diff --git a/.gitignore b/.gitignore
index 81642b0e1447e..8928fea0c32dc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,7 +5,8 @@ babel
 _build
 _static
 caravel/bin/caravelc
-envpy3
+env_py3
+.eggs
 build
 *.db
 tmp
diff --git a/caravel/forms.py b/caravel/forms.py
index fe7146ba6ed72..cfb59653dfad1 100644
--- a/caravel/forms.py
+++ b/caravel/forms.py
@@ -38,7 +38,7 @@ def iter_choices(self):
                 if value:
                     yield d.pop(value)
         while d:
-            yield d.pop(d.keys()[0])
+            yield d.popitem(last=False)[1]
 
 
 class FreeFormSelect(widgets.Select):
@@ -82,6 +82,7 @@ def get_field(self, fieldname):
         return getattr(self, fieldname)
 
     def field_css_classes(self, fieldname):
+        print(fieldname, self.css_classes[fieldname])
         if fieldname in self.css_classes:
             return " ".join(self.css_classes[fieldname])
         return ""
diff --git a/caravel/templates/caravel/explore.html b/caravel/templates/caravel/explore.html
index a8fe55f7e3d2d..da6cd79b8a090 100644
--- a/caravel/templates/caravel/explore.html
+++ b/caravel/templates/caravel/explore.html
@@ -112,7 +112,7 @@
                 {% for fieldname in fieldset.fields %}
                   {% if not fieldname %}
                     <hr/>
-                  {% elif not fieldname.__iter__ %}
+                  {% elif fieldname is string %}
                     {{ panofield(fieldname) }}
                   {% else %}
                   <div class="row">
diff --git a/caravel/views.py b/caravel/views.py
index 11f76f58d1c62..f6aa4123a0913 100644
--- a/caravel/views.py
+++ b/caravel/views.py
@@ -467,8 +467,9 @@ def explore(self, datasource_type, datasource_id):
             else:
                 template = "caravel/explore.html"
 
+            resp = self.render_template(template, viz=obj, slice=slc)
             try:
-                resp = self.render_template(template, viz=obj, slice=slc)
+                pass
             except Exception as e:
                 if config.get("DEBUG"):
                     raise(e)
diff --git a/setup.py b/setup.py
index f5055fe9b7860..ef304c15bef22 100644
--- a/setup.py
+++ b/setup.py
@@ -19,6 +19,7 @@
         'flask-cache>=0.13.1, <0.14.0',
         'flask-migrate>=1.5.1, <2.0.0',
         'flask-script>=2.0.5, <3.0.0',
+        'flask-sqlalchemy==2.0.0',
         'flask-testing>=0.4.2, <0.5.0',
         'flask>=0.10.1, <1.0.0',
         'humanize>=0.5.1, <0.6.0',
diff --git a/tests/core_tests.py b/tests/core_tests.py
index e55e5db788152..01239949bca4d 100644
--- a/tests/core_tests.py
+++ b/tests/core_tests.py
@@ -70,7 +70,7 @@ def test_dashboard(self):
             urls[dash.dashboard_title] = dash.url
         for title, url in urls.items():
             print(url)
-            assert escape(title) in self.client.get(url).data
+            assert escape(title) in self.client.get(url).data.decode('utf-8')
 
     def test_doctests(self):
         modules = [utils]
@@ -80,8 +80,8 @@ def test_doctests(self):
                 raise Exception("Failed a doctest")
 
     def test_misc(self):
-        assert self.client.get('/health').data == "OK"
-        assert self.client.get('/ping').data == "OK"
+        assert self.client.get('/health').data.decode('utf-8') == "OK"
+        assert self.client.get('/ping').data.decode('utf-8') == "OK"
 
 
 if __name__ == '__main__':