Try this instead: for i in xrange(len(data)): data[i] = “everything” The basic problem you’re having is that when you write data[i], with data being a list, the i needs to be an integer, a numerical index into the list. But in the loop for item in data item is the actual thing that’s in the … Read more
As you can see from the latest updated code – self.changes = {“MTMA”,123} When you define self.changes as above , you are actually defining a set , not a dictionary , since you used ‘,’ (comma) instead of colon , I am pretty sure in your actual code you are using comma itself , not … Read more
First add your item to mItems and then use: mAdapter.notifyItemInserted(mItems.size() – 1); this method is better than using: mAdapter.notifyDataSetChanged(); in performance.
default_data[‘item3’] = 3 Easy as py. Another possible solution: default_data.update({‘item3’: 3}) which is nice if you want to insert multiple items at once.