code: def test_radd():
      # (left, right) : (float, Stream)
      s1 = 1
      s2 = Stream.source([1, 2, 3, 4, 5, 6], dtype="float")
  
      w = (s1 + s2).rename("w")
  
      assert_op([w], [2, 3, 4, 5, 6, 7])
  
file_path: tensortrade/tests/tensortrade/unit/feed/api/float/test_operations.py
imports: import pandas
  from tensortrade.feed import Stream
  from tests.utils.ops import assert_op
label_desc: Use image node_id 2 for calling a global function with example usage: test_radd() without return types