[英]Python NameError: global name 'Form' is not defined pyqt
我正在嘗試設計Garage App。 該應用程序有兩個選項(登錄,注冊),當用戶選擇登錄時,此小組件稱為“歡迎窗口”。
程序應關閉“歡迎窗口”並打開另一個名為“登錄”的小部件,然后“登錄”小部件具有兩個按鈕:“確定”和“返回”。 當用戶按下“返回”時,應關閉“登錄”小部件並重新打開“歡迎窗口”。 但是它打開“歡迎窗口”卻沒有關閉“登錄窗口”並引發錯誤
NameError:全局名稱“ Form”不是“ WelcomeWidget”的已定義代碼
from PyQt4 import QtCore, QtGui
import SignIN
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_Form(object):
def SignINF(self):
self.SignINWindow = QtGui.QWidget()
self.ui = SignIN.Ui_Form()
self.ui.setupUi(self.SignINWindow)
self.SignINWindow.show()
Form.close()
def setupUi(self, Form):
Form.setObjectName(_fromUtf8("Form"))
Form.resize(500, 360)
Form.setStyleSheet(_fromUtf8("background-image:
url(:/img/Screenshot from 2017-09-20 17-37-17.png);"))
self.pushButton_2 = QtGui.QPushButton(Form)
self.pushButton_2.setGeometry(QtCore.QRect(120, 290, 75, 31))
self.pushButton_2.setStyleSheet(_fromUtf8("color: rgb(255,
255, 255);\n"
"font: 63 oblique 12pt \"URW Gothic L\";"))
self.pushButton_2.setObjectName(_fromUtf8("pushButton_2"))
self.pushButton_2.clicked.connect(self.SignINF)
self.pushButton = QtGui.QPushButton(Form)
self.pushButton.setGeometry(QtCore.QRect(29, 291, 75, 31))
self.pushButton.setStyleSheet(_fromUtf8("color: rgb(255, 255,
255);\n"
"font: 63 oblique 12pt \"URW Gothic L\";"))
self.pushButton.setObjectName(_fromUtf8("pushButton"))
self.label = QtGui.QLabel(Form)
self.label.setGeometry(QtCore.QRect(30, 50, 458, 34))
font = QtGui.QFont()
font.setFamily(_fromUtf8("DejaVu Serif"))
font.setPointSize(22)
font.setBold(False)
font.setItalic(False)
font.setWeight(9)
self.label.setFont(font)
self.label.setStyleSheet(_fromUtf8("color: rgb(255, 255,
255);\n"
"font: 75 22pt \"DejaVu Serif\";\n"
""))
self.label.setObjectName(_fromUtf8("label"))
self.label_2 = QtGui.QLabel(Form)
self.label_2.setGeometry(QtCore.QRect(360, 330, 131, 20))
self.label_2.setStyleSheet(_fromUtf8("color: rgb(255, 255,
255);\n"
"font: 63 italic 10pt \"URW Chancery L\";"))
self.label_2.setObjectName(_fromUtf8("label_2"))
self.retranslateUi(Form)
QtCore.QMetaObject.connectSlotsByName(Form)
def retranslateUi(self, Form):
Form.setWindowTitle(_translate("Form", "Form", None))
self.pushButton_2.setText(_translate("Form", "Sign In", None))
self.pushButton.setText(_translate("Form", "Sign Up", None))
self.label.setText(_translate("Form", "Welcome To Our Smart
Garage", None))
self.label_2.setText(_translate("Form", "Power By AIET
Students", None))
import iamge_rc
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
Form = QtGui.QWidget()
ui = Ui_Form()
ui.setupUi(Form)
Form.show()
sys.exit(app.exec_())
“登錄小部件”的代碼
from PyQt4 import QtCore, QtGui
import WelFrame
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_Form(object):
def Back(self):
self.WelcomWindow = QtGui.QWidget()
self.ui = WelFrame.Ui_Form()
self.ui.setupUi(self.WelcomWindow)
self.WelcomWindow .show()
Form.close()
def setupUi(self, Form):
Form.setObjectName(_fromUtf8("Form"))
Form.resize(500, 360)
Form.setStyleSheet(_fromUtf8("background-image: url(:/img/Screenshot from 2017-09-20 17-37-17.png);"))
self.gridLayout = QtGui.QGridLayout(Form)
self.gridLayout.setObjectName(_fromUtf8("gridLayout"))
self.label = QtGui.QLabel(Form)
self.label.setStyleSheet(_fromUtf8("color: rgb(255, 255, 255);\n"
"font: 63 oblique 12pt \"URW Gothic L\";"))
self.label.setObjectName(_fromUtf8("label"))
self.gridLayout.addWidget(self.label, 0, 0, 1, 1)
self.lineEdit = QtGui.QLineEdit(Form)
self.lineEdit.setObjectName(_fromUtf8("lineEdit"))
self.gridLayout.addWidget(self.lineEdit, 0, 1, 1, 1)
self.lineEdit_2 = QtGui.QLineEdit(Form)
self.lineEdit_2.setObjectName(_fromUtf8("lineEdit_2"))
self.gridLayout.addWidget(self.lineEdit_2, 1, 1, 1, 1)
self.pushButton_2 = QtGui.QPushButton(Form)
self.pushButton_2.setStyleSheet(_fromUtf8("color: rgb(255, 255, 255);\n"
"font: 63 oblique 12pt \"URW Gothic L\";"))
self.pushButton_2.setObjectName(_fromUtf8("pushButton_2"))
self.pushButton_2.clicked.connect(self.Back)
self.gridLayout.addWidget(self.pushButton_2, 2, 0, 1, 1)
self.pushButton = QtGui.QPushButton(Form)
self.pushButton.setStyleSheet(_fromUtf8("color: rgb(255, 255, 255);\n"
"font: 63 oblique 12pt \"URW Gothic L\";"))
self.pushButton.setObjectName(_fromUtf8("pushButton"))
self.gridLayout.addWidget(self.pushButton, 2, 1, 1, 1)
self.label_2 = QtGui.QLabel(Form)
self.label_2.setStyleSheet(_fromUtf8("color: rgb(255, 255, 255);\n"
"font: 63 oblique 12pt \"URW Gothic L\";"))
self.label_2.setObjectName(_fromUtf8("label_2"))
self.gridLayout.addWidget(self.label_2, 1, 0, 1, 1)
self.retranslateUi(Form)
QtCore.QMetaObject.connectSlotsByName(Form)
def retranslateUi(self, Form):
Form.setWindowTitle(_translate("Form", "Form", None))
self.label.setText(_translate("Form", "Enter User Name", None))
self.pushButton_2.setText(_translate("Form", "Cancel", None))
self.pushButton.setText(_translate("Form", "OK", None))
self.label_2.setText(_translate("Form", "Enter Password", None))
import iamge_rc
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
Form = QtGui.QWidget()
ui = Ui_Form()
ui.setupUi(Form)
Form.show()
sys.exit(app.exec_())
導入登錄->登錄代碼
導入WelFrame->歡迎窗口代碼
我一直建議您不要修改Qt Designer創建的文件。 這些類是針對設計的,因此最優雅的方法是創建一個實現邏輯並使用先前設計的類,這些類必須具有以下結構:
class LogicClass(QWidget, Ui_SomeDesign):
def __init__(self, parent=None):
QWidget.__init__(self, parent)
self.setupUi(self)
因此,我建議您刪除對設計類的所有修改或使用pyuic創建它們。
對於您的情況,我建議創建另一個名為main.py的文件,該文件與其他腳本位於同一文件夾中:
.
├── main.py <-- new file
├── SignIn.py
└── WelFrame.py
在此文件中,我們創建用於實現您的設計邏輯的類,並實現一種用於執行關閉當前小部件並顯示新小部件的任務的方法。
import sys
from PyQt4.QtGui import QWidget, QApplication
from SignIn import Ui_Form as SignInForm
from WelFrame import Ui_Form as WelFrameForm
class Sign(QWidget, SignInForm):
def __init__(self, parent=None):
QWidget.__init__(self, parent)
self.setupUi(self)
class WelFrame(QWidget, WelFrameForm):
def __init__(self, parent=None):
QWidget.__init__(self, parent)
self.setupUi(self)
def foo(w1, w2):
w1.show()
w2.hide()
if __name__ == '__main__':
app = QApplication(sys.argv)
wel = WelFrame()
sign = Sign()
wel.pushButton_2.clicked.connect(lambda : foo(sign, wel))
sign.pushButton_2.clicked.connect(lambda: foo(wel, sign))
wel.show()
sys.exit(app.exec_())
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