change 2 if statements

Signed-off-by: Patrick St-Louis <patrick.st-louis@idlab.org>

Author: Patrick St-Louis

lib/pyld/context_resolver.py

@@ -63,7 +63,7 @@ def resolve(self, active_ctx, context, base, cycles=None):
                     all_resolved.extend(resolved)
                 else:
                     all_resolved.append(resolved)
-            elif not ctx:
+            elif ctx is None:
                 all_resolved.append(ResolvedContext(False))
             elif not isinstance(ctx, dict) and not isinstance(ctx, frozendict):
                 raise jsonld.JsonLdError(

lib/pyld/jsonld.py

@@ -2320,7 +2320,7 @@ def _expand(
                 for type_ in sorted(types):
                     ctx = JsonLdProcessor.get_context_value(
                         type_scoped_ctx, type_, '@context')
-                    if ctx is not None:
+                    if ctx:
                         active_ctx = self._process_context(
                             active_ctx, ctx, options, propagate=False)
 
@@ -3070,7 +3070,7 @@ def _process_context(self, active_ctx, local_ctx, options,
                 active_ctx['_uuid'] = str(uuid.uuid1())
 
             # reset to initial context
-            if not ctx:
+            if ctx is None:
                 if (not override_protected and
                      any(v.get('protected') for v in rval['mappings'].values())):
                     raise JsonLdError(