Question

我是一名结构工程师，我正在尝试使用脚本自动创建3D模型。

到目前为止，我已经创建了三个模块; GUI模块使用PyQt4，一个控制GUI信号的主模块，以及一个“应该”从主模块中提取变量并生成可由我的分析程序读取的脚本的导出模块。

到目前为止，我无法在GUI中单击导出菜单时从主模块中提取变量，因为未定义变量名称。

如果我将主模块导入导出模块以获取变量，我会收到Ui_MainWindow的错误。

我试图简化下面的工作。

main.py模块

import sys
from PyQt4 import QtGui, QtCore
from gui import Ui_MainWindow
from export import newFile

class Main(QtGui.QMainWindow):

    def __init__(self):
    super(Main, self).__init__()
    self.ui = Ui_MainWindow()
    self.ui.setupUi(self)


    self.setName()

    self.ui.actionExport.triggered.connect(self.exportName)

def exportName(self):
    self.exportStaad = newFile().createNewFile()

def setName(self):
    self.ui.tbo_Name.textChanged.connect(self.name_Changed)

def name_Changed(self):
    someName = self.ui.tbo_Name.text()
    print('Name = ' + someName)


app = QtGui.QApplication(sys.argv)
form = Main()
form.show()
app.exec_()

gui.py

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'gui.ui'
#
# Created by: PyQt4 UI code generator 4.11.4
#
# WARNING! All changes made in this file will be lost!

from PyQt4 import QtCore, QtGui

try:
    _fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
    def _fromUtf8(s):
        return s

try:
    _encoding = QtGui.QApplication.UnicodeUTF8
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig)

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName(_fromUtf8("MainWindow"))
        MainWindow.resize(800, 600)
        self.centralwidget = QtGui.QWidget(MainWindow)
        self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
        self.tbo_Name = QtGui.QLineEdit(self.centralwidget)
        self.tbo_Name.setGeometry(QtCore.QRect(80, 60, 150, 20))
        self.tbo_Name.setObjectName(_fromUtf8("tbo_Name"))
        self.lab_Name = QtGui.QLabel(self.centralwidget)
        self.lab_Name.setGeometry(QtCore.QRect(30, 60, 40, 20))
        self.lab_Name.setObjectName(_fromUtf8("lab_Name"))
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtGui.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 21))
        self.menubar.setObjectName(_fromUtf8("menubar"))
        self.menuFile = QtGui.QMenu(self.menubar)
        self.menuFile.setObjectName(_fromUtf8("menuFile"))
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtGui.QStatusBar(MainWindow)
        self.statusbar.setObjectName(_fromUtf8("statusbar"))
        MainWindow.setStatusBar(self.statusbar)
        self.actionExport = QtGui.QAction(MainWindow)
        self.actionExport.setObjectName(_fromUtf8("actionExport"))
        self.menuFile.addAction(self.actionExport)
        self.menubar.addAction(self.menuFile.menuAction())

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow", None))
        self.lab_Name.setText(_translate("MainWindow", "Name:", None))
        self.menuFile.setTitle(_translate("MainWindow", "File", None))
        self.actionExport.setText(_translate("MainWindow", "Export", None))


if __name__ == "__main__":
    import sys
    app = QtGui.QApplication(sys.argv)
    MainWindow = QtGui.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

export.py

import sys
from PyQt4 import QtGui, QtCore
from os import path
import math

class newFile():
    def createNewFile(dest):
        '''
        Creates file
        '''

        name = QtGui.QFileDialog.getSaveFileName ()

        f = open(name, 'w')
        f.write('Hello' + someName)


        f.close

Answer 1

类newFile中名为createNewFile（dest）的方法在 f.write（＆＃39; Hello＆＃39; + someName）中使用未定义的var someName。这会导致错误，因为它没有在类中定义。在使用变量之前定义变量。

如何从Python中的主模块中获取变量？

1 个答案: