pyqt, How to Use sectionClicked with lambda

Question

I am trying to use pyqt.

When using 'sectionClicked.connect', (Like below case) I can use the default(?) parameter(index) that sectionClicked pass to me.

self.horizontalHeader = self.table.horizontalHeader()
self.horizontalHeader.sectionClicked.connect(self.HeaderClicked)

def HeaderClicked(index):
  ~~~

In this case, I want to add arguments at def HeaderClicked.

Like below

self.horizontalHeader = self.table.horizontalHeader()
self.horizontalHeader.sectionClicked.connect(lambda : self.HeaderClicked(foo, bar))

def HeaderClicked(index, foo, bar):
  ~~~

But Like this, I can't use parameter that sectionClicked pass to me.

What should i do?

score 1 · Accepted Answer · answered Sep 11 '20 at 11:30

You can provide parameters to a lambda expression so you could do something like this

self.horizontalHeader.sectionClicked.connect(lambda index: self.HeaderClicked(index, foo, bar))

def HeaderClicked(index, foo, bar):
    ...

Another option would be to use functools.partial instead of a lambda expression, i.e.

from functools import partial

self.horizontalHeader.sectionClicked.connect(partial(HeaderClicked, foo=foo, bar=bar))

pyqt, How to Use sectionClicked with lambda

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