refactored splitTrainVal and added multiOS path support

[itasli]

No description provided.

[andyjiang1116]

@itasli could you explain your PR ? I'm confused about what you have changed?

[itasli]

Hey @andyjpaddle , basically I changed this :

imagePath = os.path.join(dataAbsPath, "{}\\{}".format(args.recImageDirName, imageName))

to this :

image_path = os.path.join(data_abs_path, args.recImageDirName, image_name)

I don't really remember well but i had some issue using the split function on either windows or ubuntu and had to modifiy the code to make it word, other changes are just refactoring

[shiyutang]

Hi, Could you please push your changes to the dygraph branch.

[itasli]

Hi, Could you please push your changes to the dygraph branch.

here it is GH-11069

[shiyutang]

This PR has been merged into develop. Therefore close it.