code: def check_coverage_file(file_name):
      try:
          conn = sqlite3.connect(file_name)
          tracers = list(conn.execute("SELECT * FROM tracer"))
          if len(tracers) < 1:
              raise ValueError("File containing no tracers")
      except Exception as exc:  # noqa: E722
          logger.warning(
              "Failed to resolve coverage file %s due to error %r",
              file_name,
              exc,
          )
          os.unlink(file_name)
  
imports: import glob
  import logging
  import os
  import sqlite3
label_desc: Use image node_id 1 for calling a global function with example usage: check_coverage_file(file_name) without return types