Several edits to address review comments.

Author: prabhuramachandran

slides/01_intro.md

@@ -29,7 +29,7 @@ If you haven't already:
 - Install packages:
     - Using Enthought Deployment Manager (recommended)
       (https://www.enthought.com/edm):
-    
+
        ```bash
        edm envs create bootstrap
        edm install --environment bootstrap click
@@ -125,12 +125,12 @@ XXX Screenshot of final application
 <!-- #region slideshow={"slide_type": "slide"} -->
 ## Schedule
 
-- Step 0: Python script
-- Step 1: Using Traits.
-- Step 2: Basic GUI using TraitsUI
-- Step 3: PyFace application: tree navigator
-- Step 4: More features
-- Step 5: Installer
+- Step 1: Python script
+- Step 2: Using Traits.
+- Step 3: Basic GUI using TraitsUI
+- Step 4: PyFace application: tree navigator
+- Step 5: More features
+- Step 6: Installer
 
 
 <!-- #endregion -->

slides/02_traits.md

@@ -41,7 +41,7 @@ jupyter:
 <!-- #region slideshow={"slide_type": "slide"} -->
 ## Why all this?
 
-- No pain, no gain!
+- No pain, no gain! (Only a little pain, we promise!)
 
 - Small change to thinking yields big benefits
 
@@ -181,7 +181,7 @@ class Child(HasStrictTraits):
 
     @observe('father.last_name')
     def _dad_name_updated(self, event):
-        print('DAD name', self.father.last_name)
+        print(Father name changed to', self.father.last_name)
 
 ```
 
@@ -194,25 +194,11 @@ c = Child(father=Parent)
 dad.last_name = 'Valderrama'
 ```
 
-```python
-def handler(event):
-    print("handler", event.object, event.name, event.old, event.new)
-```
-
-```python
-c = Child(father=Parent(last_name='Ram'))
-c.observe(handler, 'father, age')
-```
-
 <!-- #region slideshow={"slide_type": "slide"} -->
 ## Trait change notification
 
 - Static: `def _<trait_name>_changed()`
 - Decorator: `@observe('extended.trait.name')`
-- Dynamic:
-
-```obj.observe(handler, 'extended.trait.name')
-```
 
 - See documentation: https://docs.enthought.com/traits/traits_user_manual/notification.html
 
@@ -245,8 +231,8 @@ class Child(HasStrictTraits):
     age = Int
     father = Instance(Parent)
     first_name = Str('')
-    alive = Bool(True)
-    gender = Enum('female', 'male', 'neither')
+    likes_queso = Bool(True)
+    handedness = Enum('right', 'left')
 
     def _age_changed(self, old, new):
         print('Age changed from %s to %s ' % (old, new))
@@ -259,113 +245,96 @@ class Child(HasStrictTraits):
 
 ```python
 p = Parent(last_name='Ray')
-c = Child(age=21, father=p, first_name='Romano', gender='male')
+c = Child(age=21, father=p, first_name='Romano', handedness='right')
 ```
 
-<!-- #region slideshow={"slide_type": "slide"} -->
-## Setting default values
 
-- For simple cases, use the default of the trait
-- For more complex cases use a special method
-- A simple example
+<!-- #region slideshow={"slide_type": "slide"} -->
+## Trait change event
 
+- Recall this
 <!-- #endregion -->
 
 ```python
-import datetime
+    @observe('father.last_name')
+    def _dad_name_updated(self, event):
+        print('Dad name', self.father.last_name)
+```
 
-from traits.api import HasStrictTraits, Date, Range
+- `event` is a `TraitChangeEvent` instance
 
-class Thing(HasStrictTraits):
-    date = Date()
-    age = Int(12)
 
-    def _date_default(self):
-        print('default')
-        return datetime.datetime.today()
-```
+```python slideshow={"slide_type": "slide"}
+class Child(HasStrictTraits):
+    age = Int
+    father = Instance(Parent)
+    first_name = Str('')
+    likes_queso = Bool(True)
+    handedness = Enum('right', 'left')
 
+    def _age_changed(self, old, new):
+        print('Age changed from %s to %s ' % (old, new))
+
+    @observe('father.last_name')
+    def _dad_name_updated(self, event):
+        print(event.object, event.name, event.old, event.new)
+        print('Dad name', self.father.last_name)
+
+```
 
 ```python
-t = Thing()
+p = Parent(last_name='Ray')
+c = Child(age=21, father=p, first_name='Romano', handedness='right')
 ```
 
 ```python
-type(c.age)
+p.last_name = 'Ahmed'
 ```
 
 <!-- #region slideshow={"slide_type": "slide"} -->
-## Trait Lists
+## Other Trait Events
 
+- Advanced, for other kind of traits
+- `List` trait changes: `ListChangeEvent`
+- `Dict` trait changes: `DictChangeEvent`
+- `Set` trait changes: `SetChangeEvent`
 
 <!-- #endregion -->
 
-```python
-from traits.api import List
-
-class Bowl(HasStrictTraits):
-    fruits = List(Str)
-
-    def _fruits_changed(self, o, n):
-        print("Fruits changed", o, n)
-
-```
-
-```python
-b = Bowl()
-b.fruits = ['apple']
-b.fruits.append('mango')
-```
 
 <!-- #region slideshow={"slide_type": "slide"} -->
-## Trait List events
+## Setting default values
+
+- For simple cases, use the default of the trait
+- For more complex cases use a special method
+- A simple example
 
 <!-- #endregion -->
 
 ```python
-class Bowl(HasStrictTraits):
-    fruits = List(Str)
-    def _fruits_changed(self, o, n):
-        print("Fruits changed", o, n)
+import datetime
 
-    def _fruits_items_changed(self, list_event):
-        print(list_event.index)
-        print(list_event.removed)
-        print(list_event.added)
+from traits.api import HasStrictTraits, Date, Range
 
-```
+class Thing(HasStrictTraits):
+    date = Date()
+    age = Int(12)
 
-```python
-b = Bowl()
-b.fruits = ['apple']
-b.fruits.append('mango')
+    def _date_default(self):slideshow={"slide_type": "slide"}
+        print('default')
+        return datetime.datetime.today()
 ```
 
-```python
-def handler(event):
-    print("h:", event)
 
-b.observe(handler, 'fruits.items')
-b.fruits.append('peach')
+```python
+t = Thing()
 ```
 
 ```python
-# Remove the handler
-b.observe(handler, 'fruits.items', remove=True)
+type(c.age)
 ```
 
 
-<!-- #region slideshow={"slide_type": "slide"} -->
-## Other events
-
-- `TraitChangeEvent`
-- `ListChangeEvent`
-- `DictChangeEvent`
-- `SetChangeEvent`
-
-<!-- #endregion -->
-
-
 
 <!-- #region slideshow={"slide_type": "slide"} -->
 ## Exercise time!

slides/03_traitsui.md

@@ -61,7 +61,7 @@ jupyter:
 <!-- #region slideshow={"slide_type": "slide"} -->
 ## MVC with traitsui
 
-- Model: `HasTraits` object
+- Model: `HasStrictTraits` object
 - View: `traitsui`,  `View` class
 - Controller: `traitsui` `Handler` class
 
@@ -82,12 +82,12 @@ jupyter:
 <!-- #endregion -->
 
 ```python
-from traits.api import HasTraits, Int, Str, Enum
+from traits.api import HasStrictTraits, Int, Str, Enum
 
-class Person(HasTraits):
+class Person(HasStrictTraits):
     name = Str()
     age = Int()
-    gender = Enum('female', 'male', 'other')
+    handedness = Enum('left', 'right')
 
 ```
 
@@ -111,7 +111,7 @@ from traitsui.api import Item, View
 view1 = View(
     Item(name='name', style='readonly'),
     Item(name='age'),
-    Item(name='gender', visible_when='age > 10'),
+    Item(name=handedness', visible_when='age > 10'),
 )
 ```
 
@@ -155,7 +155,7 @@ p.edit_traits(view=view1)
 ```python
 from traitsui.api import Group
 
-class Person(HasTraits):
+class Person(HasStrictTraits):
     name = Str()
     age = Int()
     gender = Enum('female', 'male', 'other')
@@ -188,7 +188,7 @@ p.edit_traits()
 - `icon`/`image`
 - `resizable`
 - `scrollable`
-- `title`
+- `title`: name of the window
 - `buttons`
 - `key_bindings`
 - See docs for more: https://docs.enthought.com/traitsui/traitsui_user_manual/
@@ -202,7 +202,7 @@ p.edit_traits()
 ```python
 from traitsui.api import CancelButton, OKButton
 
-class Person(HasTraits):
+class Person(HasStrictTraits):
     name = Str()
     age = Int()
     gender = Enum('female', 'male', 'other')