#!/usr/bin/env python # -*- coding:utf-8 -*- str="test" print(ascii(str)) a=bytearray("asdff",encoding='utf-8') print(a) b=bytearray(10) print(b) c=bytearray([1,1,3,6]) print(c) d=complex("1+2j") print(d) a1="3*5+9" a=compile(a1,'','eval') print(eval(a)) print(a1) py="print('this is a string')" result=exec(py) print(result) x = 10 expr = """ z = 30 sum = x + y + z print(sum) """ def func():     y = 20     exec(expr)     exec(expr, {'x': 1, 'y': 2})     exec(expr, {'x': 1, 'y': 2}, {'y': 3, 'z': 4}) func()