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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def update(self, other):
 """Adds the contents of other to this ClasspathProducts."""

    if self._pants_workdir != other._pants_workdir:
      raise ValueError('Other ClasspathProducts from a different pants workdir {}'.format(other._pants_workdir))
    for target, products in other._classpaths._products_by_target.items():
      self._classpaths.add_for_target(target, products)
    for target, products in other._excludes._products_by_target.items():
      self._excludes.add_for_target(target, products)