code: def unzip():
      import tarfile
  
      os.chdir(conda_prefix + "/blazingsql-testing-files/")
      tar = tarfile.open("data.tar.gz", "r:gz")
      tar.extractall()
      tar.close()
  
imports: from blazingsql import BlazingContext
  from blazingsql import DataType, S3EncryptionType
  import numpy
  import pandas
  import os
  import subprocess
  import sys
  from EndToEndTests import tpchQueries
label_desc: Use image node_id 4 for calling a global function with example usage: unzip() without return types