trie_and_other_modification

Author: abhivickyvyas

rdflib/namespace.py

@@ -694,7 +694,10 @@ def compute_qname_strict(self, uri, generate=True):
 
             return self.__cache_strict[uri]
 
-    def unbind(self,prefix):
+    def unbind(self, prefix):
+        for ns in self.namespaces():
+            if (ns[0] == prefix):
+                del self.__trie[str(ns[1])]
         self.store.unbind(prefix)
 
     def bind(self, prefix, namespace, override=True, replace=False):

rdflib/plugins/memory.py

@@ -155,7 +155,10 @@ def __len__(self, context=None):
     def bind(self, prefix, namespace):
         self.__prefix[namespace] = prefix
         self.__namespace[prefix] = namespace
+
     def unbind(self, prefix):
+        temp_prefix = {x: y for x, y in self.__prefix.items() if y != prefix}
+        self.__prefix = temp_prefix
         del self.__namespace[prefix]
 
     def namespace(self, prefix):