Index: svn_checksum_t.swg
===================================================================
--- svn_checksum_t.swg	(revision 0)
+++ svn_checksum_t.swg	(revision 0)
@@ -0,0 +1,47 @@
+%module checksum/**
+  * TYPE: svn_checksum_t.; functions typemapped svn_checksum_t ; svn_checksum_kind_t,  svn_checksum_create and avn_checksum_clear
+  * The input for the function svn_checksum_clear is of the Type svn_check_sum_t so by the typemap rules it maps to the typemap("in") defined here.
+  */
+
+#ifdef SWIGPYTHON
+%typemap(in) svn_checksum_t * {
+    /* check if the input is not  a const unsigned char* digest */
+    if(!PyBytes_Check($input)){
+        PyErr_SetString(PyExc_TypeError, "Not a valid Bit string");
+       /* return fail if it isnt*/
+        SWIG_fail;
+    }
+    /*else , pass is as the required argument for the svn_checksum_Clear function*/
+    $1 = svn_checksum_clear(PyBytes_FromString($input));
+}
+#endif
+
+#ifdef SWIGPYTHON
+/*here since svn_checksum_kind_t only defines the values returned by the enum function thus it can be treated as a simple int */
+%typemap(in) svn_checksum_kind_t  {
+    $1 = PyInt_AsLong($input);
+}
+%typemap (out) svnchecksum_kind_t {
+    $result = PyInt_FromLong($1);
+}
+
+#endif
+#ifdef SWIGPYTHON
+%typemap(in) svn_checksum_t * {
+    $1 = svn_checksum_create(PyInt_AsLong($input),_global_pool);
+}
+/* the out value for svn_checksum_t * will return a string intialized to 0's and the kind returned by svn_checksum_kind for create function tyoemapped here */
+%typemap(out) svn_checksum_t * {
+    $result = (PyBytes_FromString("0"),PyInt_FromLong($1));
+        
+        
+      /* (could have been??)  PyObject *t;
+
+    t = PyTuple_New(2);
+    /* refers to the initialized string */
+    PyTuple_SetItem(t, 0, PyBytes_FromString("0"));
+    /* refers to the value taken as an argument by the create function */
+    PyTuple_SetItem(t, 1, PyInt_FromLong($1)); */
+}
+#endif
+