code: def get_backend_name():
      return os.environ.get("GEOMSTATS_BACKEND", "numpy")
  
file_path: geomstats/geomstats/_backend/__init__.py
imports: import importlib
  import logging
  import os
  import sys
  import types
  import geomstats._backend._common
label_desc: Use image node_id 1 for calling a global function with example usage: get_backend_name() and returns: os