diff --git a/phasecalculator/analysis/fgipanalysis.py b/phasecalculator/analysis/fgipanalysis.py
index 47f739fc67caebb08a820f897360112fb17c5178..fb1ebec73ed27247ec4e0ca108b3b0af08956e7b 100755
--- a/phasecalculator/analysis/fgipanalysis.py
+++ b/phasecalculator/analysis/fgipanalysis.py
@@ -139,7 +139,9 @@ def create_solvation_plots_from_poly_files(
     plot_outputs = []
     filename_list = []
     directory = kwargs.get("directory", "")
-    frac_occ_inf_dict = solvmapgen.fractionaloccupancycalculator.read_fractional_occupancy_information(frac_occ_filename)
+    frac_occ_inf_dict = solvmapgen.fractionaloccupancycalculator.read_fractional_occupancy_information(
+        frac_occ_filename
+    )
     for polynomial_filename in polynomial_filename_list:
         LOGGER.info("polynomial_filename:")
         LOGGER.info(polynomial_filename)
diff --git a/phasecalculator/analysis/vleanalysis.py b/phasecalculator/analysis/vleanalysis.py
index a92e978bf6556862d80a7a7cbcbb187c2f7980e6..f521c539dbcfec5d6b6e53c94cb10964c78f9d1a 100755
--- a/phasecalculator/analysis/vleanalysis.py
+++ b/phasecalculator/analysis/vleanalysis.py
@@ -28,6 +28,7 @@ logging.basicConfig()
 LOGGER = logging.getLogger(__name__)
 LOGGER.setLevel(logging.WARN)
 
+
 def process_vle_data(phase_filename, csv_filename):
     """Process phase XML and write to csv file.
 
@@ -45,7 +46,8 @@ def process_vle_data(phase_filename, csv_filename):
     """
     mixture_dict = read_data_from_mixtures(phase_filename)
     mixture_info_list = convert_mixture_container_dict_to_list(mixture_dict)
-    write_data_to_csv(mixture_info_list,csv_filename)
+    write_data_to_csv(mixture_info_list, csv_filename)
+
 
 def write_data_to_csv(mixture_info_list, csv_filename):
     """Write data to csv file.
@@ -63,11 +65,17 @@ def write_data_to_csv(mixture_info_list, csv_filename):
 
     """
     with open(csv_filename, "w") as outfile:
-        csvwriter = csv.writer(outfile, delimiter="\t",lineterminator="\n")
-        header_row = ['solvent_id', 'temperature', "phase type",'concentrations[name, value]']
+        csvwriter = csv.writer(outfile, delimiter="\t", lineterminator="\n")
+        header_row = [
+            "solvent_id",
+            "temperature",
+            "phase type",
+            "concentrations[name, value]",
+        ]
         csvwriter.writerow(header_row)
         csvwriter.writerows(mixture_info_list)
 
+
 def convert_mixture_container_dict_to_list(mixture_container_dict):
     """Convert mixture dictionary to list of lists
 
@@ -87,8 +95,8 @@ def convert_mixture_container_dict_to_list(mixture_container_dict):
         for phase_id, phase_dict in mixture.items():
             phase_list_container.append(convert_phase_dict_to_list(phase_dict))
     return phase_list_container
-    
-    
+
+
 def convert_phase_dict_to_list(phase_dict):
     """Convert phase dictionary to list for output.
 
@@ -103,18 +111,18 @@ def convert_phase_dict_to_list(phase_dict):
         List of information for output to file.
 
     """
-    phase_list =  [
+    phase_list = [
         phase_dict["solvent_id"],
         phase_dict["temperature_value"],
         phase_dict["phase_type"],
-        ]
-    
-    for inchikey, mol_dict in phase_dict['concentrations'].items():
-        phase_list += [inchikey, "{:.10f}".format(mol_dict["concentration_value"]) ]
-    
+    ]
+
+    for inchikey, mol_dict in phase_dict["concentrations"].items():
+        phase_list += [inchikey, "{:.10f}".format(mol_dict["concentration_value"])]
+
     return phase_list
-    
-    
+
+
 def read_data_from_mixtures(vle_filename):
     """Read Mixture XML.
 
@@ -129,4 +137,4 @@ def read_data_from_mixtures(vle_filename):
         Summary of phase concentration information.
 
     """
-    return mixparser.parse_mixture_file(vle_filename)
\ No newline at end of file
+    return mixparser.parse_mixture_file(vle_filename)
diff --git a/phasecalculator/classes/outputinformation.py b/phasecalculator/classes/outputinformation.py
index 92888b18a101f888f1bec2195b2499e571fe7ec6..d1a66117b36dd2fe64fe53debf7fbb68c3b0a6eb 100755
--- a/phasecalculator/classes/outputinformation.py
+++ b/phasecalculator/classes/outputinformation.py
@@ -104,9 +104,10 @@ class OutputInformation(object):
 
         """
         fgip_output = OutputInformation.parse_fgip_output(output_xml)
-        similarity_output, similarity_output_type = OutputInformation.parse_similarity_output(
-            output_xml
-        )
+        (
+            similarity_output,
+            similarity_output_type,
+        ) = OutputInformation.parse_similarity_output(output_xml)
         vle_output = OutputInformation.parse_vle_output(output_xml)
         return OutputInformation(
             fgip_output, similarity_output, similarity_output_type, vle_output
diff --git a/phasecalculator/classes/phase.py b/phasecalculator/classes/phase.py
index 41ee8f2537c7cc0846425c6f04c352bbafd7483f..4f5cbecf2e1e555d69e2e444c7c07dd9a0b6d18a 100755
--- a/phasecalculator/classes/phase.py
+++ b/phasecalculator/classes/phase.py
@@ -160,7 +160,7 @@ class Phase(object):
         molefraction_total = 0.0
         for mole_frac in self.get_molefractions_by_molecule().values():
             molefraction_total += mole_frac
-        return (abs(1.0-molefraction_total) < 1e-5)
+        return abs(1.0 - molefraction_total) < 1e-5
 
     def write_to_xml(self):
         """Write information to Etree representation of XML.
@@ -203,7 +203,7 @@ class Phase(object):
 
         """
         return [molecule.ssip_file_loc for molecule in self.molecule_list]
-    
+
     def get_name_inchikey_map(self):
         """Get the name inchikey mapping for all molecules in the phases.
 
diff --git a/phasecalculator/classes/phases.py b/phasecalculator/classes/phases.py
index 6b04fed7c68a064ed1185fae9fb22f16f6af00e7..b5cbcb6065c2a265e6b268468dbe091bc69eddf9 100755
--- a/phasecalculator/classes/phases.py
+++ b/phasecalculator/classes/phases.py
@@ -181,7 +181,7 @@ class Phases(object):
         for phase in self.phase_list:
             ssip_file_locations.extend(phase.get_ssip_file_locations())
         return set(ssip_file_locations)
-    
+
     def get_name_inchikey_map(self):
         """Get the name inchikey mapping for all molecules in the phases.
 
@@ -194,4 +194,4 @@ class Phases(object):
         name_inchikey_map = {}
         for phase in self.phase_list:
             name_inchikey_map.update(phase.get_name_inchikey_map())
-        return name_inchikey_map
\ No newline at end of file
+        return name_inchikey_map
diff --git a/phasecalculator/classes/system.py b/phasecalculator/classes/system.py
index a09412c6007221aaeab1555bd936cefecb054074..5242ee26b991d2684a3f82baaaa7b1a4a3352669 100755
--- a/phasecalculator/classes/system.py
+++ b/phasecalculator/classes/system.py
@@ -268,7 +268,7 @@ class System(object):
 
         """
         return self.phases.get_ssip_file_locations()
-    
+
     def get_name_inchikey_map(self):
         """Get the name inchikey mapping for all molecules in the phases.
 
diff --git a/phasecalculator/io/phasecsvconverter.py b/phasecalculator/io/phasecsvconverter.py
index 3430acf865e03e4d8690a728db2876e161c734bd..a46ccb7257e7c2e58b23c508b86279e2e0f1c229 100755
--- a/phasecalculator/io/phasecsvconverter.py
+++ b/phasecalculator/io/phasecsvconverter.py
@@ -37,6 +37,7 @@ NAME_INCHIKEY_MAP = pureinf.get_name_inchikey_mapping()
 INCHIKEY_POLARISED_SSIP_FILE_DICT = pureinf.get_ssip_file_dict()
 INCHIKEY_UNPOLARISED_SSIP_FILE_DICT = pureinf.get_unpolarised_ssip_file_dict()
 
+
 def convert_csv_file_to_phases(csv_filename, unpolarised_ssips):
     """Read CSV file and convert contents to Phases.
 
diff --git a/phasecalculator/phasecalculatorcli.py b/phasecalculator/phasecalculatorcli.py
index 643ca11fbd0d322bb30ccd82c4d0eb0d7b9619ec..6f5dd2e44cce0dea49133550622f6670e01ee428 100755
--- a/phasecalculator/phasecalculatorcli.py
+++ b/phasecalculator/phasecalculatorcli.py
@@ -254,6 +254,7 @@ def run_system_collection(system_collection, **kwargs):
     for system_info in system_collection.system_list:
         phasecrun.run_all_analysis(system_info, **kwargs)
 
+
 def get_acceptable_solvent_names():
     """Get Acceptable solvent names.
 
@@ -265,7 +266,8 @@ def get_acceptable_solvent_names():
     """
     solvent_names = pureinf.get_name_inchikey_mapping().keys()
     return "\n".join(solvent_names)
-    
+
+
 def solvent_names(args):
     """Output solvent names by using a logger.
 
@@ -276,6 +278,7 @@ def solvent_names(args):
     """
     INFO_LOGGER.info("Solvent names:\n%s", get_acceptable_solvent_names())
 
+
 def create_phasecalculator_argparser():
     """Create Argument parser for Phasecalculator module.
 
@@ -296,11 +299,13 @@ similarity and VLE analysis for solvents."""
     subparsers = phase_argparser.add_subparsers(title="commands", dest="command")
 
     calc_description = """Calculation runner based on input System XML."""
-    calc_epilog = textwrap.dedent("""Example Usage:
+    calc_epilog = textwrap.dedent(
+        """Example Usage:
 
 python -m phasecalculator calculate -f systemcollection.xml
 
-Where systemcollection.xml was generated with inpgen. For large phase sets you need to set memreq to match your current hardware limit.""")
+Where systemcollection.xml was generated with inpgen. For large phase sets you need to set memreq to match your current hardware limit."""
+    )
 
     calc_argparser = subparsers.add_parser(
         "calculate",
@@ -326,13 +331,15 @@ Where systemcollection.xml was generated with inpgen. For large phase sets you n
     calc_argparser.set_defaults(func=process_phasecalculator)
 
     inpgen_description = """Input SystemCollection XML generation."""
-    inpgen_epilog = textwrap.dedent("""\
+    inpgen_epilog = textwrap.dedent(
+        """\
   Example usage:
     
     python -m phasecalculator inpgen -p $CONDA_PREFIX/lib/python3.7/site-packages/phasecalculator/test/resources/examplephasecomp.csv -f -j PATH_TO_JAR
 
   Where PATH_TO_JAR is replaced with the SSIP phasetransfer jar file location.
-""")
+"""
+    )
 
     inpgen_argparser = subparsers.add_parser(
         "inpgen",
@@ -372,17 +379,29 @@ Where systemcollection.xml was generated with inpgen. For large phase sets you n
         "-v", "--vle", action="store_true", help="Calculate VLE for input solvents"
     )
     inpgen_argparser.add_argument(
-        "--filename", type=str, default="systemcollection.xml",
+        "--filename",
+        type=str,
+        default="systemcollection.xml",
         help="filename for XML file.",
     )
     ssip_desc = inpgen_argparser.add_mutually_exclusive_group(required=False)
-    ssip_desc.add_argument("--polarised", action="store_false", dest="unpolarised_ssips",
-                           help="Use unpolarised SSIP descriptions in calculations")
-    ssip_desc.add_argument("--unpolarised", action="store_true", dest="unpolarised_ssips",
-                           help="Use polarised SSIP descriptions in calculations")
+    ssip_desc.add_argument(
+        "--polarised",
+        action="store_false",
+        dest="unpolarised_ssips",
+        help="Use unpolarised SSIP descriptions in calculations",
+    )
+    ssip_desc.add_argument(
+        "--unpolarised",
+        action="store_true",
+        dest="unpolarised_ssips",
+        help="Use polarised SSIP descriptions in calculations",
+    )
     inpgen_argparser.set_defaults(func=process_inputgen, unpolarised_ssips=False)
     solvname_description = """Display acceptable solvent molecule names for inclusion in a phases csv file."""
-    solvnames_epilog = "Solvent molecule names:\n" + get_acceptable_solvent_names() + "\n"
+    solvnames_epilog = (
+        "Solvent molecule names:\n" + get_acceptable_solvent_names() + "\n"
+    )
     solvent_nameparser = subparsers.add_parser(
         "solventnames",
         description=solvname_description,
diff --git a/phasecalculator/runners/fgipanalysisrunner.py b/phasecalculator/runners/fgipanalysisrunner.py
index c0cd7ab92480c0f8443c7a31a927b03c62dbeb09..2fd402d82b05c3c54ab20ea40e931cb0a8df2fbb 100755
--- a/phasecalculator/runners/fgipanalysisrunner.py
+++ b/phasecalculator/runners/fgipanalysisrunner.py
@@ -34,7 +34,12 @@ LOGGER.setLevel(logging.WARN)
 
 
 def calc_energies_and_fgips(
-    jar_path, energy_xml_filename, frac_occ_filename, solvent_filename, directory_base, **kwargs
+    jar_path,
+    energy_xml_filename,
+    frac_occ_filename,
+    solvent_filename,
+    directory_base,
+    **kwargs
 ):
     """Run phasetransfer calculation and generate FGIPs for input solvent.
 
@@ -68,8 +73,7 @@ def calc_energies_and_fgips(
     temperature = kwargs.get("temperature", 298.0)
     temperature_unit = kwargs.get("temperature_unit", "KELVIN")
     run_binding_energy_calculation(
-        jar_path, energy_xml_filename, frac_occ_filename,
-        solvent_filename, **kwargs
+        jar_path, energy_xml_filename, frac_occ_filename, solvent_filename, **kwargs
     )
     directory = generate_directory(directory_base, temperature, temperature_unit)
     out_res, polynomial_filename_list = extract_solvents_and_generate_polynomials(
@@ -201,6 +205,5 @@ def run_binding_energy_calculation(
 
     """
     return phaserun.run_phasetransfer_binding_energy(
-        jar_path, output_filename, frac_occ_filename,
-        solvent_filename, **kwargs
+        jar_path, output_filename, frac_occ_filename, solvent_filename, **kwargs
     )
diff --git a/phasecalculator/runners/phasecalculatorrunner.py b/phasecalculator/runners/phasecalculatorrunner.py
index 1fd76f4aaa12f10589d41debddbaed9715065d3f..4d15429f1eefd677e044f07c1ade175dac2d15f8 100755
--- a/phasecalculator/runners/phasecalculatorrunner.py
+++ b/phasecalculator/runners/phasecalculatorrunner.py
@@ -189,12 +189,12 @@ def run_vle_analysis(system_info, phase_filename, **kwargs):
     """
     jar_path = system_info.runtime_information.phasetransfer_jar
     phase_output_filename = create_phase_output_filename(phase_filename)
-    csv_filename = create_phase_summary_filename(system_info.runtime_information.output_dir,
-                                                 phase_filename)
+    csv_filename = create_phase_summary_filename(
+        system_info.runtime_information.output_dir, phase_filename
+    )
     create_output_dir(system_info)
     vlerun.calculate_and_process_vle_data(
-        jar_path, phase_filename, phase_output_filename,
-        csv_filename, **kwargs
+        jar_path, phase_filename, phase_output_filename, csv_filename, **kwargs
     )
 
 
@@ -215,6 +215,7 @@ def create_output_dir(system_info):
     output_path.mkdir(parents=True, exist_ok=True)
     return output_path.as_posix()
 
+
 def create_phase_summary_filename(output_dir, phase_filename):
     """Create phase summary CSV filename.
 
@@ -231,8 +232,11 @@ def create_phase_summary_filename(output_dir, phase_filename):
         CSV filename.
 
     """
-    summary_filename = phase_filename.split("/")[-1].replace(".xml", "calculation_summary.csv")
-    return (pathlib.Path(output_dir) /summary_filename).as_posix()
+    summary_filename = phase_filename.split("/")[-1].replace(
+        ".xml", "calculation_summary.csv"
+    )
+    return (pathlib.Path(output_dir) / summary_filename).as_posix()
+
 
 def create_free_energy_output_filename(solvent_filename):
     """Create free energy filename for solvent file.
@@ -284,6 +288,7 @@ def create_fractional_occupancy_filename(solvent_filename):
     """
     return solvent_filename.replace(".xml", "_fracocc.xml")
 
+
 def create_phase_output_filename(phase_filename):
     """Create phase output filename.
 
diff --git a/phasecalculator/runners/phasetransferrunner.py b/phasecalculator/runners/phasetransferrunner.py
index d339996745a241515d2b6dcb899340d973b43400..a0bd752324f6822d05164127b0d42380b34935af 100755
--- a/phasecalculator/runners/phasetransferrunner.py
+++ b/phasecalculator/runners/phasetransferrunner.py
@@ -264,8 +264,7 @@ def generate_phasetransfer_binding_args(
 
     """
     jar_args = make_java_arguments(jar_path, memory_req=kwargs.pop("memory_req", None))
-    binding_args = ["--energies", "solvationbinding",
-                    "-f", frac_occ_filename ]
+    binding_args = ["--energies", "solvationbinding", "-f", frac_occ_filename]
     solvent_args = generate_solvent_calc_args(
         output_filename, solvent_filename, **kwargs
     )
diff --git a/phasecalculator/runners/phasexmlcreatorrunner.py b/phasecalculator/runners/phasexmlcreatorrunner.py
index c6c4a5cd1085ed8e7d474ad923d72f8322f0e956..1d2cb7a9a88a043fa9e5679b89c934ab164e4e13 100755
--- a/phasecalculator/runners/phasexmlcreatorrunner.py
+++ b/phasecalculator/runners/phasexmlcreatorrunner.py
@@ -55,20 +55,32 @@ def create_phase_and_solvent_files(system_info, filestem="system", **kwargs):
 
     """
     create_scratch_dir(system_info)
-    name_inchikey_map = kwargs.pop("name_inchikey_map", system_info.get_name_inchikey_map())
+    name_inchikey_map = kwargs.pop(
+        "name_inchikey_map", system_info.get_name_inchikey_map()
+    )
     phase_file = None
     solvent_list = None
-    LOGGER.info("System calcs: VLE: %s, FGIP: %s, SIM: %s", system_info.calc_vle(),
-                system_info.calc_fgip(), system_info.calc_similarity())
+    LOGGER.info(
+        "System calcs: VLE: %s, FGIP: %s, SIM: %s",
+        system_info.calc_vle(),
+        system_info.calc_fgip(),
+        system_info.calc_similarity(),
+    )
     if system_info.calc_vle():
-        phase_file = create_phase_file(system_info, filestem + "phase",
-                                       name_inchikey_map=name_inchikey_map,
-                                       **kwargs)
+        phase_file = create_phase_file(
+            system_info,
+            filestem + "phase",
+            name_inchikey_map=name_inchikey_map,
+            **kwargs
+        )
     if system_info.calc_fgip() or system_info.calc_similarity():
         LOGGER.info("Creating solvents")
-        solvent_list = create_solvent_files(system_info, filestem + "solvent",
-                                            name_inchikey_map=name_inchikey_map,
-                                            **kwargs)
+        solvent_list = create_solvent_files(
+            system_info,
+            filestem + "solvent",
+            name_inchikey_map=name_inchikey_map,
+            **kwargs
+        )
     return phase_file, solvent_list
 
 
diff --git a/phasecalculator/runners/vleanalysisrunner.py b/phasecalculator/runners/vleanalysisrunner.py
index 801460a6a7ad9817d55e87a8f9ff05e5680e88ad..0d3a89cc200f70063c8fb0cf8ba28dfff07ee21c 100755
--- a/phasecalculator/runners/vleanalysisrunner.py
+++ b/phasecalculator/runners/vleanalysisrunner.py
@@ -28,7 +28,10 @@ logging.basicConfig()
 LOGGER = logging.getLogger(__name__)
 LOGGER.setLevel(logging.WARN)
 
-def calculate_and_process_vle_data(jar_path, phase_filename, phase_output_filename, csv_filename, **kwargs):
+
+def calculate_and_process_vle_data(
+    jar_path, phase_filename, phase_output_filename, csv_filename, **kwargs
+):
     """Calculate and process VLE data.
 
     Parameters
@@ -76,6 +79,7 @@ def process_vle_data(calculated_phase_filename, csv_filename):
     """
     return vleanalysis.process_vle_data(calculated_phase_filename, csv_filename)
 
+
 def run_vle_calculation(jar_path, phase_filename, output_filename, **kwargs):
     """Run VLE phase calculation.
 
diff --git a/phasecalculator/test/analysistest/fgipanalysis_test.py b/phasecalculator/test/analysistest/fgipanalysis_test.py
index e17048715fca69af19694cf7b6eb27e6e268c54b..a251fdc044fffb94910f844d9bbb1046fb4546f6 100755
--- a/phasecalculator/test/analysistest/fgipanalysis_test.py
+++ b/phasecalculator/test/analysistest/fgipanalysis_test.py
@@ -85,7 +85,10 @@ class FGIPAnalysisTestCase(unittest.TestCase):
     \label{fig:1-butanol0_164528302water0_835471698solvationmap}
 \end{figure}
 """
-        self.frac_occ_inf_dict = fgipanalysis.solvmapgen.fractionaloccupancycalculator.read_fractional_occupancy_information(self.frac_occ_filename)
+        self.frac_occ_inf_dict = fgipanalysis.solvmapgen.fractionaloccupancycalculator.read_fractional_occupancy_information(
+            self.frac_occ_filename
+        )
+
     def tearDown(self):
         """Clean up after tests.
 
@@ -156,7 +159,9 @@ class FGIPAnalysisTestCase(unittest.TestCase):
             8,
         )
         self.assertListEqual([(0, 0)], plot_outputs)
-        self.assertEqual(["1-butanol0.164528302water0.835471698_solv_map.svg"], filenames)
+        self.assertEqual(
+            ["1-butanol0.164528302water0.835471698_solv_map.svg"], filenames
+        )
         self.assertTrue(pathlib.Path(self.matrix_file).is_file())
         self.assertTrue(pathlib.Path(self.solvent_map).is_file())
 
diff --git a/phasecalculator/test/analysistest/vleanalysis_test.py b/phasecalculator/test/analysistest/vleanalysis_test.py
index d58e2692c6afd12c59463fb9c25210caaf9070ab..772265c3c561cc862300adbaf97761268c145665 100755
--- a/phasecalculator/test/analysistest/vleanalysis_test.py
+++ b/phasecalculator/test/analysistest/vleanalysis_test.py
@@ -33,6 +33,7 @@ LOGGER.setLevel(logging.WARN)
 
 class VLEAnalysisTestCase(unittest.TestCase):
     """Test case for VLE analysis methods."""
+
     def setUp(self):
         """Set up environment for tests.
 
@@ -41,7 +42,7 @@ class VLEAnalysisTestCase(unittest.TestCase):
         None.
 
         """
-        self.maxDiff=None
+        self.maxDiff = None
         parent_directory = pathlib.Path(__file__).parents[1]
         self.calculated_phase_file = (
             (parent_directory / "resources" / "expected_phasecalculated.xml")
@@ -53,9 +54,14 @@ class VLEAnalysisTestCase(unittest.TestCase):
             .absolute()
             .as_posix()
         )
-        self.mixture_info_dict = vleanalysis.read_data_from_mixtures(self.calculated_phase_file)
-        self.processed_list = vleanalysis.convert_mixture_container_dict_to_list(self.mixture_info_dict)
+        self.mixture_info_dict = vleanalysis.read_data_from_mixtures(
+            self.calculated_phase_file
+        )
+        self.processed_list = vleanalysis.convert_mixture_container_dict_to_list(
+            self.mixture_info_dict
+        )
         self.output_file = "phase_summary.csv"
+
     def tearDown(self):
         """Clean up after tests.
 
@@ -66,6 +72,7 @@ class VLEAnalysisTestCase(unittest.TestCase):
         """
         if os.path.isfile(self.output_file):
             os.remove(self.output_file)
+
     def test_process_vle_data(self):
         """Test expected file is produced.
 
@@ -80,6 +87,7 @@ class VLEAnalysisTestCase(unittest.TestCase):
             with open(self.expected_phas_csv, "r") as exp_file:
                 expected_contents = exp_file.read()
                 self.assertMultiLineEqual(expected_contents, actual_contents)
+
     def test_write_data_to_csv(self):
         """Test Expected file is produced.
 
@@ -94,6 +102,7 @@ class VLEAnalysisTestCase(unittest.TestCase):
             with open(self.expected_phas_csv, "r") as exp_file:
                 expected_contents = exp_file.read()
                 self.assertMultiLineEqual(expected_contents, actual_contents)
+
     def test_convert_mixture_container_dict_to_list(self):
         """Test expected list created.
 
@@ -102,20 +111,29 @@ class VLEAnalysisTestCase(unittest.TestCase):
         None.
 
         """
-        expected_list = [['1-butanol0.165water0.835298.000KELVIN',
-                         298.0, 'GAS',
-                         'LRHPLDYGYMQRHN-UHFFFAOYSA-N',
-                         '0.0000021914',
-                         'XLYOFNOQVPJJNP-UHFFFAOYSA-N',
-                         '0.0008190888'],
-                         ['1-butanol0.165water0.835298.000KELVIN',
-                          298.0,'CONDENSED',
-                          'LRHPLDYGYMQRHN-UHFFFAOYSA-N',
-                          '4.4440094829',
-                          'XLYOFNOQVPJJNP-UHFFFAOYSA-N',
-                          '30.7036536932']]
+        expected_list = [
+            [
+                "1-butanol0.165water0.835298.000KELVIN",
+                298.0,
+                "GAS",
+                "LRHPLDYGYMQRHN-UHFFFAOYSA-N",
+                "0.0000021914",
+                "XLYOFNOQVPJJNP-UHFFFAOYSA-N",
+                "0.0008190888",
+            ],
+            [
+                "1-butanol0.165water0.835298.000KELVIN",
+                298.0,
+                "CONDENSED",
+                "LRHPLDYGYMQRHN-UHFFFAOYSA-N",
+                "4.4440094829",
+                "XLYOFNOQVPJJNP-UHFFFAOYSA-N",
+                "30.7036536932",
+            ],
+        ]
         actual_list = self.processed_list
         self.assertListEqual(expected_list, actual_list)
+
     def test_convert_phase_dict_to_list(self):
         """Test conversion of phase information.
  
@@ -124,14 +142,22 @@ class VLEAnalysisTestCase(unittest.TestCase):
         None.
 
         """
-        expected_list = ['1-butanol0.165water0.835298.000KELVIN',
-                         298.0, 'GAS',
-                         'LRHPLDYGYMQRHN-UHFFFAOYSA-N',
-                         '0.0000021914',
-                         'XLYOFNOQVPJJNP-UHFFFAOYSA-N',
-                         '0.0008190888']
-        actual_list = vleanalysis.convert_phase_dict_to_list(self.mixture_info_dict['1-butanol0.165water0.835298.000KELVIN']['1-butanol0.165water0.835298.000KELVINGAS'])
+        expected_list = [
+            "1-butanol0.165water0.835298.000KELVIN",
+            298.0,
+            "GAS",
+            "LRHPLDYGYMQRHN-UHFFFAOYSA-N",
+            "0.0000021914",
+            "XLYOFNOQVPJJNP-UHFFFAOYSA-N",
+            "0.0008190888",
+        ]
+        actual_list = vleanalysis.convert_phase_dict_to_list(
+            self.mixture_info_dict["1-butanol0.165water0.835298.000KELVIN"][
+                "1-butanol0.165water0.835298.000KELVINGAS"
+            ]
+        )
         self.assertEqual(expected_list, actual_list)
+
     def test_read_data_from_mixtures(self):
         """Test data is read in as expected.
 
@@ -140,8 +166,42 @@ class VLEAnalysisTestCase(unittest.TestCase):
         None.
 
         """
-        expected_dict = {'1-butanol0.165water0.835298.000KELVIN':{'1-butanol0.165water0.835298.000KELVINGAS': {'phase_type': 'GAS', 'temperature_value': 298.0, 'temperature_unit': 'KELVIN', 'solvent_id': '1-butanol0.165water0.835298.000KELVIN', 'concentrations': {'LRHPLDYGYMQRHN-UHFFFAOYSA-N': {'concentration_value': 2.1914464984900333e-06, 'concentration_unit': 'MOLAR'}, 'XLYOFNOQVPJJNP-UHFFFAOYSA-N': {'concentration_value': 0.0008190888071552708, 'concentration_unit': 'MOLAR'}}},
-                                                                  '1-butanol0.165water0.835298.000KELVINCONDENSED': {'phase_type': 'CONDENSED', 'temperature_value': 298.0, 'temperature_unit': 'KELVIN', 'solvent_id': '1-butanol0.165water0.835298.000KELVIN', 'concentrations': {'LRHPLDYGYMQRHN-UHFFFAOYSA-N': {'concentration_value': 4.444009482942443, 'concentration_unit': 'MOLAR'}, 'XLYOFNOQVPJJNP-UHFFFAOYSA-N': {'concentration_value': 30.70365369323062, 'concentration_unit': 'MOLAR'}}}}}
+        expected_dict = {
+            "1-butanol0.165water0.835298.000KELVIN": {
+                "1-butanol0.165water0.835298.000KELVINGAS": {
+                    "phase_type": "GAS",
+                    "temperature_value": 298.0,
+                    "temperature_unit": "KELVIN",
+                    "solvent_id": "1-butanol0.165water0.835298.000KELVIN",
+                    "concentrations": {
+                        "LRHPLDYGYMQRHN-UHFFFAOYSA-N": {
+                            "concentration_value": 2.1914464984900333e-06,
+                            "concentration_unit": "MOLAR",
+                        },
+                        "XLYOFNOQVPJJNP-UHFFFAOYSA-N": {
+                            "concentration_value": 0.0008190888071552708,
+                            "concentration_unit": "MOLAR",
+                        },
+                    },
+                },
+                "1-butanol0.165water0.835298.000KELVINCONDENSED": {
+                    "phase_type": "CONDENSED",
+                    "temperature_value": 298.0,
+                    "temperature_unit": "KELVIN",
+                    "solvent_id": "1-butanol0.165water0.835298.000KELVIN",
+                    "concentrations": {
+                        "LRHPLDYGYMQRHN-UHFFFAOYSA-N": {
+                            "concentration_value": 4.444009482942443,
+                            "concentration_unit": "MOLAR",
+                        },
+                        "XLYOFNOQVPJJNP-UHFFFAOYSA-N": {
+                            "concentration_value": 30.70365369323062,
+                            "concentration_unit": "MOLAR",
+                        },
+                    },
+                },
+            }
+        }
         actual_dict = self.mixture_info_dict
         LOGGER.debug(actual_dict)
-        self.assertDictEqual(expected_dict, actual_dict)
\ No newline at end of file
+        self.assertDictEqual(expected_dict, actual_dict)
diff --git a/phasecalculator/test/classestest/phase_test.py b/phasecalculator/test/classestest/phase_test.py
index f650ece3c85dec8ceffb58b19013c6ea85aec852..1c52cf3a02f7cede71b02b6e0a92e28bda2b15fa 100755
--- a/phasecalculator/test/classestest/phase_test.py
+++ b/phasecalculator/test/classestest/phase_test.py
@@ -138,6 +138,7 @@ class PhaseTestCase(unittest.TestCase):
         expected_list = [self.molecule.ssip_file_loc]
         actual_list = self.phase.get_ssip_file_locations()
         self.assertListEqual(expected_list, actual_list)
+
     def test_get_name_inchikey_map(self):
         """Test expected name: inchikey mapping is returned.
 
@@ -146,6 +147,6 @@ class PhaseTestCase(unittest.TestCase):
         None.
 
         """
-        expected_dict = {'water': 'XLYOFNOQVPJJNP-UHFFFAOYSA-N'}
+        expected_dict = {"water": "XLYOFNOQVPJJNP-UHFFFAOYSA-N"}
         actual_dict = self.phase.get_name_inchikey_map()
-        self.assertDictEqual(expected_dict, actual_dict)
\ No newline at end of file
+        self.assertDictEqual(expected_dict, actual_dict)
diff --git a/phasecalculator/test/classestest/phases_test.py b/phasecalculator/test/classestest/phases_test.py
index 6eb885040bfef44181bf61712e0259acb0b1b373..260a3fb2e38adb66e2ba24f32bce74a0e685ee16 100755
--- a/phasecalculator/test/classestest/phases_test.py
+++ b/phasecalculator/test/classestest/phases_test.py
@@ -145,6 +145,7 @@ class PhasesTestCase(unittest.TestCase):
         expected_set = {self.molecule.ssip_file_loc}
         actual_set = self.phases.get_ssip_file_locations()
         self.assertSetEqual(expected_set, actual_set)
+
     def test_get_name_inchikey_map(self):
         """Test expected name: inchikey mapping is returned.
 
@@ -153,6 +154,6 @@ class PhasesTestCase(unittest.TestCase):
         None.
 
         """
-        expected_dict = {'water': 'XLYOFNOQVPJJNP-UHFFFAOYSA-N'}
+        expected_dict = {"water": "XLYOFNOQVPJJNP-UHFFFAOYSA-N"}
         actual_dict = self.phases.get_name_inchikey_map()
         self.assertDictEqual(expected_dict, actual_dict)
diff --git a/phasecalculator/test/classestest/system_test.py b/phasecalculator/test/classestest/system_test.py
index e02dbeb7e0d42690cb94964c6fae71209700c78e..05cdc35089fb5a7b0fd2335486219e2322e5df84 100755
--- a/phasecalculator/test/classestest/system_test.py
+++ b/phasecalculator/test/classestest/system_test.py
@@ -222,7 +222,7 @@ class SystemTestCase(unittest.TestCase):
         expected_set = {self.molecule.ssip_file_loc}
         actual_set = self.system.get_ssip_file_locations()
         self.assertSetEqual(expected_set, actual_set)
-    
+
     def test_get_name_inchikey_map(self):
         """Test expected name: inchikey mapping is returned.
 
@@ -231,7 +231,7 @@ class SystemTestCase(unittest.TestCase):
         None.
 
         """
-        expected_dict = {'water': 'XLYOFNOQVPJJNP-UHFFFAOYSA-N'}
+        expected_dict = {"water": "XLYOFNOQVPJJNP-UHFFFAOYSA-N"}
         actual_dict = self.system.get_name_inchikey_map()
         self.assertDictEqual(expected_dict, actual_dict)
 
diff --git a/phasecalculator/test/iotest/phasecsvconverter_test.py b/phasecalculator/test/iotest/phasecsvconverter_test.py
index e24798f4f3f495867e104385b1c8aed10504be14..26561972c696b1858c51fdf9dc43ac23a5050b6e 100755
--- a/phasecalculator/test/iotest/phasecsvconverter_test.py
+++ b/phasecalculator/test/iotest/phasecsvconverter_test.py
@@ -77,7 +77,7 @@ class PhaseCSVConverterTestCase(unittest.TestCase):
         None.
 
         """
-        actual_phases = phasecsv.convert_csv_file_to_phases(self.example_csv,False)
+        actual_phases = phasecsv.convert_csv_file_to_phases(self.example_csv, False)
         self.assertEqual(self.phases, actual_phases)
 
     def test_read_csv_file(self):
diff --git a/phasecalculator/test/iotest/phasetransferxmlcreator_test.py b/phasecalculator/test/iotest/phasetransferxmlcreator_test.py
index d5757df143d5778374feb9c212dab9e8bc5b3bc4..f982f18ba743511e10c3e137a6b4de9497d0e54c 100755
--- a/phasecalculator/test/iotest/phasetransferxmlcreator_test.py
+++ b/phasecalculator/test/iotest/phasetransferxmlcreator_test.py
@@ -277,8 +277,12 @@ class PhasetransferXMLCreatorTestCase(unittest.TestCase):
         actual_info_list = self.solvent_info_list
         self.assertEqual(1, len(actual_info_list))
         actual_information = actual_info_list[0]
-        self.assertEqual("1-butanol0.164528302water0.835471698", actual_information["solvent_name"])
-        self.assertEqual("1-butanol0.164528302water0.835471698", actual_information["solvent_id"])
+        self.assertEqual(
+            "1-butanol0.164528302water0.835471698", actual_information["solvent_name"]
+        )
+        self.assertEqual(
+            "1-butanol0.164528302water0.835471698", actual_information["solvent_id"]
+        )
         actual_list = actual_information["ssip_info_list"]
         for entry, information_dict in enumerate(actual_list):
             with self.subTest(entry=entry):
diff --git a/phasecalculator/test/runnerstest/fgipanalysisrunner_test.py b/phasecalculator/test/runnerstest/fgipanalysisrunner_test.py
index e305745b8c803235e9e64294db72a1d611a96b11..9a8cf182061ec5a776df9f9eaa4bb7398f5cfdf0 100755
--- a/phasecalculator/test/runnerstest/fgipanalysisrunner_test.py
+++ b/phasecalculator/test/runnerstest/fgipanalysisrunner_test.py
@@ -66,7 +66,7 @@ class FGIPAnalysisRunnerTestCase(unittest.TestCase):
             (self.parent_directory / "resources/expected_solvent_fracocc.xml")
             .absolute()
             .as_posix()
-        ) 
+        )
         self.example_jar = (
             (self.parent_directory / "resources" / "example.jar").absolute().as_posix()
         )
@@ -79,15 +79,24 @@ class FGIPAnalysisRunnerTestCase(unittest.TestCase):
         self.directory = fgiprunner.generate_directory(
             self.directory_base, 298.0, "KELVIN"
         )
-        self.out_res, self.filename_list = fgiprunner.extract_solvents_and_generate_polynomials(
+        (
+            self.out_res,
+            self.filename_list,
+        ) = fgiprunner.extract_solvents_and_generate_polynomials(
             self.solvent_filename, self.binding_output_filename, self.directory
         )
-        self.energy_xmlfile = "fgip/298_0K/1-butanol0.164528302water0.835471698binding.xml"
+        self.energy_xmlfile = (
+            "fgip/298_0K/1-butanol0.164528302water0.835471698binding.xml"
+        )
         self.poly_file = (
             "fgip/298_0K/1-butanol0.164528302water0.835471698binding_poly_fit_split.csv"
         )
-        self.matrix_file = "fgip/298_0K/1-butanol0.164528302water0.835471698_solv_map.csv"
-        self.solvent_map = "fgip/298_0K/1-butanol0.164528302water0.835471698_solv_map.svg"
+        self.matrix_file = (
+            "fgip/298_0K/1-butanol0.164528302water0.835471698_solv_map.csv"
+        )
+        self.solvent_map = (
+            "fgip/298_0K/1-butanol0.164528302water0.835471698_solv_map.svg"
+        )
         self.fgip_file = "fgip/298_0K/1-butanol0_164528302water0_835471698_FGIP.svg"
         self.expected_latex = r"""
 \begin{figure}[H]
@@ -149,6 +158,7 @@ class FGIPAnalysisRunnerTestCase(unittest.TestCase):
 
         """
         self.assertTrue(pathlib.Path(self.directory).is_dir())
+
     @pytest.mark.xfail
     def test_run_fgip_analysis(self):
         """Test FGIP analysis is run.
@@ -208,7 +218,9 @@ class FGIPAnalysisRunnerTestCase(unittest.TestCase):
             "298.0",
         ]
         process = fgiprunner.run_binding_energy_calculation(
-            self.example_jar, self.binding_output_filename,
-            self.frac_occ_filename, self.solvent_filename
+            self.example_jar,
+            self.binding_output_filename,
+            self.frac_occ_filename,
+            self.solvent_filename,
         )
         self.assertListEqual(expected_args, process.args)
diff --git a/phasecalculator/test/runnerstest/phasecalculatorrunner_test.py b/phasecalculator/test/runnerstest/phasecalculatorrunner_test.py
index 760805a03aaf2947a7ccb70fc44c3dcbcd3e49a9..192b3b5cf0c9d42aa5b910dc0312465cba5423ae 100755
--- a/phasecalculator/test/runnerstest/phasecalculatorrunner_test.py
+++ b/phasecalculator/test/runnerstest/phasecalculatorrunner_test.py
@@ -137,8 +137,12 @@ class PhaseCalculatorRunnerTestCase(unittest.TestCase):
         self.poly_file = (
             "fgip/298_0K/1-butanol0.1645water0.8355binding_poly_fit_split.csv"
         )
-        self.matrix_file = "fgip/298_0K/1-butanol0.164528302water0.835471698_solv_map.csv"
-        self.solvent_map = "fgip/298_0K/1-butanol0.164528302water0.835471698_solv_map.svg"
+        self.matrix_file = (
+            "fgip/298_0K/1-butanol0.164528302water0.835471698_solv_map.csv"
+        )
+        self.solvent_map = (
+            "fgip/298_0K/1-butanol0.164528302water0.835471698_solv_map.svg"
+        )
         self.fgip_file = "fgip/298_0K/1-butanol0_164528302water0_835471698_FGIP.svg"
         self.similarity_file = "fgip/similaritymatrix.csv"
         self.expected_latex = r"""
@@ -183,8 +187,11 @@ class PhaseCalculatorRunnerTestCase(unittest.TestCase):
             self.expected_binding_file, "scratch/systemsolvent_298.0Kbinding.xml"
         )
         shutil.copyfile(self.expected_free_file, "scratch/systemsolvent_298.0Kfree.xml")
-        shutil.copyfile(self.frac_occ_filename, "scratch/systemsolvent_298.0K_fracocc.xml")
+        shutil.copyfile(
+            self.frac_occ_filename, "scratch/systemsolvent_298.0K_fracocc.xml"
+        )
         shutil.copyfile(self.expected_phase_output_filename, self.phase_out_file)
+
     @pytest.mark.xfail
     def test_run_all_analysis(self):
         """Test
@@ -271,8 +278,11 @@ class PhaseCalculatorRunnerTestCase(unittest.TestCase):
 
         """
         expected_filename = "output/systemphasecalculation_summary.csv"
-        actual_filename = pcalcrun.create_phase_summary_filename("output", "scratch/systemphase.xml")
+        actual_filename = pcalcrun.create_phase_summary_filename(
+            "output", "scratch/systemphase.xml"
+        )
         self.assertEqual(expected_filename, actual_filename)
+
     def test_create_free_energy_output_filename(self):
         """Test expected filename produced.
 
@@ -310,8 +320,11 @@ class PhaseCalculatorRunnerTestCase(unittest.TestCase):
 
         """
         expected_filename = "solvent_filename_fracocc.xml"
-        actual_filename = pcalcrun.create_fractional_occupancy_filename("solvent_filename.xml")
+        actual_filename = pcalcrun.create_fractional_occupancy_filename(
+            "solvent_filename.xml"
+        )
         self.assertEqual(expected_filename, actual_filename)
+
     def test_create_phase_output_filename(self):
         """Test expected filename produced.
 
@@ -332,9 +345,10 @@ class PhaseCalculatorRunnerTestCase(unittest.TestCase):
         None.
 
         """
-        phase_filename, solvent_filename_list = pcalcrun.create_phase_and_solvent_xml_files(
-            self.system
-        )
+        (
+            phase_filename,
+            solvent_filename_list,
+        ) = pcalcrun.create_phase_and_solvent_xml_files(self.system)
         self.assertEqual("scratch/systemphase.xml", phase_filename)
         with open(phase_filename, "r") as act_file:
             actual_contents = act_file.read()
diff --git a/phasecalculator/test/runnerstest/phasetransferrunner_test.py b/phasecalculator/test/runnerstest/phasetransferrunner_test.py
index d4020b3dd8705a5c086687074fe06128f873740e..5333c2f8d7423df07a246f6b6e71411779cdf8de 100755
--- a/phasecalculator/test/runnerstest/phasetransferrunner_test.py
+++ b/phasecalculator/test/runnerstest/phasetransferrunner_test.py
@@ -49,7 +49,7 @@ class PhasetransferRunnerTestCase(unittest.TestCase):
         self.r.replace(
             "phasecalculator.runners.phasetransferrunner.run_calculation", self.Popen
         )
-        
+
         self.addCleanup(self.r.restore)
         parent_directory = pathlib.Path(__file__).parents[1]
         self.example_jar = (
@@ -158,8 +158,10 @@ class PhasetransferRunnerTestCase(unittest.TestCase):
             "298.0",
         ]
         process = phaserun.run_phasetransfer_binding_energy(
-            self.example_jar, self.binding_output_filename,
-            self.frac_occ_filename, self.solvent_filename
+            self.example_jar,
+            self.binding_output_filename,
+            self.frac_occ_filename,
+            self.solvent_filename,
         )
         self.assertListEqual(expected_args, process.args)
 
@@ -299,8 +301,10 @@ class PhasetransferRunnerTestCase(unittest.TestCase):
             "298.0",
         ]
         actual_args = phaserun.generate_phasetransfer_binding_args(
-            self.example_jar, self.binding_output_filename,
-            self.frac_occ_filename, self.solvent_filename
+            self.example_jar,
+            self.binding_output_filename,
+            self.frac_occ_filename,
+            self.solvent_filename,
         )
         self.assertListEqual(expected_args, actual_args)
 
diff --git a/phasecalculator/test/runnerstest/phasexmlcreatorrunner_test.py b/phasecalculator/test/runnerstest/phasexmlcreatorrunner_test.py
index 717bd019256eb976856fa2008a85f368b63c38f5..9613834cbd5afd60a0c7205b5b333c1f30418e3a 100755
--- a/phasecalculator/test/runnerstest/phasexmlcreatorrunner_test.py
+++ b/phasecalculator/test/runnerstest/phasexmlcreatorrunner_test.py
@@ -114,9 +114,10 @@ class PhaseXMLCreatorRunnerTestCase(unittest.TestCase):
         None.
 
         """
-        phase_filename, solvent_filename_list = phasecreaterun.create_phase_and_solvent_files(
-            self.system
-        )
+        (
+            phase_filename,
+            solvent_filename_list,
+        ) = phasecreaterun.create_phase_and_solvent_files(self.system)
         self.assertEqual("scratch/systemphase.xml", phase_filename)
         with open(phase_filename, "r") as act_file:
             actual_contents = act_file.read()
diff --git a/phasecalculator/test/runnerstest/similarityanalysisrunner_test.py b/phasecalculator/test/runnerstest/similarityanalysisrunner_test.py
index 452ccf7b07ec23134f2b49a5331554521be9f13a..0a3b649eb5599cf3b5cc00c8f307f69b89eae425 100755
--- a/phasecalculator/test/runnerstest/similarityanalysisrunner_test.py
+++ b/phasecalculator/test/runnerstest/similarityanalysisrunner_test.py
@@ -76,8 +76,13 @@ class SimilarityAnalysisRunnerTestCase(unittest.TestCase):
         )
         self.directory = simrun.generate_directory("sim", 298.0, "KELVIN")
         self.energy_xmlfile = "sim/298_0K/1-butanol0.164528302water0.835471698free.xml"
-        self.poly_file = "sim/298_0K/1-butanol0.164528302water0.835471698free_poly_fit_split.csv"
-        self.out_res, self.filename_list = simrun.extract_solvents_and_generate_polynomials(
+        self.poly_file = (
+            "sim/298_0K/1-butanol0.164528302water0.835471698free_poly_fit_split.csv"
+        )
+        (
+            self.out_res,
+            self.filename_list,
+        ) = simrun.extract_solvents_and_generate_polynomials(
             self.solvent_filename, self.free_output_filename, self.directory
         )
         self.solv_energy_dict = {
diff --git a/phasecalculator/test/runnerstest/vleanalysisrunner_test.py b/phasecalculator/test/runnerstest/vleanalysisrunner_test.py
index b5b0e1608da7214cafdb05314b462ab6d2422b95..b5d1522a5cb994af26f00ca71c5140debc3a58ae 100755
--- a/phasecalculator/test/runnerstest/vleanalysisrunner_test.py
+++ b/phasecalculator/test/runnerstest/vleanalysisrunner_test.py
@@ -72,6 +72,7 @@ class VLEAnalysisRunnerTestCase(unittest.TestCase):
             .as_posix()
         )
         self.output_file = "phase_summary.csv"
+
     def tearDown(self):
         """Clean up after tests.
 
@@ -82,6 +83,7 @@ class VLEAnalysisRunnerTestCase(unittest.TestCase):
         """
         if os.path.isfile(self.output_file):
             os.remove(self.output_file)
+
     def test_calculate_and_process_vle_data(self):
         """Test expected output produced.
 
@@ -90,15 +92,18 @@ class VLEAnalysisRunnerTestCase(unittest.TestCase):
         None.
 
         """
-        vlerun.calculate_and_process_vle_data(self.example_jar,
-                                              self.phase_filename,
-                                              self.phase_output_filename,
-                                              self.output_file)
+        vlerun.calculate_and_process_vle_data(
+            self.example_jar,
+            self.phase_filename,
+            self.phase_output_filename,
+            self.output_file,
+        )
         with open(self.output_file, "r") as act_file:
             actual_contents = act_file.read()
             with open(self.expected_phas_csv, "r") as exp_file:
                 expected_contents = exp_file.read()
                 self.assertMultiLineEqual(expected_contents, actual_contents)
+
     def test_process_vle_data(self):
         """Test expected output produced.
 
@@ -113,6 +118,7 @@ class VLEAnalysisRunnerTestCase(unittest.TestCase):
             with open(self.expected_phas_csv, "r") as exp_file:
                 expected_contents = exp_file.read()
                 self.assertMultiLineEqual(expected_contents, actual_contents)
+
     def test_run_vle_calculation(self):
         """Test expected system call is made.