code: def download_all(data_home=None, replace=False):
      """
      Downloads all the example datasets to the data directory specified by
      ``get_data_home``. This function ensures that all datasets are available
      for use with the examples.
      """
      for _, meta in DATASETS.items():
          download_data(
              meta["url"],
              meta["signature"],
              data_home=data_home,
              replace=replace,
          )
  
      print(
          "Downloaded {} datasets to {}".format(
              len(DATASETS), get_data_home(data_home)
          )
      )
  
file_path: yellowbrick/yellowbrick/download.py
imports: import os
  import argparse
  from yellowbrick.datasets import get_data_home
  from yellowbrick.datasets.loaders import DATASETS
  from yellowbrick.datasets.download import download_data
  from yellowbrick.datasets.path import cleanup_dataset
label_desc: Use image node_id 1 for calling a global function with example usage: download_all(data_home, replace) without return types