Python3.7 How to get URL as string

[Junhi]

@jsulm Thank you jsulm, but that is not my want.

1. If I click [View Detail], anchorClicked event may occur.

2. The event send signal to Mainwindow.show_monitor_temp

   self.dis_message.anchorClicked['QUrl'].connect(MainWindow.show_monitor_temp)

3. At the Mainwindow.show_monitor_temp(), I want to know how to retrieve URL information, sent by anchorClicked signal. <-- That is my question.

[jsulm]

@Junhi So, you want to download data from URL?
See https://doc.qt.io/qt-5/qnetworkaccessmanager.html

[JonB]

@Junhi
Not sure if you're asking about what @jsulm has pointed you to, or if you are asking how you know what the anchor clicked was, in which case https://doc.qt.io/qt-5/qtextbrowser.html#anchorClicked shows void QTextBrowser::anchorClicked(const QUrl &link) signal passes the QUrl link to your slot?

[Junhi]

@JonB Yes, I think QUrl information passes to my slot(MainWindow.show_monitor_temp).
self.dis_message.anchorClicked['QUrl'].connect(MainWindow.show_monitor_temp)
But it seems not work properly.

[JonB]

@Junhi said in Python3.7 How to get URL as string:

But it seems not work properly.

What does that mean, how would you like us to help on that?? Do you think it would help us if you showed us your slot code?

Meanwhile, you don't tell us whether you are using PySide2 or PyQt5. Which one is that self.dis_message.anchorClicked['QUrl'].connect() syntax for, with the ['QUrl']? I have not (so far) needed to use that syntax in either one.

[Junhi]

@JonB Sorry, It is my first time of python programming. There may be many mistake ..
I use PyQt5.

This is part of my code.

===== main.py ======
import sys
import os
import sqlite3
import time
from PyQt5.QtCore import pyqtSlot, QDate,QUrl
from PyQt5.QtWidgets import QMainWindow, QApplication, QWidget, QCalendarWidget, QDialog, QCheckBox
from PyQt5 import QtCore, QtGui, QtWidgets
from monitor import Ui_MainWindow

class Form(QMainWindow, Ui_MainWindow):
def init(self, parent=None):
super().init()
def show_monitor_temp(self):

    print("show_monitor_temp")
    print(QUrl().toString())

==== monitor.py (designed by QT Designer 5.13) ====
from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_MainWindow(object):
def setupUi(self, MainWindow):
self.dis_message = QtWidgets.QTextBrowser(self.splitter)
self.dis_message.anchorClicked['QUrl'].connect(MainWindow.show_monitor_temp)

[JonB]

@Junhi
[I think you have written which code is in which file the wrong way round.]

Your connection should be:

self.dis_message.anchorClicked.connect(MainWindow.show_monitor_temp)

• I don't think there are any other overloads of anchorClicked(), or at least we are using the default one, so we don't need the anchorClicked['QUrl']. You can put it back in if you prefer/I am mistaken.

Your slot should be:

@pyqtslot(QUrl)   # you can probably omit this, for now
                  # or, you might need @pyqtslot('QUrl')
def show_monitor_temp(self, url):
    print("show_monitor_temp")
    print(url.toString())  # maybe just: print(str(url))

• See how the slot gets the QUrl as a parameter, because the signal passes it.

Reference for PyQt5 signals/slots is https://www.riverbankcomputing.com/static/Docs/PyQt5/signals_slots.html.

Above is quite untested. Give it a go and see how you fare. The important thing is to grasp how the slot receives the QUrl clicked on from the signal as a parameter, which is what you were missing. This is the only bit you have to change, other than that your code is fine.

[Junhi]

@Denni-0 @JonB

I solved the problem by changing

self.dis_message.anchorClicked['QUrl'].connect(MainWindow.show_monitor_temp) ->
self.dis_message.anchorClicked.connect(MainWindow.show_monitor_temp)

@pyqtslot() -> @pyqtslot('QUrl')

Thank you for your kind help.

[JonB]

@Junhi
And by adding url as formal parameter to your def show_monitor_temp(self, url):! Now you know how slots receive any arguments from signals.

[Junhi]

@JonB Yes, right

adding url as formal parameter to def show_monitor_temp(self, url):

:-)