diff --git a/quidel_covidtest/delphi_quidel_covidtest/backfill.py b/quidel_covidtest/delphi_quidel_covidtest/backfill.py
index 814c9635c..a7591c284 100644
--- a/quidel_covidtest/delphi_quidel_covidtest/backfill.py
+++ b/quidel_covidtest/delphi_quidel_covidtest/backfill.py
@@ -81,7 +81,7 @@ def store_backfill_file(df, _end_date, backfill_dir, logger):
     try:
         backfilldata.to_parquet(path, index=False)
         logger.info("Stored source data in parquet", filename=filename)
-    except Exception as e:
+    except Exception: # pylint: disable=W0703
         logger.info("Failed to store source data in parquet")
     return path
 
@@ -105,6 +105,7 @@ def merge_existing_backfill_files(backfill_dir, backfill_file, issue_date, logge
     new_files = glob.glob(backfill_dir + "/quidel_covidtest_*")
 
     def get_file_with_date(files) -> Union[str, None]:
+        # pylint: disable=R1716
         for filename in files:
             # need to only match files with 6 digits for merged files
             pattern = re.findall(r"_(\d{6,6})\.parquet", filename)
@@ -113,6 +114,7 @@ def get_file_with_date(files) -> Union[str, None]:
                 end_date = (file_month + timedelta(days=32)).replace(day=1)
                 if issue_date >= file_month and issue_date < end_date:
                     return filename
+        # pylint: enable=R1716
         return ""
 
     file_name = get_file_with_date(new_files)
@@ -121,7 +123,8 @@ def get_file_with_date(files) -> Union[str, None]:
         logger.info("Issue date has no matching merged files", issue_date=issue_date.strftime("%Y-%m-%d"))
         return
 
-    logger.info("Adding missing date to merged file", issue_date=issue_date, filename=backfill_file, merged_filename=file_name)
+    logger.info("Adding missing date to merged file", issue_date=issue_date,
+        filename=backfill_file, merged_filename=file_name)
 
     # Start to merge files
     merge_file = f"{file_name.split('.')[0]}_after_merge.parquet"
@@ -133,8 +136,7 @@ def get_file_with_date(files) -> Union[str, None]:
         merged_df.to_parquet(merge_file, index=False)
         os.remove(file_name)
         os.rename(merge_file, file_name)
-    # pylint: disable=W0703:
-    except Exception as e:
+    except Exception as e: # pylint: disable=W0703
         os.remove(merge_file)
         logger.error(e)
     return
@@ -175,7 +177,7 @@ def get_date(file_link):
         return
 
     # Start to merge files
-    logger.info(f"Merging files", start_date=date_list[0], end_date=date_list[-1])
+    logger.info("Merging files", start_date=date_list[0], end_date=date_list[-1])
     pdList = []
     for fn in new_files:
         df = pd.read_parquet(fn, engine='pyarrow')
diff --git a/quidel_covidtest/delphi_quidel_covidtest/constants.py b/quidel_covidtest/delphi_quidel_covidtest/constants.py
index 0bc2cff98..6caf51863 100644
--- a/quidel_covidtest/delphi_quidel_covidtest/constants.py
+++ b/quidel_covidtest/delphi_quidel_covidtest/constants.py
@@ -53,4 +53,3 @@
 ]
 
 FULL_BKFILL_START_DATE = datetime(2020, 5, 26)
-
diff --git a/quidel_covidtest/delphi_quidel_covidtest/patch.py b/quidel_covidtest/delphi_quidel_covidtest/patch.py
index 4a8e54269..9b5dd1ee8 100644
--- a/quidel_covidtest/delphi_quidel_covidtest/patch.py
+++ b/quidel_covidtest/delphi_quidel_covidtest/patch.py
@@ -20,10 +20,8 @@
 It will generate data for that range of issue dates, and store them in batch issue format:
 [name-of-patch]/issue_[issue-date]/quidel_covidtest/actual_data_file.csv
 """
-import time
 from datetime import datetime, timedelta
 from os import makedirs
-from pathlib import Path
 
 from delphi_utils import get_structured_logger, read_params