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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 get_sketch(self, sketch_id):
 """Get information on the specified sketch. Args: sketch_id (int):
 ID of sketch Returns: dict: Dictionary of sketch information Raises: ValueError: Sketch is inaccessible """

    resource_url = '{0:s}/sketches/{1:d}/'.format(self.api_base_url, sketch_id)
    response = self.session.get(resource_url)
    response_dict = response.json()
    try:
      response_dict['objects']
    except KeyError:
      raise ValueError('Sketch does not exist or you have no access')
    return response_dict