refactor: added type hints to csv2cve (#1636)

Author: gaurav879

cve_bin_tool/csv2cve.py

@@ -1,8 +1,10 @@
 # Copyright (C) 2021 Intel Corporation
 # SPDX-License-Identifier: GPL-3.0-or-later
 
+import logging
 import os
 import sys
+from typing import List, Optional
 
 from cve_bin_tool import cli
 from cve_bin_tool.error_handler import ErrorHandler, InsufficientArgs, excepthook
@@ -11,14 +13,14 @@
 sys.excepthook = excepthook
 
 
-def main(argv=None):
-    logger = LOGGER.getChild("CSV2CVE")
-    argv = argv or sys.argv
+def main(argv: Optional[List[str]] = None):
+    logger: logging.Logger = LOGGER.getChild("CSV2CVE")
+    argv: List[str] = argv or sys.argv
     if len(argv) < 2:
         with ErrorHandler(logger=logger):
             raise InsufficientArgs("csv file required")
 
-    flag = False
+    flag: bool = False
     for idx, arg in enumerate(argv):
         if arg.endswith(".csv"):
             argv[idx] = f"-i={arg}"