some missing fixes...

- for some reason they only showed up on PY38

stix2/test/v20/test_indicator.py

@@ -29,7 +29,7 @@ EXPECTED_INDICATOR_REPR = "Indicator(" + " ".join(
     pattern="[file:hashes.MD5 = 'd41d8cd98f00b204e9800998ecf8427e']",
     valid_from='1970-01-01T00:00:01Z',
     labels=['malicious-activity']
-""".split()
+""".split(),
 ) + ")"
 
 

stix2/test/v21/test_indicator.py

@@ -31,7 +31,7 @@ EXPECTED_INDICATOR_REPR = "Indicator(" + " ".join(
     pattern_type='stix',
     pattern_version='2.1',
     valid_from='1970-01-01T00:00:01Z'
-""".split()
+""".split(),
 ) + ")"
 
 

stix2/test/v21/test_location.py

@@ -27,7 +27,7 @@ EXPECTED_LOCATION_1_REPR = "Location(" + " ".join(
     created='2016-04-06T20:03:00.000Z',
     modified='2016-04-06T20:03:00.000Z',
     latitude=48.8566,
-    longitude=2.3522""".split()
+    longitude=2.3522""".split(),
 ) + ")"
 
 EXPECTED_LOCATION_2 = """{
@@ -47,7 +47,7 @@ EXPECTED_LOCATION_2_REPR = "Location(" + " ".join(
     id='location--a6e9345f-5a15-4c29-8bb3-7dcc5d168d64',
     created='2016-04-06T20:03:00.000Z',
     modified='2016-04-06T20:03:00.000Z',
-    region='north-america'""".split()
+    region='north-america'""".split(),
 ) + ")"