Replaced exit with sys.exit

Author: jsiverio

PDNAScrubber.py

@@ -12,6 +12,6 @@ def main():
         scrubber.scrub()
     else:
         print("Usage: PDNAScrubber.py <path to JSON file>")
-        exit(1)
+        sys.exit(1)
 
 main()

Scrubber.py

@@ -28,7 +28,7 @@ def _openJson(self):
             f = open(self.jsonSourcePath, "r",encoding="utf-8")
         except OSError as e:
             print(e.strerror)
-            exit(1)
+            sys.exit(1)
 
         data = json.load(f)
         f.close()
@@ -40,7 +40,7 @@ def _openJson(self):
                 raise ValueError("Invalid JSON file")
         except ValueError as err:
             print(str(err))
-            exit(1)
+            sys.exit(1)
 
 
     def scrub(self):
@@ -70,7 +70,7 @@ def scrub(self):
 
         except OSError as e:
             print(e.strerror)
-            exit(1)
+            sys.exit(1)
 
     def _fileInfo(self, data,fileCount):
         '''_summary_    = "This function is used to display the file details of the JSON file"'''