Add __main__.py to make python_netlist executable as a module

Author: AbAzaanoun

src/python_netlist/__main__.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""
+Allow running the module with: python -m python_netlist
+"""
+import argparse
+from pprint import pprint
+from .netlist import Netlist
+
+
+def main():
+    parser = argparse.ArgumentParser(description='Netlist tool')
+    parser.add_argument('--out', type=str, help='JSON output file')
+    parser.add_argument('--no-checks', default=False, action='store_true',
+                        help="Don't perform checks")
+    parser.add_argument('file', help="Netlist")
+    args = parser.parse_args()
+
+    print("...Parsing " + args.file + "...")
+    netlist = Netlist(args.file)
+    if not args.no_checks:
+        print("###### Check Orphans ######")
+        orphans = netlist.check_orphans()
+        if len(orphans):
+            print("## Possible orphans:")
+            pprint(orphans)
+            exit(1)
+
+
+if __name__ == '__main__':
+    main()