code: def test_registry_mpl_resets():
      # Check that Matplotlib converters are properly reset (see issue #27481)
      code = (
          "import matplotlib.units as units; "
          "import matplotlib.dates as mdates; "
          "n_conv = len(units.registry); "
          "import pandas as pd; "
          "pd.plotting.register_matplotlib_converters(); "
          "pd.plotting.deregister_matplotlib_converters(); "
          "assert len(units.registry) == n_conv"
      )
      call = [sys.executable, "-c", code]
      subprocess.check_output(call)
  
imports: from datetime import date, datetime
  import subprocess
  import sys
  import numpy
  import pytest
  import pandas._config.config
  from pandas._libs.tslibs import to_offset
  from pandas import Index, Period, PeriodIndex, Series, Timestamp, arrays, date_range
  import pandas._testing
  from pandas.plotting import deregister_matplotlib_converters, register_matplotlib_converters
  from pandas.tseries.offsets import Day, Micro, Milli, Second
label_desc: Use image node_id 1 for calling a global function with example usage: test_registry_mpl_resets() without return types