Merge pull request #856 from ashleysommer/ashleysommer-patch-1

Fix #847

Author: gromgull

rdflib/term.py

@@ -1481,7 +1481,7 @@ def _castPythonToLiteral(obj):
     URIRef(_XSD_PFX + 'normalizedString'): None,
     URIRef(_XSD_PFX + 'token'): None,
     URIRef(_XSD_PFX + 'language'): None,
-    URIRef(_XSD_PFX + 'boolean'): lambda i: i.lower() in ['1', 'true'],
+    URIRef(_XSD_PFX + 'boolean'): lambda i: i.lower() == 'true',
     URIRef(_XSD_PFX + 'decimal'): Decimal,
     URIRef(_XSD_PFX + 'integer'): long_type,
     URIRef(_XSD_PFX + 'nonPositiveInteger'): int,