code: def _field_template(field, precision):
      return {
          MMFile.FIELD_REAL: "%%.%ie\n" % precision,
          MMFile.FIELD_INTEGER: "%i\n",
          MMFile.FIELD_UNSIGNED: "%u\n",
          MMFile.FIELD_COMPLEX: "%%.%ie %%.%ie\n"
          % (precision, precision),
      }.get(field, None)
  
imports: import os
  import numpy
  from numpy import asarray, real, imag, conj, zeros, ndarray, concatenate, ones, can_cast
  from scipy.sparse import coo_matrix, issparse
label_desc: Use image node_id 16 for calling the MMFile obj's underlying member method code with example usage: obj._field_template(field, precision) and returns: dict