Instantiate all distributions

Required because testing select boxes when the options are not easily convertible to strings seems very difficult.

distribution_zoo/__init__.py

@@ -14,8 +14,8 @@
 
 dist_mapping = {
     DistributionClass('Continuous Univariate', 'cont_uni'): [
-        Normal,
-        Gamma,
+        Normal(),
+        Gamma(),
     ],
     DistributionClass('Discrete Univariate', 'disc_uni'): [
     ],

distribution_zoo/base_distribution.py

@@ -28,6 +28,9 @@ def __init__(self):
     def get_class_name(cls):
         return cls.__name__
 
+    def __str__(self):
+        return self.display_name
+
     def display(self):
         self.title()
         st.sidebar.header('Parameters:')

main.py

@@ -57,16 +57,15 @@
 selected_dist = st.sidebar.selectbox(
     label='Select a distribution',
     options=available_dists,
-    format_func=lambda _dist: _dist.display_name,
     index=selected_dist_index,
     placeholder='Select a distribution',
     label_visibility='collapsed',
     key='dist',
 )
 
 if selected_dist:
-    selected_dist_inst = selected_dist()
-    selected_dist_inst.display()
+    selected_dist.display()
+
 else:
 
     with st.container():