fixed bugs in options 3 and 4

both options didnt do anything, they only worked with --session-file or -sid,
also I fixed this bug:
Traceback (most recent call last):
  File "import_export_package.py", line 49, in <module>
    export_package(client, args)
  File "/home/admin/ExportImportPolicyPackage-master/exporting/export_package.py", line 39, in export_package
    = export_access_rulebase(show_package.data["name"], access_layer["name"], access_layer["uid"], client, timestamp, tar_file)
  File "/home/admin/ExportImportPolicyPackage-master/exporting/export_access_rulebase.py", line 16, in export_access_rulebase
    get_query_rulebase_data(client, "access-rulebase", {"name": layer, "uid": layer_uid, "package": package})
  File "/home/admin/ExportImportPolicyPackage-master/exporting/export_objects.py", line 38, in get_query_rulebase_data
    if compare_versions(client.api_version, "1.1") != -1:
  File "/home/admin/ExportImportPolicyPackage-master/utils.py", line 126, in compare_versions
    v1_nums = version1.split('.')
AttributeError: 'NoneType' object has no attribute 'split'

import_export_package.py

@@ -13,6 +13,13 @@
 client = None
 
 
+def get_version(client):
+    if not client.api_version:
+        res = client.api_call("show-api-versions")
+        handle_login_fail(not res.success, "couldn't get api version")
+        client.api_version = res.data["current-version"]
+
+
 if __name__ == "__main__":
 
     arg_parser = argparse.ArgumentParser(description="R80.X Policy Package Export/Import Tool, V3.0")
@@ -36,15 +43,18 @@
                 payload["session-timeout"] = args.session_timeout
             client.login_as_root(domain=args.domain, payload=payload)
         elif args.login == '3':
+            args.session_file = raw_input("Please enter path to session file: ")
             client.sid = extract_sid_from_session_file(args.session_file)
             handle_login_fail(not client.sid, "Could not extract SID form Session-File!")
             test_reply = client.api_call("show-hosts", {"limit": 1})
             handle_login_fail(not test_reply.success, "Extract SID is invalid!")
-
+            get_version(client)
         elif args.login == '4':
+            client.sid = raw_input("Please enter sid: ")
             test_reply = client.api_call("show-hosts", {"limit": 1})
             handle_login_fail(not test_reply.success, "Supplied SID is invalid!")
-
+            get_version(client)
+
         if args.operation == "export":
             export_package(client, args)
         else: