code: def _norm(x):
      xs = tree_leaves(x)
      return jnp.sqrt(sum(map(_vdot_real_part, xs, xs)))
  
imports: from functools import partial
  import operator
  import numpy
  import jax
  import jax.numpy
  from jax import device_put
  from jax import lax
  from jax import scipy
  from jax.tree_util import tree_leaves, tree_map, tree_structure, tree_reduce, Partial
  from jax._src import dtypes
  from jax._src.lax import lax
  from jax._src.util import safe_map
label_desc: Use image node_id 4 for calling a global function with example usage: _norm(x) and returns: jnp