在try / except语句中使用Continue

时间:2018-07-13 21:13:16

标签: python pandas try-catch continue

我正在处理Pandas数据框,并遍历各行以查找相关数据,在这种情况下为颜色。在大多数情况下,“颜色”列的单元格将被填写,在这种情况下,我不需要在该行中的其他单元格中搜索颜色,可以继续到下一行。但是,如果不存在“颜色”列,则Pandas将引发KeyError,我将需要创建该列并为其添加值。这是我的代码段:

class Reader(object):

    def __init__(self, dataframe):
        """Grabs column headers, converts dataframe from unicode string objects to 
        Python string objects, sets dataValues class variable equal to a numpy array of the sheet"""
        self.headers = dataframe.columns.values
        self.dataFrame = dataframe.applymap(str)
        self.dataValues = self.dataFrame[:].values


class Extractor(object):
"""Extracts relevant spec information from a sku (row)"""

    def getColor(self, colorRef):
        """Looks in Model Name and Description for color information. 
        Uses pre-existing color database (colorRef).
        Returns dataFrame column 'Color' """
        index = 0
        newColorArray = [] #this will not be returned, its sole purpose is to keep track of colors
        for sku in myData.dataValues:
            try:
                if myData.dataFrame.iloc[index, myData.dataFrame.columns.get_loc('Color') != ('' or ' '):
                    continue #color exists, move to next row
            except KeyError:
                newColorArray = ['']*myData.dataFrame.shape[0]
            #Remaining code searches for colors

当我尝试执行该代码块时,我得到了SyntaxError。我已经阅读了e-satis的comment,但是,如果我正确理解了yield,这将终止函数,而不是循环的此迭代。我试图用Python进行的操作甚至有可能吗?

我没有太多使用对象和类的练习,所以如果您也想在这里给我反馈,请

0 个答案:

没有答案