parameters: (a, b)
return_statement: return b in a
docstring: Same as b in a (note reversed operands).
docstring_summary: Same as b in a (note reversed operands).
docstring_tokens: Same as b in a ( note reversed operands ) .
function: def contains(a, b):
      "Same as b in a (note reversed operands)."
      return b in a
function_tokens: def contains ( a , b ) : return b in a