python_interpreter

CS152 standard answer in 2019, TAs' solution This is a naive python interpreter that supports:

1.keywords

None; True; False; return; break; continue; if; elif; else; while; and; or; not; def.

2.#

3.variables

superlong int, double(16), bool, str and part of tuple.

4.assignment and augassignment

5.calculating

1)+, -, *, /, //, %

notice that str + str, str * int and int * str are valid.

2)<, >, <=, >=, ==, !=

a chain of comparisons is avaliable.

3)and, or, not

in this version, the return value is a bool instead of what python returns

4)'()'

6.logical statement

if...elif...elif...else...

7.flow statement

while

8.function definition

positional assignment and default assignment are avaliable print(), int(), float(), str(), bool() are already defined