diff --git a/platipy/cli/tcia_download.py b/platipy/cli/tcia_download.py
index 6ed734f1..b53f09af 100644
--- a/platipy/cli/tcia_download.py
+++ b/platipy/cli/tcia_download.py
@@ -15,11 +15,10 @@
 # limitations under the License.
 
 import sys
+import logging
 
 import click
-import logging
 
-logger = logging.getLogger(__name__)
 
 from platipy.dicom.download.tcia import (
     get_collections,
@@ -28,6 +27,7 @@
     fetch_data,
 )
 
+logger = logging.getLogger(__name__)
 
 logger.remove()
 logger.add(sys.stderr, level="DEBUG")
diff --git a/platipy/dicom/io/nifti_to_rtstruct.py b/platipy/dicom/io/nifti_to_rtstruct.py
index efae383f..c87375fc 100644
--- a/platipy/dicom/io/nifti_to_rtstruct.py
+++ b/platipy/dicom/io/nifti_to_rtstruct.py
@@ -19,11 +19,12 @@
 import SimpleITK as sitk
 import numpy as np
 import logging
-logger = logging.getLogger(__name__)
 from matplotlib import cm
 
 from rt_utils import RTStructBuilder
 
+logger = logging.getLogger(__name__)
+
 
 def convert_nifti(dcm_path, mask_input, output_file, color_map=cm.get_cmap("rainbow")):
     """Convert a set of masks to a DICOM RTStruct object.
diff --git a/platipy/imaging/dose/dvh.py b/platipy/imaging/dose/dvh.py
index dfd733e3..8b397879 100644
--- a/platipy/imaging/dose/dvh.py
+++ b/platipy/imaging/dose/dvh.py
@@ -49,8 +49,8 @@ def calculate_dvh(dose_grid, label, bins=1001):
     values = np.cumsum(counts[::-1])[::-1]
     if np.all(values == 0):
         return bins, values
-    else:
-        values = values / values.max()
+
+    values = values / values.max()
 
     return bins, values
 
@@ -106,7 +106,7 @@ def calculate_dvh_for_labels(dose_grid, labels, bin_width=0.1, max_dose=None):
                 "cc": cc,
                 "mean": mean_dose,
             },
-            **{d: c for d, c in zip(bins, values)},
+            **dict(zip(bins, values)),
         }
 
         dvh.append(entry)
diff --git a/platipy/imaging/projects/cardiac/service.py b/platipy/imaging/projects/cardiac/service.py
index c80a68d5..f4f458b2 100644
--- a/platipy/imaging/projects/cardiac/service.py
+++ b/platipy/imaging/projects/cardiac/service.py
@@ -17,6 +17,7 @@
 
 import SimpleITK as sitk
 import logging
+
 logger = logging.getLogger(__name__)
 
 # import pydicom
@@ -42,7 +43,7 @@ def cardiac_service(data_objects, working_dir, settings):
 
     output_objects = []
     for data_object in data_objects:
-        logger.info("Running on data object: " + data_object.path)
+        logger.info("Running on data object: %s", data_object.path)
 
         # Read the image series
         load_path = data_object.path
@@ -110,7 +111,8 @@ def cardiac_structure_guided_service(data_objects, working_dir, settings):
         if len(data_object.children) == 0:
             logger.error(
                 "Wholeheart structure needed for structure guided cardiac "
-                "segmentation, skipping %s", data_object.id
+                "segmentation, skipping %s",
+                data_object.id,
             )
             continue
 
diff --git a/platipy/imaging/projects/nnunet/run.py b/platipy/imaging/projects/nnunet/run.py
index dec54186..9044fe56 100644
--- a/platipy/imaging/projects/nnunet/run.py
+++ b/platipy/imaging/projects/nnunet/run.py
@@ -1,6 +1,7 @@
 
 import os
 import tempfile
+import shutil
 import urllib.request
 from pathlib import Path
 import logging