code: def main(args=None):
      from fontTools import configLogger
  
      if args is None:
          args = sys.argv[1:]
  
      # configure the library logger (for >= WARNING)
      configLogger()
      # comment this out to enable debug messages from logger
      # log.setLevel(logging.DEBUG)
  
      if len(args) < 1:
          print(
              "usage: fonttools varLib.plot source.designspace",
              file=sys.stderr,
          )
          print("  or")
          print(
              "usage: fonttools varLib.plot location1 location2 ...",
              file=sys.stderr,
          )
          print("  or")
          print(
              "usage: fonttools varLib.plot location1=value1 location2=value2 ...",
              file=sys.stderr,
          )
          sys.exit(1)
  
      fig = pyplot.figure()
      fig.set_tight_layout(True)
  
      if len(args) == 1 and args[0].endswith(".designspace"):
          doc = DesignSpaceDocument()
          doc.read(args[0])
          plotDocument(doc, fig)
      else:
          axes = [chr(c) for c in range(ord("A"), ord("Z") + 1)]
          if "=" not in args[0]:
              locs = [
                  dict(zip(axes, (float(v) for v in s.split(","))))
                  for s in args
              ]
              plotLocations(locs, fig)
          else:
              locations = []
              masterValues = []
              for arg in args:
                  loc, v = arg.split("=")
                  locations.append(
                      dict(
                          zip(axes, (float(v) for v in loc.split(",")))
                      )
                  )
                  masterValues.append(float(v))
              model = VariationModel(
                  locations, axes[: len(locations[0])]
              )
              plotModelFromMasters(model, masterValues, fig)
  
      pyplot.show()
  
file_path: catboost/contrib/python/fonttools/fontTools/varLib/plot.py
imports: from fontTools.varLib.models import VariationModel, supportScalar
  from fontTools.designspaceLib import DesignSpaceDocument
  from matplotlib import pyplot
  from mpl_toolkits.mplot3d import axes3d
  from itertools import cycle
  import math
  import logging
  import sys
label_desc: Use image node_id 10 for calling a global function with example usage: main(args) without return types