Python minimal core: the way of programming

Goal: build a simple and clear framework (without paying attention to completeness)

stage1

stage1 (primary understanding):程序 = 值（value）+ 操作符（operator）

The so-called programming can be simply analogous to mathematical operations 1+1=2: we input 1+1, and the computer outputs the result 2.

Note that in Python " value (value) ", refers to more than just numbers, but all the " objects (Object) ", will follow-up with the "object" this name, this is not the first start, the back will be talked about .

stage2

stage2 (in-depth understanding):<