diff --git a/applications/admin/controllers/appadmin.py b/applications/admin/controllers/appadmin.py
index 6b3a8370..2f780749 100644
--- a/applications/admin/controllers/appadmin.py
+++ b/applications/admin/controllers/appadmin.py
@@ -576,7 +576,7 @@ def bg_graph_model():
             meta_graphmodel = dict(group=request.application, color='#ECECEC')
 
         group = meta_graphmodel['group'].replace(' ', '')
-        if not subgraphs.has_key(group):
+        if group not in subgraphs:
             subgraphs[group] = dict(meta=meta_graphmodel, tables=[])
         subgraphs[group]['tables'].append(tablename)
 
diff --git a/applications/admin/views/default/design.html b/applications/admin/views/default/design.html
index 2d918b83..cd6d60f8 100644
--- a/applications/admin/views/default/design.html
+++ b/applications/admin/views/default/design.html
@@ -207,7 +207,7 @@ for c in controllers: controller_functions+=[c[:-3]+'/%s.html'%x for x in functi
                 {{=peekfile('views',c, dict(id=id))}}
             </span>
             <span class="extras celled celled-one">
-                {{if extend.has_key(c):}}{{=T("extends")}} <b>{{=extend[c]}}</b> {{pass}}
+                {{if c in extend:}}{{=T("extends")}} <b>{{=extend[c]}}</b> {{pass}}
                 {{if include[c]:}}{{=T("includes")}} {{pass}}{{=XML(', '.join([B(f).xml() for f in include[c]]))}}
             </span>
         </li>
diff --git a/applications/admin/views/default/plugin.html b/applications/admin/views/default/plugin.html
index 0fd8ea1a..a0c5a2d4 100644
--- a/applications/admin/views/default/plugin.html
+++ b/applications/admin/views/default/plugin.html
@@ -144,7 +144,7 @@ for c in controllers: controller_functions+=[c[:-3]+'/%s.html'%x for x in functi
 				{{=peekfile('views',c)}}
 			</span>
 			<span class="extras celled">
-				{{if extend.has_key(c):}}{{=T("extends")}} <b>{{=extend[c]}}</b> {{pass}}
+				{{if c in extend:}}{{=T("extends")}} <b>{{=extend[c]}}</b> {{pass}}
 				{{if include[c]:}}{{=T("includes")}} {{pass}}{{=XML(', '.join([B(f).xml() for f in include[c]]))}}
 			</span>
 		</li>
diff --git a/applications/examples/controllers/appadmin.py b/applications/examples/controllers/appadmin.py
index 6b3a8370..2f780749 100644
--- a/applications/examples/controllers/appadmin.py
+++ b/applications/examples/controllers/appadmin.py
@@ -576,7 +576,7 @@ def bg_graph_model():
             meta_graphmodel = dict(group=request.application, color='#ECECEC')
 
         group = meta_graphmodel['group'].replace(' ', '')
-        if not subgraphs.has_key(group):
+        if group not in subgraphs:
             subgraphs[group] = dict(meta=meta_graphmodel, tables=[])
         subgraphs[group]['tables'].append(tablename)
 
diff --git a/applications/welcome/controllers/appadmin.py b/applications/welcome/controllers/appadmin.py
index 6b3a8370..2f780749 100644
--- a/applications/welcome/controllers/appadmin.py
+++ b/applications/welcome/controllers/appadmin.py
@@ -576,7 +576,7 @@ def bg_graph_model():
             meta_graphmodel = dict(group=request.application, color='#ECECEC')
 
         group = meta_graphmodel['group'].replace(' ', '')
-        if not subgraphs.has_key(group):
+        if group not in subgraphs:
             subgraphs[group] = dict(meta=meta_graphmodel, tables=[])
         subgraphs[group]['tables'].append(tablename)
 
diff --git a/gluon/html.py b/gluon/html.py
index 5c44f4fb..8290e820 100644
--- a/gluon/html.py
+++ b/gluon/html.py
@@ -2646,7 +2646,7 @@ def test():
     >>> form=FORM(INPUT(value="Hello World", _name="var", requires=IS_MATCH('^\w+$')))
     >>> isinstance(form.as_dict(), dict)
     True
-    >>> form.as_dict(flat=True).has_key("vars")
+    >>> "vars" in form.as_dict(flat=True)
     True
     >>> isinstance(form.as_json(), basestring) and len(form.as_json(sanitize=False)) > 0
     True
diff --git a/gluon/tools.py b/gluon/tools.py
index dde1e1fe..7ef74ca0 100644
--- a/gluon/tools.py
+++ b/gluon/tools.py
@@ -4693,7 +4693,7 @@ class Auth(object):
         if resolve:
             if slug:
                 wiki = self._wiki.read(slug, force_render)
-                if isinstance(wiki, dict) and wiki.has_key('content'):  # FIXME: .has_key() is deprecated
+                if isinstance(wiki, dict) and 'content' in wiki:
                     # We don't want to return a dict object, just the wiki
                     wiki = wiki['content']
             else:
@@ -5710,7 +5710,7 @@ class Service(object):
 
         def return_error(id, code, message=None, data=None):
             error = {'code': code}
-            if Service.jsonrpc_errors.has_key(code):
+            if code in Service.jsonrpc_errors:
                 error['message'] = Service.jsonrpc_errors[code][0]
                 error['data'] = Service.jsonrpc_errors[code][1]
             if message is not None: