Renamed functions to avoid using the digit two as a pun for (convert)…

… to.

Removed the "contents" argument for the helper functions (now filename or handle only)

Use Bio.SwissProt to support reading "swiss" format.

Bio/SeqIO/SwissIO.py

@@ -0,0 +1,27 @@
+# Copyright 2006 by Peter Cock.  All rights reserved.
+#
+# This code is part of the Biopython distribution and governed by its
+# license.  Please see the LICENSE file that should have been included
+# as part of this package.
+
+from Bio.SwissProt import SProt
+
+#This is a normal function!
+def SwissIterator(handle) :
+    """Breaks up a Swiss-Prot/UniProt file into SeqRecord objects
+
+    Every section from the ID line to the terminating // becomes
+    a single SeqRecord with associated annotation and features.
+
+    This parser is for the flat file "swiss" format as used by:
+     * Swiss-Prot aka SwissProt
+     * TrEMBL
+     * UniProtKB aka UniProt Knowledgebase
+
+    It does NOT read their new XML file format.
+    http://www.expasy.org/sprot/
+
+    For consistency with BioPerl and EMBOSS we call this the "swiss"
+    format.
+    """
+    return SProt.Iterator(handle, SProt.SequenceParser())