In my python project, I used Basler GigE Vision ethernet cameras, because of the pylon doesn't support python then I used pypylon.pylon wrapper to open it in python. This is my class to open the camera, but after making executable file I get errors when opening it. I used spec file to work with pyinstaller.I get this below errors:

import pypylon.pylon as py
import numpy as np


class PylonVideoReader:

def __init__ (self, deviceName=None):
    self.deviceName = deviceName
    tlfactory = py.TlFactory.GetInstance()
    if not self.deviceName is None:
        deviceInfoList = tlfactory.EnumerateDevices()
        deviceIndex = None
        for i in range(len(deviceInfoList)):
            if self.deviceName == deviceInfoList[i].GetUserDefinedName():
                deviceIndex = i
                break

        if deviceIndex is None:
            print("Device: {} not found please ensure that it is "
                  "connected".format(self.deviceName))
            exit()
        else:
            # Create new camera
            self.camera = py.InstantCamera(tlfactory.CreateDevice(
                deviceInfoList[deviceIndex]))
    else:
        # Create new camera
        self.camera = py.InstantCamera(tlfactory.CreateFirstDevice())

    # Open camera
    self.camera.Open()
    # Set max number of frame buffers
    self.camera.MaxNumBuffer = 50
    # Initialize the image format converter
    self.formatConverter = py.ImageFormatConverter()
    # Set output pixel format to BGR8 for opencv
    self.formatConverter.OutputPixelFormat = py.PixelType_BGR8packed

    # Start grabbing process
    self.camera.StartGrabbing(py.GrabStrategy_LatestImageOnly)
    # Grab a first image to get its size
    grabResult = self.camera.RetrieveResult(10000)
    # Stop grabbing process
    # self.camera.StopGrabbing()

    # Get dimensions of image
    self.frameWidth = grabResult.GetWidth()
    self.frameHeight = grabResult.GetHeight()

def get(self, code):
    if code == 3:
        return self.frameWidth
    elif code == 4:
        return self.frameHeight
    else:
        print("{} is not a known property code".format(code))

def read(self):
    # try:

    # Start grabing process
    # self.camera.StartGrabbing(py.GrabStrategy_LatestImageOnly)
    # Grab an image
    grabResult = self.camera.RetrieveResult(10000)
    # Stop grabing process
    # self.camera.StopGrabbing()
    # Get dimensions of image
    self.frameWidth = grabResult.GetWidth()
    self.frameHeight = grabResult.GetHeight()

    if grabResult.GrabSucceeded():
        # Convert Grab result from YUV422 to BGR8
        pylonImage = self.formatConverter.Convert(grabResult)
        # Convert pylon image to opencv image
        # image = np.frombuffer(bytearray(pylonImage.GetBuffer()), np.uint8)
        image = np.asarray(bytearray(pylonImage.GetBuffer()), np.uint8)
        image = image.reshape(self.frameHeight, self.frameWidth, 3)

        return (True, image)
    # except :
    return (False, None)

def release(self):
    self.camera.StopGrabbing()
    self.camera.Close()

main code:

if __name__ == " __main__":    
    cap = PylonVideoReader("Admin1")
    cv2.namedWindow("Test1", cv2.WINDOW_NORMAL)
    while True:
        ret, image = cap.read()                
        if ret:
            cv2.imshow("Test1", image)
        if cv2.waitKey(1) % 256 == ord('q'):
            break

Erro message:

Traceback (most recent call last): File "site-packages\pypylon\pylon.py", line 42, in swig_import_helper
File "importlib __init__.py", line 126, in import_module File "", line 994, in _gcd_import File "", line 971, in _find_and_load File "", line 953, in _find_and_load_unlocked ModuleNotFoundError: No module named 'pypylon._pylon'

During handling of the above exception, another exception occurred:

Traceback (most recent call last): File "MainGuiLogic.py", line 18, in File "c:\programdata\anaconda3\lib\site-packages\PyInstaller\loader\pyimod03_importers.py", line 631, in exec_module exec(bytecode, module.dict) File "PylonVideoReader.py", line 1, in File "c:\programdata\anaconda3\lib\site-packages\PyInstaller\loader\pyimod03_importers.py", line 631, in exec_module exec(bytecode, module.dict) File "site-packages\pypylon\pylon.py", line 45, in File "site-packages\pypylon\pylon.py", line 44, in swig_import_helper
File "importlib __init__.py", line 126, in import_module File "c:\programdata\anaconda3\lib\site-packages\PyInstaller\loader\pyimod03_importers.py", line 714, in load_module module = loader.load_module(fullname) ModuleNotFoundError: No module named 'pypylon._genicam' [4300] Failed to execute script MainGuiLogic [4300] LOADER: OK. [4300] LOADER: Cleaning up Python interpreter.