diff --git a/dump_inp.py b/dump_inp.py
new file mode 100644
index 0000000..1355390
--- /dev/null
+++ b/dump_inp.py
@@ -0,0 +1,12 @@
+import sys
+from tjnetwork import *
+
+def main():
+    if  len(sys.argv) != 2:
+        print("dump_inp name")
+        return
+
+    dump_inp(sys.argv[1], f'{sys.argv[1]}.inp', '2')
+
+if __name__ == '__main__':
+    main()