PySide: translate() String with variable arguments

pbouda

Hi,

In C++ and PyQt it is possible to use the arg() method on QStrings to insert some variables, so it was possible to translate those variable strings, for example:

@self.labelHalloWelt = QtGui.QLabel(self.tr("Hello %1!").arg("World"))@

I can now translate "Hello %1!" to "Hallo %1!" in the Linguist. How do I do this when I use PySide? It tried to use Python's format() like this:

@self.labelHalloWelt = QtGui.QLabel(self.tr("Hello {0}!".format("World")))@

This does not work, if I translate to "Hallo {0}!" I still get the English string.

renato.filho

I have created a samall example here and everything works fine, these are my files:

trans_latin.ts

@
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE TS><TS version="1.1" language="lt">
<defaultcodec></defaultcodec>
<context>
<name>QObject</name>
<message>
<source>Hello, {0}!</source>
<translation>Orbis, {0}!</translation>
</message>
</context>
</TS>
@

test.py:
@
translator = QTranslator()
translator.load(os.path.join(self.trdir, 'trans_latin.qm'))
self.app.installTranslator(translator)

    obj = QObject()
    obj.setObjectName(obj.tr('Hello, {0}!'))
    self.assertEqual(obj.objectName(), u'Orbis, {0}!')

@

Can you give me a complete example?

pbouda

Your example throws an Assertion Error at me...

@AssertionError: u'Hello, {0}!' != u'Orbis, {0}!'@

(Update: sorry, my fault, your code is correct: it is not throwing any error now)

But: did you try this with a "format()" call? As soon as I add the format() call to your code, the translation is not correct any more. How do I add the variable part to a string then?

Here is my code:

lokalisierung3.py:

@# -- coding: utf-8 --

import sys
from PySide import QtCore, QtGui

def main(argv):
app = QtGui.QApplication(argv)

QtGui.QApplication.setApplicationName("HalloWelt")

myappTranslator = QtCore.QTranslator()
myappTranslator.load("lokalisierung3_de")
app.installTranslator(myappTranslator)

mainwindow = MyMainWindow()
mainwindow.show()
sys.exit(app.exec_())

class MyMainWindow(QtGui.QMainWindow):

def __init__(self, *args):
    QtGui.QMainWindow.__init__(self, *args)
    self.createComponents()
    self.createLayout()

    self.setWindowTitle(self.tr("Hello World"))
    
def createComponents(self):
    self.labelHalloWelt = QtGui.QLabel(self.tr("Hello {0}!".format("World")))
    self.buttonTextAktualisieren = QtGui.QPushButton(self.tr("Update"))
    self.editText = QtGui.QLineEdit()

def createLayout(self):
    layoutZentral = QtGui.QVBoxLayout()
    layoutZentral.addWidget(self.labelHalloWelt)
    layoutZentral.addWidget(self.editText)
    layoutZentral.addWidget(self.buttonTextAktualisieren)
    
    widgetZentral = QtGui.QWidget()
    widgetZentral.setLayout(layoutZentral)
    self.setCentralWidget(widgetZentral)

if name == "main":
main(sys.argv)@

lokalisierung3_de.ts:

@<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE TS>
<TS version="2.0" language="de_DE">
<context>
<name>MyMainWindow</name>
<message>
<location filename="lokalisierung3.py" line="26"/>
<source>Hello World</source>
<translation>Hallo Welt</translation>
</message>
<message>
<location filename="lokalisierung3.py" line="29"/>
<source>Hello {0}!</source>
<translation>Hallo {0}!</translation>
</message>
<message>
<location filename="lokalisierung3.py" line="30"/>
<source>Update</source>
<translation>Aktualisieren</translation>
</message>
</context>
</TS>@

pbouda

OK, another sorry, I found my error. If I put the format() after the tr() everything works fine:

@self.labelHalloWelt = QtGui.QLabel(self.tr("Hello {0}!").format("World"))@