code: def load(filename, loader=None, implicit_tuple=True, env={}, schema=None):
    
    with open(filename, 'r') as f:
      return loads(f.read(),
                   filename=filename,
                   loader=loader,
                   implicit_tuple=implicit_tuple,
                   env=env,
                   schema=schema)
docs: Load and evaluate a GCL expression from a file.