Can't find train.csv, validate.csv and test.csv

[xuezhongcai]

Hi, I am playing with "Quick Start", and got this error message:

FileNotFoundError: [Errno 2] No such file or directory: 'data_directory\train.csv'

I am not able to manually find train.csv, validate.csv and test.csv. Please help me where I can find these files. Thank you