Qt Python GUI在单击时崩溃

Question

您好，我正在尝试从youtube视频中复制代码的副本，但是代码崩溃并且python停止了clickfunction的工作。

on_clickSendEmail，on_clickTestEmail和sendTestEmail基本不起作用python崩溃可以由任何人来帮助@ekhumoro

以下是引用代码：

import sys
from PyQt5.QtCore import pyqtSlot
from PyQt5.QtWidgets import QApplication,QMainWindow
from PyQt5.uic import loadUi

import boto3
from botocore.exceptions import ClientError

class tutorial(QMainWindow):

    def __init__(self):
        super(tutorial, self).__init__()
        loadUi('pelican.ui',self)
        self.setWindowTitle('Test Environment')
        self.subject.setPlainText('This is a Test email')
        self.textEdit.setPlainText('Hi All')
        self.totalemail.setText('9887')
        self.totalavailableemail.setText('10000')

        self.testemailsend.clicked.connect(self.on_clickTestEmail)
        self.sendemail.clicked.connect(self.on_clickSendEmail)
    @pyqtSlot()

    def on_clickTestEmail(self):
        print('User has pressed the Email test Push Button')
        subject = self.subject.toPlainText()
        message = self.textEdit.toPlainText()
        fromEmail = self.fromemail.currentText()
        toEmail = self.testemailedit.toPlainText()
        sendTestEmail(fromEmail,subject,message,toEmail)

    @pyqtSlot()

    def on_clickSendEmail(self):
        print('User has pressed the Email send Push Button')
        sendEmailCheck = self.checkBox.isChecked()
        if sendEmailCheck:
            self.checkBoxAlert.clear()
            print('Now You can send your emails')
        else:
            print('Please,First Check Your test email')
            self.checkBoxAlert.setPlainText('Please,First Check Your test email')

def sendTestEmail(fromEmail,subject,message,toEmail):
    print('From:',fromEmail)
    print('To:',toEmail)
    print('Subject:',subject)
    print('Message:',message)

def send(fromEmail,subject,message,toEmail):

    SENDER = fromEmail

    # Replace recipient@example.com with a "To" address. If your account
    # is still in the sandbox, this address must be verified.
    RECIPIENT = toEmail

    # Specify a configuration set. If you do not want to use a configuration
    # set, comment the following variable, and the
    # ConfigurationSetName=CONFIGURATION_SET argument below.
    CONFIGURATION_SET = "pelican.ui"

    # If necessary, replace us-west-2 with the AWS Region you're using for Amazon SES.


    # The subject line for the email.
    SUBJECT = subject

    # The email body for recipients with non-HTML email clients.
    BODY_TEXT = message

    # The HTML body of the email.
    BODY_HTML = message

    # The character encoding for the email.
    CHARSET = "UTF-8"

    # Create a new SES resource and specify a region.
    client = boto3.client('ses')

    # Try to send the email.
    try:
        # Provide the contents of the email.
        response = client.send_email(
            Destination={
                'ToAddresses': [
                    RECIPIENT,
                ],
            },
            Message={
                'Body': {
                    'Html': {
                        'Charset': CHARSET,
                        'Data': BODY_HTML,
                    },
                    'Text': {
                        'Charset': CHARSET,
                        'Data': BODY_TEXT,
                    },
                },
                'Subject': {
                    'Charset': CHARSET,
                    'Data': SUBJECT,
                },
            },
            Source=SENDER,
            # If you are not using a configuration set, comment or delete the
            # following line
            ConfigurationSetName=CONFIGURATION_SET,
        )
    # Display an error if something goes wrong.
    except ClientError as e:
        print(e.response['Error']['Message'])
    else:
        print("Email sent! Message ID:"),
        print(response['MessageId'])

app = QApplication(sys.argv)
widget = tutorial()
widget.show()
sys.exit(app.exec_())