Python中大型数据结构的性能

I'm looking for some help understanding the performance characteristics of large lists, dicts or arrays in Python. I have about 1M key value pairs that I need to store temporarily (this will grow to maybe 10M over the next year). They keys are database IDs ranging from 0 to about 1.1M (with some gaps) and the values are floats.I'm looking for some help understanding the per