use full name rather than abbreviation
@@ -180,8 +180,8 @@ class QuantumInstance:
# setup others
# TODO: allow an external way to overwrite the setting circuit cache temporally
- # when either setup cache via env variable or constructor, the optimization level will be
- # change to 0 to assure cache works.
+ # when either setup cache via environment variable or constructor,
+ # the optimization level will be change to 0 to assure cache works.
circuit_cache = None
if os.environ.get('QISKIT_AQUA_CIRCUIT_CACHE', False) or circuit_caching:
if optimization_level is None or optimization_level == 0:
