python - 如何使用字符串获取函数？

Question

我想获取带有函数名字符串的函数 例如。

class test(object):
  def fetch_function():
    print "Function is call"

 #now i want to fetch function  using  string 
 "fetch_function()"

结果应该是:Function is call

Answer 1

如果您要从 fetch_function() 中保留 ()，您可以使用 getattr，我认为这比 eval 更安全:

class Test(object):

    def fetch_function():
        print "Function is called"

test_instance = Test()
my_func = getattr(test_instance, 'fetch_function')

# now you can call my_func just like a regular function:
my_func()