code: def _make_reducer(py_binop, init_val):
      """Make a reducer function given a Python binop and an initial value."""
      # It's tempting to use np.ufunc.reduce (even with a ufunc generated by
      # np.frompyfunc(py_binop)), but this may not agree with custom init_val.
      # We make an attempt to uncover an underlying numpy ufunc (which might be
      # wrapped by autograd or lax) and check its identity against init_val.
      monoid_record = _monoids.get(getattr(py_binop, "__name__"))
      if monoid_record:
          reducer, monoid_identity = monoid_record
          if init_val == monoid_identity(dtypes.result_type(init_val)):
              return reducer
      return _reducer_from_pyfunc(py_binop, init_val)
  
imports: import builtins
  import collections
  import itertools
  import numpy
  import opt_einsum
  import scipy.special
  from jax._src import dtypes
  from jax._src import util
label_desc: Use image node_id 42 for calling a global function with example usage: _make_reducer(py_binop, init_val) and returns: _reducer_from_pyfunc, reducer