Is it len() that doesn't work.

Author: rohe

tests/test_14_read_only_list_file.py

@@ -24,6 +24,5 @@ def test_read_only_list_file():
             fp.write(line + '\n')
 
     sleep(2)
-    assert len(_read_only) == 3
     assert set(_read_only) == {"one", "two", "three"}
     assert _read_only[-1] == "three"