[ ]All1           [ ]All2

[ ]checkbox1A     [ ]checkbox1B

[ ]checkbox2A     [ ]checkbox2B

cbPairKeys = cbPairs.keys()
    for key in cbPairKeys:
        cbOne = cbPairs[key][0][0]
        cbTwo = cbPairs[key][1][0]
        cbOne.stateChanged.connect(self.syncCB)
        cbTwo.stateChanged.connect(self.syncCB)

def syncCB(self):
    pairKeys = cbPairs.keys()
    for keys in pairKeys:
        cbOne = cbPairs[keys][0][0]
        cbOneAllCB = cbPairs[keys][0][4]
        cbTwo = cbPairs[keys][1][0]
        cbTwoAllCB = cbPairs[keys][1][4]

        if self.sender() == cbOne:
            if cbOne.isChecked() or cbTwoAllCB.isChecked():
                cbTwo.setChecked(True)
            else:
                cbTwo.setChecked(False)
        else:
            if cbTwo.isChecked() or cbOneAllCB.isChecked():
                cbOne.setChecked(True)
            else:
                cbOne.setChecked(False)

#Connect checkbox pairs
cbPairKeys = cbPairs.keys()
    for key in cbPairKeys:
        cbOne = cbPairs[key][0][0]
        cbTwo = cbPairs[key][1][0]
        cbOne.toggled.connect(cbTwo.setChecked)
        cbTwo.toggled.connect(cbOne.setChecked)

#Connect allCB and allRO signals
cbsKeys = allCBList.keys()
    for keys in cbsKeys:
        for checkbox in allCBList[keys]:
            keys.toggled.connect(checkbox.setChecked)

{ All1 : [checkbox1A, checkbox1B],
  All2 : [checkbox2A, checkbox2B]}

for key, checkboxes in allCBList.iteritems():
    for checkbox in checkboxes:
        checkbox.toggled.connect(lambda checked, checkboxes=checkboxes, key=key: key.setChecked(checked and all(checkbox.isChecked() for checkbox in checkboxes))

lambda checked, checkboxes=checkboxes, key=key:

key.setChecked(...)

checked and all(checkbox.isChecked() for checkbox in checkboxes)

# Connect checkbox pairs
# you just use the values
# change 'itervalues' to 'values' if you are on Python 3.x
for cbPair in cbPairs.itervalues():
    cbOne = cbPair[0][0]
    cbTwo = cbPair[1][0]
    cbOne.toggled.connect(cbTwo.setChecked)
    cbTwo.toggled.connect(cbOne.setChecked)

# Connect allCB and allRO signals
# change 'iteritems' to 'items' if you are on Python 3.x
for key, checkboxes in allCBList.iteritems():
    for checkbox in checkboxes:
        key.clicked.connect(checkbox.setChecked)
        checkbox.toggled.connect(lambda checked, checkboxes=checkboxes, key=key: key.setChecked(checked and all(checkbox.isChecked() for checkbox in checkboxes))

self.cbPair = {}
    self.cbPair['0'] = (QtGui.QCheckBox('all1', parent),
        QtGui.QCheckBox('all2', parent))
    self.cbPair['1'] = (QtGui.QCheckBox('1a', parent),
        QtGui.QCheckBox('1b', parent))
    self.cbPair['2'] = (QtGui.QCheckBox('2a', parent),
        QtGui.QCheckBox('2b', parent))

    for v in self.cbPair.values():
        for cb in v:
            cb.clicked.connect(self.updateCB)

def updateCB(self):
    cb = self.sender()
    is_checked = cb.isChecked()
    id = str(cb.text())
    try:
        # Update a whole column
        column = int(id[-1]) - 1
        rows = ('1', '2')
    except ValueError:
        # Update a row and the headers row
        rows = (id[0], )
        column = {'a': 1, 'b': 0}.get(id[-1])
        if not is_checked:
            for c in (0, 1):
                self.cbPair['0'][c].setChecked(is_checked)
    for r in rows:
        self.cbPair[r][column].setChecked(is_checked)