diff --git a/pkgs/development/python-modules/betacode/default.nix b/pkgs/development/python-modules/betacode/default.nix
new file mode 100644
index 000000000000..8bd78fb49d2b
--- /dev/null
+++ b/pkgs/development/python-modules/betacode/default.nix
@@ -0,0 +1,19 @@
+{ fetchPypi, buildPythonPackage, pygtrie, isPy3k, lib, }:
+buildPythonPackage rec {
+  pname = "betacode";
+  version = "1.0";
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "0s84kd9vblbjz61q7zchx64a6hmdqb4lillna5ryh0g9ij76g6r5";
+  };
+  preBuild = ''echo > README.rst'';
+  # setup.py uses a python3 os.path.join
+  disabled = !isPy3k;
+  propagatedBuildInputs = [ pygtrie ];
+  meta = {
+    homepage = "https://github.com/matgrioni/betacode";
+    description = "A small python package to flexibly convert from betacode to unicode and back.";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ kmein ];
+  };
+}
diff --git a/pkgs/development/python-modules/pygtrie/default.nix b/pkgs/development/python-modules/pygtrie/default.nix
new file mode 100644
index 000000000000..5bfd991b4841
--- /dev/null
+++ b/pkgs/development/python-modules/pygtrie/default.nix
@@ -0,0 +1,15 @@
+{ lib, fetchPypi, buildPythonPackage, ... }:
+buildPythonPackage rec {
+  pname = "pygtrie";
+  version = "2.3";
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "00x7q4p9r75zdnw3a8vd0d0w0i5l28w408g5bsfl787yv6b1h9i8";
+  };
+  meta = {
+    homepage = "https://github.com/mina86/pygtrie";
+    description = "Trie data structure implementation";
+    license = lib.licenses.asl20;
+    maintainers = with lib.maintainers; [ kmein ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 228098d57867..73d17cd89fd5 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -831,6 +831,8 @@ in {
 
   bespon = callPackage ../development/python-modules/bespon { };
 
+  betacode = callPackage ../development/python-modules/betacode { };
+
   betamax = callPackage ../development/python-modules/betamax { };
 
   betamax-matchers = callPackage ../development/python-modules/betamax-matchers { };
@@ -5102,6 +5104,8 @@ in {
 
   pygtksourceview = callPackage ../development/python-modules/pygtksourceview { inherit (pkgs) pkgconfig; };
 
+  pygtrie = callPackage ../development/python-modules/pygtrie { };
+
   pyhamcrest = if isPy3k then
     callPackage ../development/python-modules/pyhamcrest { }
   else