Python 3.3.2检查对象是否为文件类型

Python 3 file objects are part of the io module, test against ABC classes in that module:from io import IOBaseif isinstance(someobj, IOBase):在Python 2中不要使用type(obj) == file；您应该使用isinstance(obj, file)代替.即使那样，您仍要测试功能； io ABC允许您执行的操作； isinstance()函数将为实现抽象方法的所有方法的任何对象返回True.基类定义.Don't use type(obj) == file in Python 2; you'd use isinstance(obj, file) instead. Even then, you would want to test for the capabilities; something the io ABCs let you do; the isinstance() function will return True for any object that implements all the methods the Abstract Base Class defines.演示:>>> from io import IOBase>>> fh = open('/tmp/demo', 'w')>>> isinstance(fh, IOBase)True>>> isinstance(object(), IOBase)False 这篇关于Python 3.3.2检查对象是否为文件类型的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！