Xtykutl

I want to use Python to convert some html files to PDF.
After looking at the modules and possibilities to do this, I settled on Qt5.

I have code that works, but it doesn't work exactly how I want.
I want to run my program via the command line, and it to exit once finished.
Currently, it produces the PDF but stays running.

If I uncomment and show the QWebEngineView with view.show(), then I can close the window that opens and the program will exit. (But I don't want to have any GUI, so this isn't good)

Next, I tried to show the view, then immediately close it after with view.close(), but when I do this a PDF doesn't get generated. I tried adding a 5 second sleep after view.show() and before view.close(), but still the same result.

I'm not sure if what I want is possible, I understand Qt is for GUIs but it would be very convenient if I could get this working completely through the command line.

import sys

import os

from time import sleep



from PyQt5.QtWidgets import QApplication

from PyQt5.QtWebEngineWidgets import QWebEngineView

from PyQt5.QtCore import QDir, QUrl



# needed to load local html files

sys.argv.append("--disable-web-security")

app = QApplication(sys.argv)



raw_html = ""

with open('webpage.htm', 'r') as myfile:

    raw_html = myfile.read()



view = QWebEngineView()

view.setHtml(raw_html)



def save_pdf(finished):

    view.page().printToPdf("output.pdf")

    # view.show()

    # view.close()



view.loadFinished.connect(save_pdf)



sys.exit(app.exec_())

Try it:

import sys

from PyQt5 import QtCore, QtWidgets, QtWebEngineWidgets



app = QtWidgets.QApplication(sys.argv)



loader = QtWebEngineWidgets.QWebEngineView()

loader.setZoomFactor(1)



loader.page().pdfPrintingFinished.connect(loader.close)             # <---



loader.load(QtCore.QUrl('https://en.wikipedia.org/wiki/Main_Page'))



def emit_pdf(finished):

    #loader.show()

    loader.page().printToPdf("test.pdf")



loader.loadFinished.connect(emit_pdf)



app.exec()