为什么os.path.abspath()获取的不是真实路径

Question

当我使用os.path.abspath()获取文件绝对路径的时候，为什么总是得到像"workspace"+"filename"这样的路径？
importos
dir="E:/Videos"
forfinos.listdir(dir):
print(os.path.abspath(f))
输出是：
Python3.5.2(v3.5.2:4def2a2901a5,Jun252016,22:01:18)[MSCv.190032bit(Intel)]onwin32
Type"copyright","credits"or"license()"formoreinformation.
>>>
====================RESTART:E:/Workspace/Python/Test.py====================
E:\Workspace\Python\13.gif
E:\Workspace\Python\b0020dgz88t.p401.1.mp4
E:\Workspace\Python\c0021dj07u4.p401.1.mp4
E:\Workspace\Python\n0021jtr5c6.p401.1.mp4
E:\Workspace\Python\o0019ba3fy0.p401.1.mp4
E:\Workspace\Python\x0021k863rf.p401.1.mp4
E:\Workspace\Python\z0015vpyqkv.p402.1.mp4
>>>