self.comboBox.activated[str].connect(self.on_combo_activated)
At the moment when a combo box gets selected only the value of the combo box gets passed on to the function on_combo_activated.
How would I do if I wanted to send another two variables?
One way to solve this is by using a lambda function:
self.comboBox.activated[str].connect(
lambda text: self.on_combo_activated(text, 'str1', 'str2'))
...
def on_combo_activated(self, text, arg1, arg2):
print(text, arg1, arg2)
The functools.partial function does something similar, but it can sometimes be awkward to use it with positional arguments. If you used it to connect the above slot like this:
self.comboBox.activated[str].connect(
partial(self.on_combo_activated, 'str1', 'str1')
the slot would actually print str1 str2 text, because extra positional arguments are always appended, rather than inserted. However, with keyword arguments, it would work as expected:
self.comboBox.activated[str].connect(
partial(self.on_combo_activated, arg1='str1', arg2='str1'))
This last approach might be preferred over the others as it is self-documenting, and therefore perhaps more readable.