message: Check whether tensorflow_io is installed before loading
diff: @@ -34,8 +34,12 @@ tfio_lib <- NULL
  }
  )
  + if (!reticulate::py_module_available("tensorflow_io")) {
  + message(paste0("tensorflow_io Python module is not available. ",
  + "Please install it and try load it via library(tfio) again."))
  + } else {
  tfio_lib <<- import("tensorflow_io", delay_load = delay_load)
  -
  + }
  }
  check_tensorflow_version <- function(displayed_warning) {
  