class_docstr: Download Aminer Dataset from Amazon S3 bucket.
code: def __init__(self, path):
      self.url = "https://data.dgl.ai/dataset/aminer.zip"
  
      if not os.path.exists(os.path.join(path, "aminer.txt")):
          print("File not found. Downloading from", self.url)
          self._download_and_extract(path, "aminer.zip")
      self.fn = os.path.join(path, "aminer.txt")
  
file_path: dgl/examples/pytorch/metapath2vec/download.py
imports: import os
  import torch
  import torch.nn
  import tqdm
label_desc: Use image node_id 1 to create a new AminerDataset object from inherited base classes: object with example: obj = AminerDataset(path)