El código de escritura / cierre de la ventana emergente deja de funcionar cuando se agrega una ventana de llamada, ¿por qué? [duplicar

Question

Dec 20, 2018, 05:04 PM

El código de escritura / cierre de la ventana emergente deja de funcionar cuando se agrega una ventana de llamada, ¿por qué? [duplicar

Esta pregunta ya tiene una respuesta aquí:

¿Descripción breve de las reglas de alcance? 7 respuestas ¿Por qué las variables globales son malas? 4 respuestas

El primer programa de muestra funciona bien. El programa abre un NumPad cuando el usuario hace clic en una de las celdas QLineEdit ordenadas y cuando el usuario, usando el mouse, selecciona el número y presiona "Enter", el número se coloca en la celda QLineEdit seleccionada y NumPad se cierra. Sin embargo, cuando se agrega una pantalla de llamada en el segundo programa para abrir la pantalla "ss", las líneas "ss.lVal [(..." y "ss.numpad.close ()" dejan de funcionar.

Código de muestra de trabajo:

#!/usr/bin/env python

import sys
from pprint import pprint
from PyQt5.QtCore import pyqtSlot
from PyQt5.QtCore import *
from PyQt5.QtWidgets import QApplication
from PyQt5.QtWidgets import QLineEdit
from PyQt5.QtWidgets import QPushButton
from PyQt5.QtWidgets import QVBoxLayout
from PyQt5.QtWidgets import QMainWindow
from PyQt5.QtWidgets import QWidget
from PyQt5.QtWidgets import QGridLayout
from PyQt5.QtWidgets import QMessageBox
from PyQt5.QtCore import pyqtSlot
from PyQt5.QtCore import pyqtSignal
from PyQt5 import QtCore, QtGui, QtWidgets

# Global variables
# Data Select - 3=3 Data Rows,4=4 Data Rows,5=5 DataRows
gvDataSel = 3
gvPickX = 0
gvPickY = 0

class extQLineEdit(QLineEdit):
    clicked=pyqtSignal()
    def __init__(self,parent):
        QLineEdit.__init__(self,parent)
    def mousePressEvent(self,QMouseEvent):
        self.clicked.emit()


class wdScoreSheet(QWidget):
    def __init__(self):
        super(wdScoreSheet, self).__init__()

        global gvDataSel

        self.resize(400, 300)

        self.numpad = NumPad(self)

        # Value array
        self.lVal = {}
        for i in range(gvDataSel):
            for j in range(2):
                k = 0
                self.lVal[i,j] = extQLineEdit(self)
                self.lVal[i,j].setGeometry(QtCore.QRect(((j*140)+10),((i*34)+50), 50, 28))
                self.lVal[i,j].clicked.connect(lambda i=i, j=j: self.show_NumPad(i,j))


    def show_NumPad(self, parm1, parm2):
        global gvPickX
        global gvPickY
        gvPickX = parm1
        gvPickY = parm2
        self.numpad.show()

    def close(self):
        self.numpad.close()
        super(wdScoreSheet, self).close()


class NumPad(QWidget):
    def __init__(self, parm1):
        super(NumPad, self).__init__()

        grid_layout = QGridLayout()
        self.setLayout(grid_layout)
        values = [
            '1', '2', '3',
            '4', '5', '6',
            '7', '8', '9',
            '-', '0', 'Enter'
        ]
        positions = [(i, j) for i in range(1,5) for j in range(3)]
        # position is an array of tuples
        for position, value in zip(positions, values):
            if value == '':
                continue
            button = QPushButton(value)
            grid_layout.addWidget(button, *position)
            button.clicked.connect(self.btnclick)

        self.setWindowTitle('Num Pad')

        verticalLayout = QVBoxLayout()
        self.lineEdit = QLineEdit()
        verticalLayout.addWidget(self.lineEdit)
        grid_layout.addLayout(verticalLayout, 0, 0, 1, 3)



    def btnclick(self):
        sender = self.sender()
        #pprint("You Pressed: " + sender.text())
        if sender.text() in ['0','1','2','3','4','5','6','7','8','9']:
            self.lineEdit.setText(self.lineEdit.text() + sender.text())

        if sender.text() in ['-']:
            if self.lineEdit.text()[:1] in ['-']:
                self.lineEdit.setText(self.lineEdit.text()[-(len(self.lineEdit.text())-1):])
            else:
                self.lineEdit.setText(sender.text() + self.lineEdit.text())

        if sender.text() in ["Enter"]:
            if self.lineEdit.text() not in [""]:
                ss.lVal[(gvPickX, gvPickY)].setText(self.lineEdit.text())
            self.lineEdit.clear()
            ss.numpad.close()



if __name__ == "__main__":
    app = QApplication(sys.argv)
    ss = wdScoreSheet()
    ss.show()
    sys.exit(app.exec_())

Same Code con MainWindow agregado que no funciona:

#!/usr/bin/env python

import sys
from pprint import pprint
from PyQt5.QtCore import pyqtSlot
from PyQt5.QtCore import *
from PyQt5.QtWidgets import QApplication
from PyQt5.QtWidgets import QLineEdit
from PyQt5.QtWidgets import QPushButton
from PyQt5.QtWidgets import QVBoxLayout
from PyQt5.QtWidgets import QMainWindow
from PyQt5.QtWidgets import QWidget
from PyQt5.QtWidgets import QGridLayout
from PyQt5.QtWidgets import QMessageBox
from PyQt5.QtCore import pyqtSlot
from PyQt5.QtCore import pyqtSignal
from PyQt5 import QtCore, QtGui, QtWidgets

# Global variables
# Data Select - 3=3 Data Rows,4=4 Data Rows,5=5 DataRows
gvDataSel = 3
gvPickX = 0
gvPickY = 0

class extQLineEdit(QLineEdit):
    clicked=pyqtSignal()
    def __init__(self,parent):
        QLineEdit.__init__(self,parent)
    def mousePressEvent(self,QMouseEvent):
        self.clicked.emit()


class wdScoreSheet(QWidget):
    def __init__(self):
        super(wdScoreSheet, self).__init__()

        global gvDataSel

        self.resize(400, 300)

        self.numpad = NumPad(self)

        # Value array
        self.lVal = {}
        for i in range(gvDataSel):
            for j in range(2):
                k = 0
                self.lVal[i,j] = extQLineEdit(self)
                self.lVal[i,j].setGeometry(QtCore.QRect(((j*140)+10),((i*34)+50), 50, 28))
                self.lVal[i,j].clicked.connect(lambda i=i, j=j: self.show_NumPad(i,j))


    def show_NumPad(self, parm1, parm2):
        global gvPickX
        global gvPickY
        gvPickX = parm1
        gvPickY = parm2
        self.numpad.show()

    def close(self):
        self.numpad.close()
        super(wdScoreSheet, self).close()


class NumPad(QWidget):
    def __init__(self, parm1):
        super(NumPad, self).__init__()

        grid_layout = QGridLayout()
        self.setLayout(grid_layout)
        values = [
            '1', '2', '3',
            '4', '5', '6',
            '7', '8', '9',
            '-', '0', 'Enter'
        ]
        positions = [(i, j) for i in range(1,5) for j in range(3)]
        # position is an array of tuples
        for position, value in zip(positions, values):
            if value == '':
                continue
            button = QPushButton(value)
            grid_layout.addWidget(button, *position)
            button.clicked.connect(self.btnclick)

        self.setWindowTitle('Num Pad')

        verticalLayout = QVBoxLayout()
        self.lineEdit = QLineEdit()
        verticalLayout.addWidget(self.lineEdit)
        grid_layout.addLayout(verticalLayout, 0, 0, 1, 3)



    def btnclick(self):
        sender = self.sender()
        #pprint("You Pressed: " + sender.text())
        if sender.text() in ['0','1','2','3','4','5','6','7','8','9']:
            self.lineEdit.setText(self.lineEdit.text() + sender.text())

        if sender.text() in ['-']:
            if self.lineEdit.text()[:1] in ['-']:
                self.lineEdit.setText(self.lineEdit.text()[-(len(self.lineEdit.text())-1):])
            else:
                self.lineEdit.setText(sender.text() + self.lineEdit.text())

        if sender.text() in ["Enter"]:
            if self.lineEdit.text() not in [""]:
                ss.lVal[(gvPickX, gvPickY)].setText(self.lineEdit.text())
            self.lineEdit.clear()
            ss.numpad.close()

class wdMainWindow(QMainWindow):
    def __init__(self):
        super(wdMainWindow, self).__init__()
        self.resize(400, 300)

        self.pbSHR = QPushButton(self)
        self.pbSHR.setText("Open Data Screen")
        self.pbSHR.setGeometry(QtCore.QRect(20, 20, 200, 30))
        self.pbSHR.clicked.connect(self.pbSHR_clicked)

    def pbSHR_clicked(self):
        global gvDataSel
        gvDataSel = 4
        ss = wdScoreSheet()
        ss.show()


if __name__ == "__main__":
    app = QApplication(sys.argv)
    mw = wdMainWindow()
    mw.show()
    sys.exit(app.exec_())

Adding MainWindow para llamar a ss (instancia abierta de wdScoreSheet) hace que "ss.lVal [(..." y "ss.numpad.close ()" ahora fallen, ¿por qué? ¿Qué hay que cambiar para que NumPad funcione como el primero? programa? Gracias de antemano por su ayuda.