Index: zlibmodule.c
===================================================================
--- zlibmodule.c	(revision 65475)
+++ zlibmodule.c	(working copy)
@@ -174,7 +174,7 @@
 
     err=deflateEnd(&zst);
     if (err == Z_OK)
-	ReturnVal = PyByteArray_FromStringAndSize((char *)output,
+	ReturnVal = PyBytes_FromStringAndSize((char *)output,
                                               zst.total_out);
     else
 	zlib_error(zst, err, "while finishing compression");
@@ -211,12 +211,12 @@
     zst.avail_in = length;
     zst.avail_out = r_strlen;
 
-    if (!(result_str = PyByteArray_FromStringAndSize(NULL, r_strlen)))
-	return NULL;
+    if (!(result_str = PyBytes_FromStringAndSize(NULL, r_strlen)))
+      return NULL;
 
     zst.zalloc = (alloc_func)NULL;
     zst.zfree = (free_func)Z_NULL;
-    zst.next_out = (Byte *)PyByteArray_AS_STRING(result_str);
+    zst.next_out = (Byte *)PyBytes_AS_STRING(result_str);
     zst.next_in = (Byte *)input;
     err = inflateInit2(&zst, wsize);
 
@@ -256,12 +256,12 @@
 	    /* fall through */
 	case(Z_OK):
 	    /* need more memory */
-	    if (PyByteArray_Resize(result_str, r_strlen << 1) < 0) {
+	    if (_PyBytes_Resize(&result_str, r_strlen << 1) < 0) {
 		inflateEnd(&zst);
 		goto error;
 	    }
 	    zst.next_out =
-                (unsigned char *)PyByteArray_AS_STRING(result_str) + r_strlen;
+                (unsigned char *)PyBytes_AS_STRING(result_str) + r_strlen;
 	    zst.avail_out = r_strlen;
 	    r_strlen = r_strlen << 1;
 	    break;
@@ -278,7 +278,7 @@
 	goto error;
     }
 
-    if (PyByteArray_Resize(result_str, zst.total_out) < 0)
+    if (_PyBytes_Resize(&result_str, zst.total_out) < 0)
         goto error;
 
     return result_str;