AuthDialog.py 실행 -> 창 안보임

import sys

from PyQt5.QtWidgets import *

class AuthDialog(QDialog):

    def __init__(self):

        super().__init__()

        self.setupUI()

    def setupUI(self):

        self.setGeometry(300, 1800, 300, 100)

        self.setWindowTitle("Sign In")

        self.setFixedSize(300, 100)

        label1 = QLabel("ID:")

        label2 = QLabel("Password:")

        self.lineEdit1 = QLineEdit()

        self.lineEdit2 = QLineEdit()

        self.pushButton = QPushButton("로그인")

        layout = QGridLayout()

        layout.addWidget(label1, 0, 0)

        layout.addWidget(self.lineEdit1, 0, 1)

        layout.addWidget(self.pushButton, 0, 2)

        layout.addWidget(label2, 1, 0)

        layout.addWidget(self.lineEdit2, 1, 1)

        self.setLayout(layout)

if __name__ == "__main__":

    app = QApplication(sys.argv)

    loginDialog = AuthDialog()

    loginDialog.show()

    app.exec_()

코드 이상없고

실행시키면 작업표시창에도 저렇게 뜨지만

화면이 안뜹니다

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