code: def setup_module():
      global FILEPATH_DIX, STREAMLINE, STREAMLINES
      try:
          FILEPATH_DIX, _, _ = get_fnames("gold_standard_tracks")
      except (HTTPError, URLError) as e:
          FILEPATH_DIX, STREAMLINE, STREAMLINES = None, None, None
          error_msg = f'"Tests Data failed to download." Reason: {e}'
          pytest.skip(error_msg, allow_module_level=True)
          return
  
      STREAMLINE = np.array(
          [
              [82.20181274, 91.36505891, 43.15737152],
              [82.38442231, 91.79336548, 43.87036514],
              [82.48710632, 92.27861023, 44.56298065],
              [82.53310394, 92.78545381, 45.24635315],
              [82.53793335, 93.26902008, 45.94785309],
              [82.48797607, 93.75003815, 46.64939880],
              [82.35533142, 94.25181581, 47.32533264],
              [82.15484619, 94.76634216, 47.97451019],
              [81.90982819, 95.28792572, 48.60244371],
              [81.63336945, 95.78153229, 49.23971176],
              [81.35479736, 96.24868011, 49.89558792],
              [81.08713531, 96.69807434, 50.56812668],
              [80.81504822, 97.14285278, 51.24193192],
              [80.52591705, 97.56719971, 51.92168427],
              [80.26599884, 97.98269653, 52.61848068],
              [80.04635621, 98.38131714, 53.33855821],
              [79.84691621, 98.77052307, 54.06955338],
              [79.57667542, 99.13599396, 54.78985596],
              [79.23351288, 99.43207551, 55.51065063],
              [78.84815979, 99.64141846, 56.24016571],
              [78.47383881, 99.77347565, 56.99299241],
              [78.12837219, 99.81330872, 57.76969528],
              [77.80438995, 99.85082245, 58.55574799],
              [77.49439240, 99.88065338, 59.34777069],
              [77.21414185, 99.85343933, 60.15090561],
              [76.96416473, 99.82772827, 60.96406937],
              [76.74712372, 99.80519104, 61.78676605],
              [76.52263641, 99.79122162, 62.60765076],
              [76.03757477, 100.08692169, 63.24152374],
              [75.44867706, 100.35265351, 63.79513168],
              [74.78033447, 100.57255554, 64.27278901],
              [74.11605835, 100.77330781, 64.76428986],
              [73.51222992, 100.98779297, 65.32373047],
              [72.97387695, 101.23387146, 65.93502045],
              [72.47355652, 101.49151611, 66.57343292],
              [71.99834442, 101.72480774, 67.23979950],
              [71.56909181, 101.98665619, 67.92664337],
              [71.18083191, 102.29483795, 68.61888123],
              [70.81879425, 102.63343048, 69.31127167],
              [70.47422791, 102.98672485, 70.00532532],
              [70.10092926, 103.28502655, 70.70999908],
              [69.69512177, 103.51667023, 71.42147064],
              [69.27423096, 103.71351624, 72.13452911],
              [68.91260529, 103.81676483, 72.89796448],
              [68.60788727, 103.81982422, 73.69258118],
              [68.34162903, 103.76619720, 74.49915314],
              [68.08542633, 103.70635223, 75.30856323],
              [67.83590698, 103.60187531, 76.11553955],
              [67.56822968, 103.44821930, 76.90870667],
              [67.28399658, 103.25878906, 77.68825531],
              [67.00117493, 103.03740692, 78.45989227],
              [66.72718048, 102.80329895, 79.23099518],
              [66.46197511, 102.54130554, 79.99622345],
              [66.20803833, 102.22305298, 80.74387360],
              [65.96872711, 101.88980865, 81.48987579],
              [65.72864532, 101.59316254, 82.25085449],
              [65.47808075, 101.33383942, 83.02194214],
              [65.21841431, 101.11295319, 83.80186462],
              [64.95678711, 100.94080353, 84.59326935],
              [64.71759033, 100.82022095, 85.40114594],
              [64.48053741, 100.73490143, 86.21411896],
              [64.24304199, 100.65074158, 87.02709198],
              [64.01773834, 100.55318451, 87.84204865],
              [63.83801651, 100.41996765, 88.66333008],
              [63.70982361, 100.25119019, 89.48779297],
              [63.60707855, 100.06730652, 90.31262207],
              [63.46164322, 99.91001892, 91.13648224],
              [63.26287842, 99.78648376, 91.95485687],
              [63.03713226, 99.68377686, 92.76905823],
              [62.81192398, 99.56619263, 93.58140564],
              [62.57145309, 99.42708588, 94.38592529],
              [62.32259369, 99.25592804, 95.18167114],
              [62.07497787, 99.05770111, 95.97154236],
              [61.82253647, 98.83877563, 96.75438690],
              [61.59536743, 98.59293365, 97.53706360],
              [61.46530151, 98.30503845, 98.32772827],
              [61.39904785, 97.97928619, 99.11172485],
              [61.33279419, 97.65353394, 99.89572906],
              [61.26067352, 97.30914307, 100.67123413],
              [61.19459534, 96.96743011, 101.44847107],
              [61.19580461, 96.63417053, 102.23215485],
              [61.26572037, 96.29887391, 103.01185608],
              [61.39840698, 95.96297455, 103.78307343],
              [61.57207871, 95.64262391, 104.55268097],
              [61.78163528, 95.35540771, 105.32629395],
              [62.06700134, 95.09746552, 106.08564758],
              [62.39427185, 94.85724641, 106.83369446],
              [62.74076462, 94.62278748, 107.57482147],
              [63.11461639, 94.40107727, 108.30641937],
              [63.53397751, 94.20418549, 109.02002716],
              [64.00019836, 94.03809357, 109.71183777],
              [64.43580627, 93.87523651, 110.42416382],
              [64.84857941, 93.69993591, 111.14715576],
              [65.26740265, 93.51858521, 111.86515808],
              [65.69511414, 93.36718751, 112.58474731],
              [66.10470581, 93.22719574, 113.31711578],
              [66.45891571, 93.06028748, 114.07256317],
              [66.78582001, 92.90560913, 114.84281921],
              [67.11138916, 92.79004669, 115.62040711],
              [67.44729614, 92.75711823, 116.40135193],
              [67.75688171, 92.98265076, 117.16111755],
              [68.02041626, 93.28012848, 117.91371155],
              [68.25725555, 93.53466797, 118.69052124],
              [68.46047974, 93.63263702, 119.51107788],
              [68.62039948, 93.62007141, 120.34690094],
              [68.76782227, 93.56475067, 121.18331909],
              [68.90222168, 93.46326447, 122.01765442],
              [68.99872589, 93.30039978, 122.84759521],
              [69.04119873, 93.05428314, 123.66156769],
              [69.05086517, 92.74394989, 124.45450592],
              [69.02742004, 92.40427399, 125.23509979],
              [68.95466614, 92.09059143, 126.02339935],
              [68.84975433, 91.79674531, 126.81564331],
              [68.72673798, 91.53726196, 127.61715698],
              [68.60685731, 91.30300141, 128.42681885],
              [68.50636292, 91.12481689, 129.25317383],
              [68.39311218, 91.01572418, 130.08976746],
              [68.25946808, 90.94654083, 130.92756653],
          ],
          dtype=np.float32,
      )
  
      STREAMLINES = Streamlines(
          [
              STREAMLINE[[0, 10]],
              STREAMLINE,
              STREAMLINE[::2],
              STREAMLINE[::3],
              STREAMLINE[::5],
              STREAMLINE[::6],
          ]
      )
  
imports: import os
  from tempfile import TemporaryDirectory
  from urllib.error import URLError, HTTPError
  from dipy.data import get_fnames
  from dipy.io.streamline import load_tractogram, save_tractogram, load_trk, save_trk
  from dipy.io.stateful_tractogram import Space, StatefulTractogram
  from dipy.io.utils import create_nifti_header
  from dipy.io.vtk import save_vtk_streamlines, load_vtk_streamlines
  from dipy.tracking.streamline import Streamlines
  import numpy
  import numpy.testing
  import pytest
  from dipy.utils.optpkg import optional_package
label_desc: Use image node_id 1 for calling a global function with example usage: setup_module() without return types