def do_foo():
    print "foo!"

def do_bar():
    print "bar!"

class Print():
    def __init__(self):
        self.x = 1;
    def do_foo(self):
        print "foo!"

    def do_bar(self):
        print "bar!"

    def foo(self):
        print("foo")

    @staticmethod
    def static_foo():
        print
 
 "static foo!"

    @staticmethod
    def static_bar():
        print "static bar!"

if __name__ == '__main__':
    obj = Print()

    func_name = "do_foo"
    static_name = "static_foo"
    fun="foo"
    x = "x"
    eval(func_name)()
    print(getattr(obj, x))
    getattr(obj, fun)()
    getattr(Print, static_name)()

    func_name = "do_bar"
 

    static_name = "static_bar"
    eval(func_name)()
    getattr(obj, func_name)()
    getattr(Print, static_name)()

其核心就是eval和getattr這兩個函式