python数据分析基础（15）-字符串编译成可执行代码

将字符串编译成python 能识别或可执行的代码

s="print('hello world')"
r=compile(s,"<string>","exec")
print(r)
exec(r)
out: 
<code object <module> at 0x7f08133268a0, file "<string>", line 1>
hello world