diff --git a/sirara/ext/__init__.py b/sirara/ext/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/sirara/ext/spams_ext.py b/sirara/ext/spams_ext.py
new file mode 100644
index 0000000..d308247
--- /dev/null
+++ b/sirara/ext/spams_ext.py
@@ -0,0 +1,5 @@
+import spams as _spams
+
+from sirara import wrapper
+
+trainDL = wrapper.factorizer(data_kw="X", num_atoms_kw="K", init_kw="D")(_spams.trainDL)
diff --git a/sirara/wrapper.py b/sirara/wrapper.py
new file mode 100644
index 0000000..d760265
--- /dev/null
+++ b/sirara/wrapper.py
@@ -0,0 +1,59 @@
+"""
+The module ``sirara`` exists to provide a wrapper for factorization functions.
+
+Overview
+===============================================================================
+
+This provides a wrapper to generate a standard factorization API. This allows
+for usage in other functions expecting a standard API.
+
+"""
+
+
+def factorizer(data_kw, num_atoms_kw, init_kw=None):
+    """
+        A wrapper that standardizes various factorization functions.
+
+        Args:
+            data_kw(str):         Keyword to use for the data.
+
+            num_atoms_kw(str):    Keyword to use for the number of atoms.
+
+            init_kw(str):         Keyword to use for the initial dictionary
+                                  (if possible to set).
+
+        Returns:
+            callable:             A decorator to use to wrap a function.
+    """
+
+    def factorizer_wrapper(a_callable):
+        """
+            The wrapper of the callable that creates a new standard function.
+
+            Args:
+                a_callable(callable):    The callable to wrap.
+
+            Returns:
+                callable:                 A decorator to wrap a function.
+        """
+
+        def wrapped(data, num_atoms, init=None, *args, **kwargs):
+            """
+                The wrapped function.
+            """
+
+            if init_kw is None:
+                assert init is None, \
+                    "This function doesn't take an initial argument."
+            else:
+                if init is not None:
+                    kwargs[init_kw] = init
+
+            kwargs[data_kw] = data
+            kwargs[num_atoms_kw] = num_atoms
+
+            return a_callable(*args, **kwargs)
+
+        return wrapped
+
+    return factorizer_wrapper
diff --git a/tests/test_ext/__init__.py b/tests/test_ext/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/test_sirara/test_wrapper.py b/tests/test_sirara/test_wrapper.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/test_wrapper.py b/tests/test_wrapper.py
new file mode 100644
index 0000000..e69de29