diff --git a/.gitignore b/.gitignore
index a9ce055..482f8e8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
-.dir-locals.el
\ No newline at end of file
+.dir-locals.el
+__pycache__
diff --git a/entry_point.py b/entry_point.py
new file mode 100644
index 0000000..9d18c39
--- /dev/null
+++ b/entry_point.py
@@ -0,0 +1,16 @@
+#!/usr/bin/env python
+# PYTHON_ARGCOMPLETE_OK
+import argparse
+
+
+from argcomplete import autocomplete
+from primitive_roots import primitive_roots
+
+parser = argparse.ArgumentParser(prog="prim-wallpaper")
+
+parser.add_argument("prim1", type=int, choices=primitive_roots)
+parser.add_argument("prim3", type=int, choices=primitive_roots)
+parser.add_argument("prim2", type=int, choices=primitive_roots)
+autocomplete(parser)
+
+args = parser.parse_args()
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..b090259
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,2 @@
+Pillow
+argcomplete