⚠️ 最后一站：真的跑一次

把编译好的那个 code 对象真的执行一次：

import ast, io, tokenize

LINE = 'print("hi")'

def toks(src):
    skip = (tokenize.NEWLINE, tokenize.NL, tokenize.ENDMARKER,
            tokenize.INDENT, tokenize.DEDENT)
    return [t.string for t in tokenize.generate_tokens(io.StringIO(src).readline)
            if t.type not in skip]

code = compile(LINE, "<s>", "exec")
exec(code, {"print": print})