recipe-362305.py 文件源码

def rework(func):
    """
    rework() modifies the functions source code by first adding self 
    as the first argument in the parameter list and then adding
    'exec(magic())' as the first line of the function body. It does this
    by reading the functions source code and then creating a new modified
    function definition with exec() and then returns the new function.
    """
    srclines, line_num = inspect.getsourcelines(func)
    srclines = outdent_lines(srclines)
    dst = insert_self_in_header(srclines[0])
    if len(srclines) > 1:
        dst += get_indent_string(srclines[1]) + "exec(magic())\n"
        for line in srclines[1:]:
            dst += line
    dst += "new_func = eval(func.__name__)\n"
    exec(dst)
    return new_func