Merge pull request dabeaz-course#98 from wo-von/practical-python-edits

Practical python edits

Author: dabeaz

Notes/05_Object_model/02_Classes_encapsulation.md

@@ -95,8 +95,8 @@ One approach: introduce accessor methods.
 class Stock:
     def __init__(self, name, shares, price):
         self.name = name
-	self.set_shares(shares)
-	self.price = price
+	    self.set_shares(shares)
+	    self.price = price
 
     # Function that layers the "get" operation
     def get_shares(self):

Notes/06_Generators/01_Iteration_protocol.md

@@ -42,9 +42,9 @@ _iter = obj.__iter__()        # Get iterator object
 while True:
     try:
         x = _iter.__next__()  # Get next item
+        # statements ...
     except StopIteration:     # No more items
         break
-    # statements ...
 ```
 
 All the objects that work with the `for-loop` implement this low-level

Notes/06_Generators/03_Producers_consumers.md

@@ -124,6 +124,7 @@ opening a file--it merely operates on a sequence of lines given
 to it as an argument.  Now, try this:
 
 ```
+>>> from follow import follow
 >>> lines = follow('Data/stocklog.csv')
 >>> ibm = filematch(lines, 'IBM')
 >>> for line in ibm:

Notes/07_Advanced_Topics/03_Returning_functions.md

@@ -86,6 +86,7 @@ Consider a function like this:
 
 ```python
 def after(seconds, func):
+    import time
     time.sleep(seconds)
     func()
 ```
@@ -110,6 +111,7 @@ def add(x, y):
     return do_add
 
 def after(seconds, func):
+    import time
     time.sleep(seconds)
     func()