updating nested dictionary item in python
I need to update(add to it) a dictionary **bookmarks** that has the value 

{1.0: {1.0: 'E:\\Users\\san\\Documents\\Downloads\\', '__flags': 256}, 2.0: {1.0: 'E:\\Users\\Public\\Documents\\eyeon\\Fusion\\Comps\\', '__flags': 256}} 

how would I do so ?
updating nested dictionary item in python
===

I need to update(add to it) a dictionary **bookmarks** that has the value 

{1.0: {1.0: 'E:\\Users\\san\\Documents\\Downloads\\', '__flags': 256}, 2.0: {1.0: 'E:\\Users\\Public\\Documents\\eyeon\\Fusion\\Comps\\', '__flags': 256}} 

how would I do so ?