diff --git a/pkgs/development/python-modules/ptest/default.nix b/pkgs/development/python-modules/ptest/default.nix
new file mode 100644
index 000000000000..0de6f98828fe
--- /dev/null
+++ b/pkgs/development/python-modules/ptest/default.nix
@@ -0,0 +1,23 @@
+{ stdenv
+, buildPythonPackage
+, fetchFromGitHub
+}:
+
+buildPythonPackage rec {
+  pname = "ptest";
+  version =  "1.5.3";
+
+  src = fetchFromGitHub {
+    owner = "KarlGong";
+    repo = pname;
+    rev = version + "-release";
+    sha256 = "1r50lm6n59jzdwpp53n0c0hp3aj1jxn304bk5gh830226gsaf2hn";
+  };
+
+  meta = with stdenv.lib; {
+    description = "Test classes and test cases using decorators, execute test cases by command line, and get clear reports";
+    homepage = https://pypi.python.org/pypi/ptest;
+    license = licenses.asl20;
+  };
+
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 5d31caa7b146..bdf5689e6d24 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -3447,22 +3447,7 @@ in {
 
   ldap3 = callPackage ../development/python-modules/ldap3 {};
 
-  ptest = buildPythonPackage rec {
-    name = pname + "-" + version;
-    pname = "ptest";
-    version =  "1.5.3";
-    src = pkgs.fetchFromGitHub {
-      owner = "KarlGong";
-      repo = pname;
-      rev = version + "-release";
-      sha256 = "1r50lm6n59jzdwpp53n0c0hp3aj1jxn304bk5gh830226gsaf2hn";
-    };
-    meta = {
-      description = "Test classes and test cases using decorators, execute test cases by command line, and get clear reports";
-      homepage = https://pypi.python.org/pypi/ptest;
-      license = licenses.asl20;
-    };
-  };
+  ptest = callPackage ../development/python-modules/ptest { };
 
   ptyprocess = callPackage ../development/python-modules/ptyprocess { };