title: Google Cloud Storage - Python check files by date (unzip gz files)
body: <p>I would like to randomly check how much the unzipped files from google cloud storage weigh. I want to check them by date.  So I have project = project_test
  folder = folder_test
  and in the folder are gz files with creation date.
  I would like to pull random files from a particular date and unpack them.
  I know how to access the bucket using python (list_blobs), but I don't know how to access the folder and select the files by date?</p>