fixed up a few issues found from linter

pa_job_manager.py

@@ -12,6 +12,7 @@
 ###
 
 ### SQLALCHEMY IMPORTS ###
+# pylint: disable=no-member
 
 from sqlalchemy.ext.declarative import declarative_base
 from sqlalchemy import Column, Integer, String, Sequence, Float, ForeignKey, DateTime, LargeBinary, Boolean
@@ -37,7 +38,7 @@ import hashlib
 import exifread
 import base64
 import numpy
-import cv2
+from cv2 import cv2
 import socket
 import threading
 import io
@@ -507,7 +508,7 @@ def GetDateFromFile(file, stat):
         print(f"trying exif read of {file}")
         f = open(file, 'rb')
         tags = exifread.process_file(f)
-        date_str, time_str = str(tags["EXIF DateTimeOriginal"]).split(" ")
+        date_str, _ = str(tags["EXIF DateTimeOriginal"]).split(" ")
         print(date_str)
         year, month, day = date_str.split(":")
         year=int(year)
@@ -868,7 +869,7 @@ def RemoveDups(job):
     dup_cnt=0
     for jex in job.extra:
         if 'kfid-' in jex.name:
-            pfx, which = jex.name.split('-')
+            _, which = jex.name.split('-')
             hash=[jex.value for jex in job.extra if jex.name == f"kfhash-{which}"][0]
             AddLogForJob(job, f"deleting duplicate files with hash: {hash} but keeping file with DB id={jex.value}" )
             files=session.query(Entry).join(File).filter(File.hash==hash).all()
@@ -892,7 +893,7 @@ def RemoveDups(job):
                     dup_cnt += 1
 
         if 'kdid-' in jex.name:
-            pfx, which = jex.name.split('-')
+            _, which = jex.name.split('-')
             hashes=[jex.value for jex in job.extra if jex.name == f"kdhash-{which}"][0]
             keeping=jex.value
             tmp=session.query(Dir).filter(Dir.eid==keeping).first()