Question

错误：self.START.clicked.connect（self.StartClicked）

AttributeError：“代码”对象没有属性“ StartClicked”

这是我的代码。我不知道这段代码在哪里错了，请您检查一下并纠正我哪里错了。

当我尝试在不使用GUI的情况下运行代码时，它可以正常工作，但是在使用QT时，它给了我这个错误。

import sys
import cv2
import datetime

from PyQt5.QtWidgets import QApplication ,QDialog
from PyQt5.uic import loadUi
from PyQt5.QtGui import QImage,QPixmap
from PyQt5.QtCore import pyqtSlot


class code(QDialog):
   def __init__(self):
        super(code,self).__init__()
        loadUi('letst.ui',self)
        self.logic =0

        self.START.clicked.connect(self.StartClicked)
        self.STOP.clicked.connect(self.StopClicked)
@pyqtSlot()
def StartClicked(self):

        self.logic=1
        fourcc = cv2.VideoWriter_fourcc(*'XVID')
        date=datetime.datetime.now()
        cap = cv2.VideoCapture(1)
        out= cv2.VideoWriter('E:/project/videos/rec_%s%s%s%s%s%s.mp4' %(date.year,date.month,date.day,date.hour,date.minute,date.second),fourcc,20.0,(640,480))


        while (cap.isOpened()):

                ret,frame = cap.read()
                if ret == True:
                        self.displayImage(frame,1)
                        cv2.waitKey()

                        if  (self.logic==1):
                                out.write(frame)
                        if (self.logic==0):
                                break
                else:
                    print('return not found')
                cap.release()
                out.release()
                cv2.destroyAllWindows()

def StopClicked(self):
    self.logic=0
def displayImage(self, img,window=1):
    qformat = QImage.Format_Indexed8

    if len(img.shape)==3:
        if (img.shape[2])==4:
            qformat=QImage.Format_RGBA888

        else:
            qformat=QImage.Format_RGB888
    img =QImage(img, img.shape[1],img.shape[0],qformat)
    img =img.rgbSwapped()
    self.imglabel.setPixmap(QPixmap.fromImage(img))
    self.imgLabel.setAlignment(QtCore.Qt.AlignHCenter | Qtcore.Qt.AlignVCenter)

app=QApplication(sys.argv)
Window = code()
Window.show()
try:
    sys.exit(app.exec_())
except:
    print("exiting")

这是ui文件：

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>Dialog</class>
 <widget class="QDialog" name="Dialog">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>780</width>
    <height>555</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>Dialog</string>
  </property>
  <widget class="QLabel" name="imgLabel">
   <property name="geometry">
    <rect>
     <x>30</x>
     <y>30</y>
     <width>711</width>
     <height>421</height>
    </rect>
   </property>
   <property name="frameShape">
    <enum>QFrame::WinPanel</enum>
   </property>
   <property name="frameShadow">
    <enum>QFrame::Plain</enum>
   </property>
   <property name="text">
    <string/>
   </property>
  </widget>
  <widget class="QPushButton" name="START">
   <property name="geometry">
    <rect>
     <x>40</x>
     <y>490</y>
     <width>101</width>
     <height>51</height>
    </rect>
   </property>
   <property name="font">
    <font>
     <pointsize>16</pointsize>
    </font>
   </property>
   <property name="text">
    <string>start</string>
   </property>
  </widget>
  <widget class="QPushButton" name="STOP">
   <property name="geometry">
    <rect>
     <x>180</x>
     <y>490</y>
     <width>101</width>
     <height>51</height>
    </rect>
   </property>
   <property name="font">
    <font>
     <pointsize>16</pointsize>
    </font>
   </property>
   <property name="text">
    <string>stop</string>
   </property>
  </widget>
 </widget>
 <resources/>
 <connections/>
</ui>

Answer 1

以下函数应在类内部：

def StartClicked(self):
def StopClicked(self):
def displayImage

请更正缩进并尝试。

如何解决此错误“对象无属性”

1 个答案: