diff --git a/macros.python3 b/macros.python3
index 1952aed..646ae86 100644
--- a/macros.python3
+++ b/macros.python3
@@ -37,3 +37,18 @@
 %py3_install_wheel() %{expand:\\\
   pip%{python3_version} install -I dist/%{1} --root %{buildroot} --strip-file-prefix %{buildroot} --no-deps
 }
+
+# This only supports Python 3.5+ and will never work with Python 2.
+# Hence, it has no Python version in the name.
+%pycached() %{lua:
+  path = rpm.expand("%{?1}")
+  if (string.sub(path, "-3") ~= ".py") then
+    rpm.expand("%{error:%%pycached can only be used with paths explicitly ending with .py}")
+  else
+    print(path)
+    pyminor = path:match("/python3.(%d+)/") or "*"
+    dirname = path:match("(.*/)")
+    modulename = path:match(".*/([^/]+).py")
+    print("\\n" .. dirname .. "__pycache__/" .. modulename .. ".cpython-3" .. pyminor .. "{,.opt-?}.pyc")
+  end
+}
diff --git a/python-rpm-macros.spec b/python-rpm-macros.spec
index 2059ff0..6134b28 100644
--- a/python-rpm-macros.spec
+++ b/python-rpm-macros.spec
@@ -75,6 +75,7 @@ install -m 644 %{SOURCE0} %{SOURCE1} %{SOURCE2} %{SOURCE3} %{SOURCE4} \
 %changelog
 * Sat Dec 28 2019 Miro Hrončok <mhroncok@redhat.com> - 3-44
 - Define %%python, but make it work only if %%__python is redefined
+- Add the %%pycached macro
 
 * Fri Sep 27 2019 Miro Hrončok <mhroncok@redhat.com> - 3-43
 - Define %%python2 and %%python3