code: def __init__(self, input, output, params, wildcards, config):
      if len(output) != 1:
          raise ValueError(
              "More than one output file specified for template_engine rule."
          )
      if len(input) != 1:
          if "template" not in input.keys():
              raise ValueError(
                  "More than one input file specified for template engine rule, but no "
                  "input file named as 'template'."
              )
          else:
              self.input_file = input.template
      else:
          self.input_file = input[0]
  
      self.input = input
      self.output_file = output[0]
      self.params = params
      self.wildcards = wildcards
      self.config = config
  
imports: from abc import ABC, abstractmethod
  from snakemake.exceptions import WorkflowError
label_desc: Use image node_id 1 to create a new TemplateRenderer object from inherited base classes: ABC with example: obj = TemplateRenderer(input, output, params, wildcards, config)