinstance(self.data, FileStorage):
            return False
        # filename == None => the field was present but no file was entered
        # filename == '<fdopen>' is for a werkzeug hack:
        #   large file uploads will get stored in a temporary file on disk and
        #   show up as an extra FileStorage with name '<fdopen>'
        return self.data.filename not in [None, '', '<fdopen>']

def has_file(self):
        '''Return True iff self.data is a FileStorage with file data'''
        if not isinstance(self.data, FileStorage):
            return False
        # filename == None => the field was present but no file was entered
        # filename == '<fdopen>' is for a werkzeug hack:
        #   large file uploads will get stored in a temporary file on disk and
        #   show up as an extra FileStorage with name '<fdopen>'
        return self.data.filename not in [None, '', '<fdopen>']

def has_file(self):
        '''Return True iff self.data is a FileStorage with file data'''
        if not isinstance(self.data, FileStorage):
            return False
        # filename == None => the field was present but no file was entered
        # filename == '<fdopen>' is for a werkzeug hack:
        #   large file uploads will get stored in a temporary file on disk and
        #   show up as an extra FileStorage with name '<fdopen>'
        return self.data.filename not in [None, '', '<fdopen>']

def has_file(self):
        '''Return True iff self.data is a FileStorage with file data'''
        if not isinstance(self.data, FileStorage):
            return False
        # filename == None => the field was present but no file was entered
        # filename == '<fdopen>' is for a werkzeug hack:
        #   large file uploads will get stored in a temporary file on disk and
        #   show up as an extra FileStorage with name '<fdopen>'
        return self.data.filename not in [None, '', '<fdopen>']

def has_file(self):
        '''Return True iff self.data is a FileStorage with file data'''
        if not isinstance(self.data, FileStorage):
            return False
        # filename == None => the field was present but no file was entered
        # filename == '<fdopen>' is for a werkzeug hack:
        #   large file uploads will get stored in a temporary file on disk and
        #   show up as an extra FileStorage with name '<fdopen>'
        return self.data.filename not in [None, '', '<fdopen>']

def has_file(self):
        '''Return True iff self.data is a FileStorage with file data'''
        if not isinstance(self.data, FileStorage):
            return False
        # filename == None => the field was present but no file was entered
        # filename == '<fdopen>' is for a werkzeug hack:
        #   large file uploads will get stored in a temporary file on disk and
        #   show up as an extra FileStorage with name '<fdopen>'
        return self.data.filename not in [None, '', '<fdopen>']

def has_file(self):
        '''Return True iff self.data is a FileStorage with file data'''
        if not isinstance(self.data, FileStorage):
            return False
        # filename == None => the field was present but no file was entered
        # filename == '<fdopen>' is for a werkzeug hack:
        #   large file uploads will get stored in a temporary file on disk and
        #   show up as an extra FileStorage with name '<fdopen>'
        return self.data.filename not in [None, '', '<fdopen>']

def has_file(self):
        '''Return True iff self.data is a FileStorage with file data'''
        if not isinstance(self.data, FileStorage):
            return False
        # filename == None => the field was present but no file was entered
        # filename == '<fdopen>' is for a werkzeug hack:
        #   large file uploads will get stored in a temporary file on disk and
        #   show up as an extra FileStorage with name '<fdopen>'
        return self.data.filename not in [None, '', '<fdopen>']

def has_file(self):
        '''Return True iff self.data is a FileStorage with file data'''
        if not isinstance(self.data, FileStorage):
            return False
        # filename == None => the field was present but no file was entered
        # filename == '<fdopen>' is for a werkzeug hack:
        #   large file uploads will get stored in a temporary file on disk and
        #   show up as an extra FileStorage with name '<fdopen>'
        return self.data.filename not in [None, '', '<fdopen>']

def has_file(self):
        '''Return True iff self.data is a FileStorage with file data'''
        if not isinstance(self.data, FileStorage):
            return False
        # filename == None => the field was present but no file was entered
        # filename == '<fdopen>' is for a werkzeug hack:
        #   large file uploads will get stored in a temporary file on disk and
        #   show up as an extra FileStorage with name '<fdopen>'
        return self.data.filename not in [None, '', '<fdopen>']

def has_file(self):
        '''Return True iff self.data is a FileStorage with file data'''
        if not isinstance(self.data, FileStorage):
            return False
        # filename == None => the field was present but no file was entered
        # filename == '<fdopen>' is for a werkzeug hack:
        #   large file uploads will get stored in a temporary file on disk and
        #   show up as an extra FileStorage with name '<fdopen>'
        return self.data.filename not in [None, '', '<fdopen>']

def has_file(self):
        '''Return True iff self.data is a FileStorage with file data'''
        if not isinstance(self.data, FileStorage):
            return False
        # filename == None => the field was present but no file was entered
        # filename == '<fdopen>' is for a werkzeug hack:
        #   large file uploads will get stored in a temporary file on disk and
        #   show up as an extra FileStorage with name '<fdopen>'
        return self.data.filename not in [None, '', '<fdopen>']