code: def test_short_format_converters(self):
      def conv(v):
          return v.astype("m8[ns]")
  
      assert Timedelta("10") == np.timedelta64(10, "ns")
      assert Timedelta("10ns") == np.timedelta64(10, "ns")
      assert Timedelta("100") == np.timedelta64(100, "ns")
      assert Timedelta("100ns") == np.timedelta64(100, "ns")
  
      assert Timedelta("1000") == np.timedelta64(1000, "ns")
      assert Timedelta("1000ns") == np.timedelta64(1000, "ns")
      assert Timedelta("1000NS") == np.timedelta64(1000, "ns")
  
      assert Timedelta("10us") == np.timedelta64(10000, "ns")
      assert Timedelta("100us") == np.timedelta64(100000, "ns")
      assert Timedelta("1000us") == np.timedelta64(1000000, "ns")
      assert Timedelta("1000Us") == np.timedelta64(1000000, "ns")
      assert Timedelta("1000uS") == np.timedelta64(1000000, "ns")
  
      assert Timedelta("1ms") == np.timedelta64(1000000, "ns")
      assert Timedelta("10ms") == np.timedelta64(10000000, "ns")
      assert Timedelta("100ms") == np.timedelta64(100000000, "ns")
      assert Timedelta("1000ms") == np.timedelta64(1000000000, "ns")
  
      assert Timedelta("-1s") == -np.timedelta64(1000000000, "ns")
      assert Timedelta("1s") == np.timedelta64(1000000000, "ns")
      assert Timedelta("10s") == np.timedelta64(10000000000, "ns")
      assert Timedelta("100s") == np.timedelta64(100000000000, "ns")
      assert Timedelta("1000s") == np.timedelta64(1000000000000, "ns")
  
      assert Timedelta("1d") == conv(np.timedelta64(1, "D"))
      assert Timedelta("-1d") == -conv(np.timedelta64(1, "D"))
      assert Timedelta("1D") == conv(np.timedelta64(1, "D"))
      assert Timedelta("10D") == conv(np.timedelta64(10, "D"))
      assert Timedelta("100D") == conv(np.timedelta64(100, "D"))
      assert Timedelta("1000D") == conv(np.timedelta64(1000, "D"))
      assert Timedelta("10000D") == conv(np.timedelta64(10000, "D"))
  
      # space
      assert Timedelta(" 10000D ") == conv(np.timedelta64(10000, "D"))
      assert Timedelta(" - 10000D ") == -conv(
          np.timedelta64(10000, "D")
      )
  
      # invalid
      msg = "invalid unit abbreviation"
      with pytest.raises(ValueError, match=msg):
          Timedelta("1foo")
      msg = "unit abbreviation w/o a number"
      with pytest.raises(ValueError, match=msg):
          Timedelta("foo")
  
imports: from datetime import timedelta
  import sys
  from hypothesis import given, strategies
  import numpy
  import pytest
  from pandas._libs import lib
  from pandas._libs.tslibs import NaT, iNaT
  from pandas._libs.tslibs.dtypes import NpyDatetimeUnit
  from pandas.errors import OutOfBoundsTimedelta
  from pandas import Timedelta, to_timedelta
  import pandas._testing
label_desc: Use image node_id 11 for calling the TestTimedeltas obj's underlying member method code with example usage: obj.test_short_format_converters() and returns: v