code: def __init__(self, source_file):
      super().__init__()
      self.source_file = source_file
  
imports: import os
  from coverage.plugin import CoveragePlugin, FileTracer, FileReporter
  from coverage.files import canonical_filename
label_desc: Use image node_id 1 to create a new CythonFileTracer object from inherited base classes: FileTracer with example: obj = CythonFileTracer(source_file)