Returns the subdirectory in `userdata` which acts as the root of the
  user-specific filesystem in Steam (aka all user-specific files are stored
  under this directory)

def user_specific_data_directory(user_context):
  """Returns the subdirectory in `userdata` which acts as the root of the
  user-specific filesystem in Steam (aka all user-specific files are stored
  under this directory)"""
  return  os.path.join(
    user_context.steam.userdata_directory,
    user_context.user_id
  )