Loading python module with GUI - python

I have a organization setup question I need help with. Here is my current folder structure.
What i want to do is run the Main UI with the specified AppCommands module that contains functions. Based on which application i want to run the tool. Is there a way using another python file, where i can load the gui and the associated app commands moduel? So when users click the button it calls the corrects app command.
So say for example I create a python file like this pseudo code
main execute py file for Photoshop
Import photoshop.appcommands as cmds
Import GUI
Gui(cmds)
How do I then tell my main GUI tool to load the photoshop modules 'AppCommands' when it runs?
app #1 code:
def runTool():
msg = 'This is Notepad'
print msg
app #2 code:
def runTool():
msg = 'This is Photoshop'
print msg
Main ui code:
import sys
import os
from PySide import QtGui, QtCore
import AppCommands as cmds
class MainWindow(QtGui.QMainWindow):
def __init__(self,parent=None):
super(MainWindow, self).__init__(parent)
self.uiButton = QtGui.QPushButton('Button', self)
# layout
grid = QtGui.QGridLayout()
grid.addWidget(self.uiButton, 3, 1)
main_widget = QtGui.QWidget()
main_widget.setLayout(grid)
self.setCentralWidget(main_widget)
self.uiButton.clicked.connect(self.browse_clicked)
# actions
def browse_clicked(self):
print 'Execute Command'
cmds.runTool()
if __name__ == '__main__':
app = QtGui.QApplication(sys.argv)
ex = MainWindow()
ex.show()
sys.exit(app.exec_())

Well, if I understood correctly, you need to choose the right module to load a function after then you started the program with some variable args?
In this case you may import both and try globals:
import notepad.AppCommands
import photoshop.AppCommands
...
# in your app init code:
x = 'photoshop' # an arg passed from config/CLI or from somewhere else
actual_module = globals()[x]
actual_module.AppComands.runTools()
++ But if you just don't know how to run a certain function from a certain module, follow #eyllanesc's answer.

Related

How to Import Pyqt5 Widget In Another File

First File first.py
import pyqt5py
ret=pyqt5py.confirm()
print(ret)
Second File Having PYQT5 name: pyqt5py.py
import sys
from PyQt5 import QtWidgets, uic
class Ui(QtWidgets.QDialog):
def __init__(self,button1='Ok',button2='Cancel',text='Are You Sure?'):
super(Ui, self).__init__() # Call the inherited classes __init__ method
uic.loadUi('dialog.ui', self) # Load the .ui file
# Show the GUI
self.pushButton1.clicked.connect(lambda: self.click(1))
self.pushButton2.clicked.connect(lambda: self.click(2))
self.label.setText(text)
self.pushButton1.setText(button1)
self.pushButton2.setText(button2)
self.show()
def click(self,args):
print(self)
return self.sender().text()
app = QtWidgets.QApplication(sys.argv) # Create an instance of QtWidgets.QApplication
def confirm():
def pressed():
return 'clicked'
window = Ui(button1='Ok',button2='Cancel',text='Are You Sure?') # Create an instance of our class
print(window)
window.pushButton1.clicked.connect(pressed)
app.exec_() # Start the application
but i dont know what changes should i do make my first.py to work,i have correctly made the pyqt5 file but i dont know how to add def to call it for confirm
#######################
I Updated My Second File
As suggested by bfris you should rewrite the last lines of pyqt5py.py as follows:
if __name__ == '__main__':
app = QtWidgets.QApplication(sys.argv)
window = Ui(button1='Ok',button2='Cancel',text='Are You Sure?')
app.exec_()
That way you can run this file directly for debbugging purposes, but also import it elsewhere.
To use your widget in first.py you need to create an instance of it there.
first.py:
from pyqt5py.py import UI
app = QtWidgets.QApplication(sys.argv)
window = Ui(button1='Ok',button2='Cancel',text='Are You Sure?')
app.exec_()
Usually I use a QDialog within a Qt environment where it is opened from a QMainWindow and also returning which button was clicked to the QMainWindow.
However as I understand you would like to run another program and in between open your UI? I am not experienced doing that but it seems to me that its exec method does exactly that though you should read this discussion about a bug related to it.
Alternatively in first.py you connect the pushbutton's clicked signal to a slot, a function there.

How do I include scripts in a qt application?

I am trying to use four diferents python scripts in a GUI application.
Every script has around 500 code lines. Then I donĀ“t like to include the every full scrip as a function.
This is the skeleton of the application:
from FullConversor import * #this is the .py gui
import sys
import datetime
import os
import pandas as pd
import shapefile as shp
import csv
import tkinter.filedialog
class FullConversorGUI(QtGui.QMainWindow):
def __init__(self, parent=None):
QtGui.QWidget.__init__(self, parent)
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
QtCore.QObject.connect(self.ui.pushButtonConvert, QtCore.SIGNAL ('clicked()') ,self.conversor)
QtCore.QObject.connect(self.ui.pushButtonClose, QtCore.SIGNAL ('clicked()') ,self.close)
def conversor(self):
if self.ui.radioButton1.isChecked()== True:
pass
if self.ui.radioButton2.isChecked()== True:
pass
if self.ui.radioButton3.isChecked()== True:
pass
if self.ui.radioButton4.isChecked()== True:
pass
if __name__=='__main__':
app = QtGui.QApplication(sys.argv)
myapp = FullConversorGUI()
myapp.show()
sys.exit(app.exec_())
Every radioButton must launch a python script, just a .py file who runs fine alone.
How do I do that?
Call import on your script, and run the main function of it when you need.
Pretend you have a script called myscript.py
# this is myscript.py
def main():
# this function will be called from your gui. all your logic should be here.
print "my script"
if __name__ == '__main__':
# this function is called when you invoke the script from the command line.
main()
Then in your gui....
import myscript
if self.ui.radioButton1.isChecked()== True:
myscript.main()
# continue after the script runs
This would result in the following output to stdout:
my script
Obviously, you wouldn't have just a print statement in myscript.py. You can have it run whatever logic you would like.

interactive python - keeping console interactive with a GUI mainloop

I am wondering how one would create a GUI application, and interact with it from the console that started it.
As an example, I would like to create a GUI in PyQt and work with it from the console. This could be for testing settings without restarting the app, but in larger projects also for calling functions etc.
Here is a simple example using PyQt:
import sys
from PyQt4 import QtGui
def main():
app = QtGui.QApplication(sys.argv)
w = QtGui.QWidget()
w.show()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
when this is run with python -i example.py the console is blocked as long as the main-loop is executed.
How can I call w.resize(100,100) while the GUI is running?
ops, posted wrong answer before
there is a post in Stack about that
Execute Python code from within PyQt event loop
The following example uses the code module to run a console in the command prompt (be sure to run the script from the command line). Subclassing QThread provides a route by which the console can be run in a separate thread from that of the main GUI and enables some interaction with it. The stub example below should be easy enough to incorporate into a larger packaged PyQt program.
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
import threading #used only to id the active thread
import code
import sys
class Worker(QThread): #Subclass QThread and re-define run()
signal = pyqtSignal()
def __init__(self):
super().__init__()
def raise_sys_exit(self): #more gracefully exit the console
print('(Deactivated Console)')
raise SystemExit
def setup_console(self,global_dict):
console_exit = {'exit': self.raise_sys_exit}
self.console = code.InteractiveConsole(locals=dict(global_dict,**console_exit))
def run(self):
try:
print('worker', threading.get_ident())
self.console.interact()
except SystemExit:
self.signal.emit()
class MainWindow(QMainWindow):
def __init__(self, *args, **kwargs):
super(MainWindow, self).__init__(*args,**kwargs)
self.data = [1,2,3,4] #some data we might want to look at
layout = QVBoxLayout()
self.b = QPushButton("Interact")
self.b.clicked.connect(self.b_clicked)
layout.addWidget(self.b)
w = QWidget()
w.setLayout(layout)
self.setCentralWidget(w)
self.worker = Worker()
self.worker.signal.connect(self.finished)
def finished(self):
self.b.setEnabled(True)
def b_clicked(self):
print('main',threading.get_ident())
self.worker.setup_console(globals()) #pass the global variables to the worker
self.worker.start()
self.b.setEnabled(False) #disable the GUI button until console is exited
if __name__ == '__main__':
app = QApplication(sys.argv)
window = MainWindow()
window.show()
app.exec_()
The easiest way is to use IPython:
ipython --gui=qt4
See ipython --help or the online documentation for more options (e.g. gtk, tk, etc).

PyQt4 app button not working

I'm trying to set up an app in Linux using PyQt4 designer and I'm struggling to connect signals and slots to it. Right now all I want it to do is connect a button clicked signal to a custom slot, saveEnergyScheme which simply prints 'energy list' to the terminal.
I've translated the .ui code for my app to a python class with pyuic4 -w sumcorr.ui > sumcorr_ui.py. This created a class in the sumcorr_ui.py module called SumCorr_ui:
class SumCorr_ui(QtGui.QMainWindow, Ui_SumCorr_ui):
def __init__(self, parent=None, f=QtCore.Qt.WindowFlags()):
QtGui.QMainWindow.__init__(self, parent, f)
self.setupUi(self)
I then made my app as a custom widget and tried to add a simple signal-slot connection to a button to show it works:
from PyQt4 import QtGui, QtCore
from sumcorr_ui import SumCorr_ui
class SumCorr(SumCorr_ui):
def __init__(self):
SumCorr_ui.__init__(self)
self.save_energies_button.clicked.connect(self.saveEnergyScheme)
def saveEnergyScheme(self):
print 'energyList'
if __name__ == '__main__':
import sys
app = QtGui.QApplication(sys.argv)
mySumCorr = QtGui.QMainWindow()
ui = SumCorr()
ui.setupUi(mySumCorr)
mySumCorr.show()
sys.exit(app.exec_())
I expect to get the line 'energy list' when I click the button named save_energies_button, but nothing happens. Could this be because I haven't built the UI as a widget, but as a main window? Why doesn't it print out??
Try to add ui.show() and you'll see that your code is creating two different windows, one should have the signal connected and one doesn't. That's because you are showing only the mySumCorr window, but you call only setupUi on it, which does not connect the signal.
When you create the SumCorr instance, you are creating a window and setting it up, then, by no reason, you do ui.setupUi(mySumCorr), which setups the mySumCorr instance without connecting the signal, and you show this last window.
I believe your code should be like this:
class SumCorr(QtGui.QMainWindow, Ui_SumCorr_ui):
def __init__(self):
SumCorr_ui.__init__(self)
self.setupUi(self)
self.save_energies_button.clicked.connect(self.saveEnergyScheme)
def saveEnergyScheme(self):
print 'energyList'
if __name__ == '__main__':
import sys
app = QtGui.QApplication(sys.argv)
mySumCorr = SumCorr()
mySumCorr.show()
sys.exit(app.exec_())
Note that it doesn't make any sense to have a SumCorr_ui class, that's because Qt is a UI library so you are just introducing a worthless level of abstraction. The designer file already gives you an abstraction over the ui layout.

Running python files

I am working on pyqt4 and python26 application.I created forms using qt designer (.ui files).
I converted them to .py and .pyc files.But when i try to run .py file ,python command line comes and goes within a second,the form (corresponding .ui file) cannot be seen...what can be the problem??
this is my code:(.py file)
from DlgAbout_ui import Ui_DlgAbout
from PyQt4.QtCore import *
from PyQt4.QtGui import *
import resources
class DlgAbout(QDialog, Ui_DlgAbout):
def __init__(self, parent=None):
QDialog.__init__(self, parent)
self.setupUi(self)
self.logo.setPixmap( QPixmap( ":/icons/faunalia_logo.png" ) )
text = self.txt.toHtml()
text = text.replace( "$PLUGIN_NAME$", "RT Sql Layer" )
self.txt.setHtml(text)
First, don't use:
from PyQt4.QtCore import *
from PyQt4.QtGui import *
Instead:
from PyQt4 import QtCore, QtGui
And reference the modules explicitly.
class DlgAbout(QtGui.QDialog, Ui_DlgAbout):
etc.
In your code, all you've done is defined a dialog box. You haven't defined any main application to run, or any way to show the dialog box.
For an example, here's a basic main application to run:
from PyQt4 import QtGui
import sys
class MyMainWindow(QtGui.QMainWindow):
def __init__(self, parent=None):
super(MyMainWindow, self).__init__(parent)
self.form_widget = FormWidget(self)
self.setCentralWidget(self.form_widget)
class FormWidget(QtGui.QWidget):
def __init__(self, parent):
super(FormWidget, self).__init__(parent)
self.layout = QtGui.QVBoxLayout(self)
self.button = QtGui.QPushButton("Button!")
self.layout.addWidget(self.button)
if __name__ == "__main__":
app = QtGui.QApplication([])
foo = MyMainWindow()
foo.show()
sys.exit(app.exec_())
This defines a main window, and a form (Which MyMainWindow sets up, as you can see).
I then check if this is the main file being run (if __name__ == "__main__":), and I start the application (The app = QtGui.QApplication([]), create the main window, and show the main window.
In your case, you could define a main application like I did, and make it alert your QDialog.
Your python code just imports some modules and then defines a new class. It doesn't do anything with the class it has defined, though. In other words, once Python is done creating the new class, it is finished, and it exits.
I don't know PyQT at all, but most likely you need to start the GUI's main loop, and also instantiate an instance of your new class and pass it to PyQT.

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