code: def stmts_from_path(path, model, stmts):
      
      path_stmts = []
      for path_rule, sign in path:
          for rule in model.rules:
              if rule.name == path_rule:
                  stmt = stmt_from_rule(path_rule, model, stmts)
                  assert stmt is not None
                  path_stmts.append(stmt)
      return path_stmts
docs: Return source Statements corresponding to a path in a model.
  
      Parameters
      ----------
      path : list[tuple[str, int]]
          A list of tuples where the first element of the tuple is the
          name of a rule, and the second is the associated polarity along
          a path.
      model : pysb.core.Model
          A PySB model which contains the rules along the path.
      stmts : list[indra.statements.Statement]
          A list of INDRA Statements from which the model was assembled.
  
      Returns
      -------
      path_stmts : list[indra.statements.Statement]
          The Statements from which the rules along the path were obtained.