Python: compile () function

description

compile () function is compiled to a byte code string.
grammar

The following is the syntax compile () method:

compile(source, filename, mode[, flags[, dont_inherit]])

parameter

source -- 字符串或者AST(Abstract Syntax Trees)对象。。
filename -- 代码文件名称,如果不是从文件读取代码则传递一些可辨认的值。
mode -- 指定编译代码的种类。可以指定为 exec, eval, single。
flags -- 变量作用域,局部命名空间,如果被提供,可以是任何映射对象。。
flags和dont_inherit是用来控制编译源码时的标志

return value

Expression that returns the result.
Examples

The following example demonstrates the use of compile function:

>>>str = “for i in range(0,10): print(i)”

>>> c = compile (str, '', 'exec') # compiled into byte code object

>>> c

<code object at 0x10141e0b0, file “”, line 1>

>>> exec©

0
1
2
3
4
5
6
7
8
9

>>> str = “3 * 4 + 5”

>>> a = compile(str,’’,‘eval’)

>>> eval(a)

17

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Origin blog.csdn.net/weixin_44523387/article/details/93371693