Pyinstaller does not work properly with streaming processing

Question

A program that runs a bat file that contains instructions for running an executable file (longTask) using Qthread, but it does not work properly when I create an executable using Pyinstaller with the following command. I gave "--windowed" to not provide a console window for standard I / O

pyinstaller --onefile --windowed main.py

But the interesting thing is that this works, as expected, when I remove the argument

pyinstaller --onefile main.py

Here is the code:

from PyQt4.Qt import *
import subprocess


def callSubprocess():
    page = QWizardPage()
    page.setTitle("Run myLongTask")

    runButton = QPushButton("Run")
    progressBar = QProgressBar()
    procLabel = QLabel()
    procLabel1 = QLabel()
    progressBar.setRange(0, 1)

    layout = QGridLayout()
    layout.addWidget(runButton, 0, 0)
    layout.addWidget(progressBar, 0, 1)
    layout.addWidget(procLabel)
    layout.addWidget(procLabel1)

    # Calls thread class
    myLongTask = TaskThread()
    runButton.clicked.connect(lambda: OnStart(myLongTask, progressBar, procLabel1))
    myLongTask.taskFinished.connect(lambda: onFinished(progressBar, procLabel))
    page.setLayout(layout)
    return page


def OnStart(myLongTask, progressBar, procLabel1):
    progressBar.setRange(0, 0)
    myLongTask.start()
    # I am waiting until my subprocess completes
    while not myLongTask.isFinished():
        QCoreApplication.processEvents()
    procLabel1.setText("Hello This is main")


def onFinished(progressBar, procLabel):
        # Stop the pulsation
        progressBar.setRange(0, 1)
        procLabel.setText("longTask finished")


class TaskThread(QThread):
    taskFinished = pyqtSignal()
    def __init__(self):
        QThread.__init__(self)

    def run(self):
        proc = subprocess.Popen(r'C:\Users\Desktop\runInf.bat', bufsize=0, shell=True,  stdout=subprocess.PIPE)
        proc.wait()
        self.taskFinished.emit()

    def __del__(self):
        self.wait()


if __name__ == '__main__':
    import sys
    app = QApplication(sys.argv)
    wizard = QWizard()
    wizard.addPage(callSubprocess())
    wizard.setWindowTitle("Example Application")
    wizard.show()

sys.exit(wizard.exec_())

When executing the above code in Pycharm, it works as expected. But when building with PyInstaller, the main thread does not wait for the subprocess to complete.

Any idea of ​​creating an executable when the threads are working as expected. thanks in advance

Answer 1

. .

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So Pyinstaller

proc = subprocess.Popen(os.getcwd() + r'\runInf.bat',
                            shell=True,
                            stdout=subprocess.PIPE,
                            stderr=subprocess.STDOUT,
                            stdin=subprocess.PIPE,
                            cwd=os.getcwd(),
                            env=os.environ)
proc.stdin.close()

,