code: def one_line(long_str):
      """Make maybe mutli-line `long_str` into one long line"""
      return " ".join(line.strip() for line in long_str.splitlines())
  
imports: import re
  import warnings
  from collections import OrderedDict
  from copy import deepcopy
  from io import StringIO
  from locale import getpreferredencoding
  import numpy
  from .affines import apply_affine, dot_reduce, from_matvec
  from .eulerangles import euler2mat
  from .fileslice import fileslice, strided_scalar
  from .nifti1 import unit_codes
  from .openers import ImageOpener
  from .spatialimages import SpatialHeader, SpatialImage
  from .volumeutils import Recoder, array_from_file
label_desc: Use image node_id 7 for calling a global function with example usage: one_line(long_str) and returns: str