diff --git a/gitrev.py b/gitrev.py
new file mode 100644
index 0000000..2519772
--- /dev/null
+++ b/gitrev.py
@@ -0,0 +1,36 @@
+#!/usr/bin/env python3
+""" Automaticky generator cisla verze
+Automaticky generuje cislo verze z informaci, poskytnutych gitem
+Copyright (c) 2019, 2020, 2021 xPablo.cz
+Autor: Pavel Brychta
+
+"""
+import subprocess
+
+dirty = False
+branch = "HEAD"
+build = "0"
+try:
+    version_parts = subprocess.check_output(["git", "describe", "--tags", "--dirty", "--long", "--always"]).decode().strip().split('-')
+    branch = subprocess.check_output(["git", "rev-parse", "--abbrev-ref", "HEAD"]).decode().strip()
+    if version_parts[-1] == "dirty":
+        dirty = True
+        version_parts.pop()
+
+    if len(version_parts) >= 3:
+        # zahodime abbrev
+        version_parts.pop();
+        build = version_parts.pop()
+        version = '-'.join(version_parts)
+    else:
+        # neni zatim zadny tag
+        version = '0.0.0'
+        build = subprocess.check_output(["git", "rev-list", "--all", "--count"]).decode().strip()
+except:
+    version = 'x.x.x'
+
+build = "" if build == "0" else "." + build
+dirty_text = "" if not dirty else "m"
+branch_text = "" if branch in ("master", "HEAD") else "[{}]".format(branch)
+
+print("{}{}{}{}".format(version, build, dirty_text, branch_text))