code: def enable_backends():
      """Enables the backends."""
      if DEBUG:
          print("sys.meta_path: ", sys.meta_path)
  
      # We try to be robust to reloading this module, and remove the old instance of
      # the Finder from sys.meta_path.
      found = False
      i = 0
      for i, finder in enumerate(sys.meta_path):
          if hasattr(finder, "_FUN_MC_FINDER"):
              found = True
              break
  
      if found:
          sys.meta_path[i] = Finder()
      else:
          # We insert it at the beginning. This enables us to intercept the dynamic
          # modules before any other finder tries and (mistakenly) succeeds in somehow
          # handling them. This does force us to be careful about letting all the
          # regular modules to be handled by the regular finders via the early
          # returns.
          sys.meta_path.insert(0, Finder())
  
file_path: probability/spinoffs/fun_mc/fun_mc/backends/rewrite.py
imports: import importlib
  import importlib.abc
  import importlib.machinery
  import importlib.util
  import re
  import sys
label_desc: Use image node_id 3 for calling a global function with example usage: enable_backends() without return types