Fix up flake8 errors

Author: gordonwatts

tests/servicex_did_finder_lib/test_util_uri.py

@@ -67,8 +67,12 @@ def test_uri_with_other_params():
 
 def test_uri_rucio():
     'Make sure a uri with a scope in it works'
-    r = parse_did_uri('mc16_13TeV:mc16_13TeV.361106.PowhegPythia8EvtGen_AZNLOCTEQ6L1_Zee.deriv.DAOD_PHYS.e3601_e5984_s3126_s3136_r10724_r10726_p4164?files=20')
+    r = parse_did_uri('mc16_13TeV:mc16_13TeV.361106.PowhegPythia8EvtGen_'
+                      'AZNLOCTEQ6L1_Zee.deriv.DAOD_PHYS.e3601_e5984_s3126'
+                      '_s3136_r10724_r10726_p4164?files=20')
 
-    assert r.did == "mc16_13TeV:mc16_13TeV.361106.PowhegPythia8EvtGen_AZNLOCTEQ6L1_Zee.deriv.DAOD_PHYS.e3601_e5984_s3126_s3136_r10724_r10726_p4164"
+    assert r.did == ("mc16_13TeV:mc16_13TeV.361106.PowhegPythia8EvtGen_"
+                     "AZNLOCTEQ6L1_Zee.deriv.DAOD_PHYS.e3601_e5984_s3126_"
+                     "s3136_r10724_r10726_p4164")
     assert r.get_mode == "all"
     assert r.file_count == 20