Changing Variables within Variables?

[snippsat]

The key:value will never change.
I know what you mean a dictionary with more key:value can order change.

So here order change,not key:value. 

# 3.4
>>> d
{'hello': '1'}
>>> d1 = {'car': 5}
>>> d.update(d1)
>>> d
{'car': 5, 'hello': '1'}

Using 3.4 over,in 3.6 dict is ordered(not guaranteed yet).

# 3.6
>>> d = {'hello': 1}
>>> d1 = {'car': 5}
>>> d.update(d1)
>>> d
{'hello': 1, 'car': 5}