Added the version check python file to exit script if python version …

…below 3.6

siem.py

@@ -22,6 +22,7 @@
 import name_mapping
 import config
 import api_client
+import vercheck
 
 VERSION = "1.0.0"
 QUIET = False

vercheck.py

@@ -0,0 +1,22 @@
+#!/usr/bin/env python3
+
+# Copyright 2019-2021 Sophos Limited
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:  http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software distributed under the License is
+# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied. See the License for the specific language governing permissions and limitations under the
+# License.
+#
+import sys
+
+REQUIRED_VERSION_MAJOR = 3
+REQUIRED_VERSION_MINOR = 6
+
+if not (sys.version_info.major == REQUIRED_VERSION_MAJOR and sys.version_info.minor >= REQUIRED_VERSION_MINOR):
+    print("Sophos SIEM requires Python %d.%d or higher!" % (REQUIRED_VERSION_MAJOR, REQUIRED_VERSION_MINOR))
+    print("You are using Python %d.%d." % (sys.version_info.major, sys.version_info.minor))
+    sys.exit(1)