attributeError：＆＃x27; dataframe＆＃x27;对象没有属性＆＃x27;作者＆＃x27;

Question

该程序是通过单击并拖动图像绘制边界框，并打印边界框坐标，然后我收到此错误。 attributeError：'dataframe'对象没有属性'writer'

    import cv2
    import csv
    
    class BoundingBoxWidget(object):
        def __init__(self):
            self.original_image = cv2.imread('data/colorpic3.jpg')
            self.clone = self.original_image.copy()
    
            cv2.namedWindow('image')
            cv2.setMouseCallback('image', self.extract_coordinates)
    
            # Bounding box reference points
            self.image_coordinates = []
    
        def extract_coordinates(self, event, x, y, flags, parameters):
            # Record starting (x,y) coordinates on left mouse button click
            if event == cv2.EVENT_LBUTTONDOWN:
                self.image_coordinates = [(x,y)]
    
            # Record ending (x,y) coordintes on left mouse button release
            elif event == cv2.EVENT_LBUTTONUP:
                self.image_coordinates.append((x,y))
              
           with open('results.csv', 'w') as csvfile:
                 writer= csv.writer(csvfile)

                 writer.writerow(['top left: {}, bottom right: {}'.format(self.image_coordinates[0], self.image_coordinates[1])])
                 writer.writerow(['x,y,w,h : ({}, {}, {}, {})'.format(self.image_coordinates[0][0], self.image_coordinates[0][1], self.image_coordinates[1][0] - self.image_coordinates[0][0], self.image_coordinates[1][1] - self.image_coordinates[0][1])])     
                
                # Draw rectangle 
                cv2.rectangle(self.clone, self.image_coordinates[0], self.image_coordinates[1], (0,255,0), 2)
                cv2.imshow("image", self.clone) 
    
            # Clear drawing boxes on right mouse button click
            elif event == cv2.EVENT_RBUTTONDOWN:
                self.clone = self.original_image.copy()
    
    
    
    
                
    
        def show_image(self):
            return self.clone
    
    if __name__ == '__main__':
        boundingbox_widget = BoundingBoxWidget()
        while True:
            cv2.imshow('image', boundingbox_widget.show_image())
            key = cv2.waitKey(1)
    
            # Close program with keyboard 'q'
            if key == ord('q'):
                cv2.destroyAllWindows()
                exit(1)

我试图将边界框坐标直接存储到CSV文件并获取此错误。INTENT STEAD我使用CSV Writer来存储这些值。

Answer 1

您实际上并没有向我们展示导致错误的零件，但我可以猜测您做了什么。

您有一个导入的CSV，您没有向我们展示，但是您也会导入大熊猫，在某个时候您确实这样做：

csv = pd.read_csv(...)

擦除导入的模块，并绑定名称csv到您的数据框。因此，当您使用csv模块时，它不存在。

为您的csv dataframe使用其他名称，一切都会很好。