code: def _check_groups(problem):
      """Check if there is more than 1 group."""
      groups = problem.get("groups")
      if not groups:
          return False
  
      if len(set(groups)) == 1:
          return False
      return groups
  
imports: import pkgutil
  import csv
  import numpy
label_desc: Use image node_id 3 for calling a global function with example usage: _check_groups(problem) and returns: groups, False, False