def load(self, last):
i = 10
label = None
if last - 100 < 0:
chain = self.chain[:last]
else:
chain = self.chain[last - 100:last]
chain.reverse()
for c in chain:
if i == 10:
label = Label(size_hint=(None, None), text='')
label.index = c['header']['index'] - 10
self.ids.chain.add_widget(label, 1)
i = 0
label.text += json.dumps(c, indent=4) + '\n'
label._label.refresh()
label.size = label._label.texture.size
i += 1
if last - 100 < 0:
self.ids.chain.remove_widget(self.ids.load)
