Python对文件、文件夹的操作主要是os模块,下列操作命令正确的是()。
A. path = "F:/image/data/",b = os.path.join(path,"train"),输出结果是: "F:/image/data/train"
B. path = "F:/image/data",b = os.path.join(path,"/train"),输出结果是: "F:/image/data/train"
C. path = "F:/image/data/",b = os.join(path,"train"),输出结果是: "F:/image/data/train"
D. path = "F:/image/data",b = os.join(path,"/train"),输出结果是: "F:/image/data/train"