What do you want to understand about Python? To understand the performance of Python it's more important to understand how CPUs work, but C doesn't help much th

What do you want to understand about Python? To understand the performance of Python it's more important to understand how CPUs work, but C doesn't help much there. If you look up how e.g. a hash table is implemented at the low level it should give you and idea how the "standard library" and dicts of Python work.