code: def draw_circle(img, center, radius, value):
      x, y = numpy.mgrid[0 : img.shape[0], 0 : img.shape[1]]
      distance = numpy.sqrt(
          (x - center[0]) * (x - center[0])
          + (y - center[1]) * (y - center[1])
      )
      img[distance <= radius] = value
  
imports: import io
  import os
  import centrosome.threshold
  import numpy
  import pytest
  import scipy.ndimage
  import cellprofiler_core.image
  import cellprofiler_core.measurement
  from cellprofiler_core.constants.measurement import FF_COUNT, COLTYPE_INTEGER, FF_FINAL_THRESHOLD, COLTYPE_FLOAT, FF_ORIG_THRESHOLD, M_NUMBER_OBJECT_NUMBER, M_LOCATION_CENTER_X, M_LOCATION_CENTER_Y, M_LOCATION_CENTER_Z, FF_SUM_OF_ENTROPIES, FF_WEIGHTED_VARIANCE
  from cellprofiler_core.constants.module._identify import TS_GLOBAL, TS_ADAPTIVE, O_TWO_CLASS, O_FOREGROUND, O_THREE_CLASS, O_BACKGROUND, RB_MODE, RB_SD, RB_MEAN, RB_MEDIAN, RB_MAD, TS_MANUAL, TS_MEASUREMENT
  from cellprofiler_core.image import VanillaImage
  import cellprofiler.modules.identifyprimaryobjects
  import cellprofiler.modules.threshold
  import cellprofiler_core.object
  import cellprofiler_core.pipeline
  import cellprofiler_core.setting
  import cellprofiler_core.workspace
  import tests.frontend
  import tests.frontend.modules
label_desc: Use image node_id 44 for calling a global function with example usage: draw_circle(img, center, radius, value) without return types