code: def test_Quantity_definition():
      q = Quantity("s10", abbrev="sabbr")
      q.set_global_relative_scale_factor(10, second)
      u = Quantity("u", abbrev="dam")
      u.set_global_relative_scale_factor(10, meter)
      km = Quantity("km")
      km.set_global_relative_scale_factor(kilo, meter)
      v = Quantity("u")
      v.set_global_relative_scale_factor(5 * kilo, meter)
  
      assert q.scale_factor == 10
      assert q.dimension == time
      assert q.abbrev == Symbol("sabbr")
  
      assert u.dimension == length
      assert u.scale_factor == 10
      assert u.abbrev == Symbol("dam")
  
      assert km.scale_factor == 1000
      assert km.func(*km.args) == km
      assert km.func(*km.args).args == km.args
  
      assert v.dimension == length
      assert v.scale_factor == 5000
  
imports: import warnings
  from sympy.core.add import Add
  from sympy.core.function import Function, diff
  from sympy.core.numbers import Number, Rational
  from sympy.core.singleton import S
  from sympy.core.symbol import Symbol, symbols
  from sympy.functions.elementary.complexes import Abs
  from sympy.functions.elementary.exponential import exp, log
  from sympy.functions.elementary.miscellaneous import sqrt
  from sympy.functions.elementary.trigonometric import sin
  from sympy.integrals.integrals import integrate
  from sympy.physics.units import amount_of_substance, area, convert_to, find_unit, volume, kilometer, joule, molar_gas_constant, vacuum_permittivity, elementary_charge, volt, ohm
  from sympy.physics.units.definitions import amu, au, centimeter, coulomb, day, foot, grams, hour, inch, kg, km, m, meter, millimeter, minute, quart, s, second, speed_of_light, bit, byte, kibibyte, mebibyte, gibibyte, tebibyte, pebibyte, exbibyte, kilogram, gravitational_constant, electron_rest_mass
  from sympy.physics.units.definitions.dimension_definitions import Dimension, charge, length, time, temperature, pressure, energy, mass
  from sympy.physics.units.prefixes import PREFIXES, kilo
  from sympy.physics.units.quantities import PhysicalConstant, Quantity
  from sympy.physics.units.systems import SI
  from sympy.testing.pytest import raises
label_desc: Use image node_id 4 for calling a global function with example usage: test_Quantity_definition() without return types