Question

我有一个这样的课程（按比例缩小）

class FileAndWriter(object):
    def __init__(self, symbol, start_dt_str):
        self.data = []

        self.fileName = symbol.replace("/", "") + '-' + start_dt_str + '.csv'
        self.file =  open(self.fileName, 'ab')
        self.csvWiter = csv.writer(self.file, delimiter=',') # , quoting=csv. QUOTE_ALL

    def write_rows(self):
        self.csvWiter.writerows(self.data)
        self.file.flush()

    def appendData(dataMsg):       
        try:
            self.data.append(dataMsg)

            if len(self.data) > 100:
                self.write_rows(self.data)
                self.data = []
        except:
            print "appendData error:", sys.exc_info()[0]

我有另一个类就像这样组成了这个类。 update是Observer的回调函数：

class SymbolWriter(Observer):
    def __init__(self, symbol, sd, ed):

        self.writers = {}
        self.symbol = symbol
        self.start_date = sd
        self.end_date = ed

        for single_date in daterange(self.start_date, self.end_date):
            single_date_str = single_date.strftime('%Y%m%d')
            faw = FileAndWriter(self.symbol, single_date_str)
            print 'FAW ', single_date_str
            self.writers[single_date_str] = faw

    def update(self, dataMsg):
        try:
            today = datetime.datetime.utcnow()
            today_str = today.strftime('%Y%m%d')
            print today_str
            if today_str in self.writers:
                #print 'Writting'
                faw = self.writers[today_str]
                if faw is not None:
                    faw.appendData(dataMsg)
        except:
            print "update error:", sys.exc_info()[0]

faw = self.writers[today_str] update error: <type 'exceptions.TypeError'>

除外

如何在字典中存储对象并调用成员函数？或者还有其他我没有注意到的东西？

存储类的对象然后调用该对象中的函数

0 个答案: