diff --git a/17-Chernobyl/Code/crappy_python/caller_id.py b/17-Chernobyl/Code/crappy_python/caller_id.py
new file mode 100644
index 0000000..a7dad25
--- /dev/null
+++ b/17-Chernobyl/Code/crappy_python/caller_id.py
@@ -0,0 +1,19 @@
+#!/usr/bin/env python3
+"""
+caller_id: Call a function with arbitrary parameters in microcorruption
+"""
+
+import re
+
+preamble = "reset; break main; continue; unbreak main;"
+
+while 1:
+   address, *args = re.split(r"[(,) ]",input("> "))
+   if address == "": break
+   print(f"{preamble} Let pc = {address}", end=";")
+   reg = 15
+   for arg in args:
+      if arg:
+         print(f"Let r{reg} = {arg}", end=";")
+         reg -= 1
+   print("\b ")