Fix Broken Links

Notes/02_Working_with_data/00_Overview.md

@@ -6,12 +6,12 @@ lists, sets, and dictionaries and discusses common data handling
 idioms.  The last part of this section dives a little deeper
 into Python's underlying object model.
 
-* [2.1 Datatypes and Data Structures](01_Datatypes)
-* [2.2 Containers](02_Containers)
-* [2.3 Formatted Output](03_Formatting)
-* [2.4 Sequences](04_Sequences)
-* [2.5 Collections module](05_Collections)
-* [2.6 List comprehensions](06_List_comprehension)
-* [2.7 Object model](07_Objects)
+* [2.1 Datatypes and Data Structures](01_Datatypes.md)
+* [2.2 Containers](02_Containers.md)
+* [2.3 Formatted Output](03_Formatting.md)
+* [2.4 Sequences](04_Sequences.md)
+* [2.5 Collections module](05_Collections.md)
+* [2.6 List comprehensions](06_List_comprehension.md)
+* [2.7 Object model](07_Objects.md)
 
-[Contents](../Contents)
+[Contents](../Contents.md)

Notes/02_Working_with_data/01_Datatypes.md

@@ -1,4 +1,4 @@
-[Contents](../Contents) \| [Previous (1.6 Files)](../01_Introduction/06_Files) \| [Next (2.2 Containers)](02_Containers)
+[Contents](../Contents.md) \| [Previous (1.6 Files)](../01_Introduction/06_Files.md) \| [Next (2.2 Containers)](02_Containers)
 
 # 2.1 Datatypes and Data structures
 
@@ -242,7 +242,7 @@ shares and the price:
 ```
 
 Is math broken in Python? What’s the deal with the answer of
-3220.0000000000005?  
+3220.0000000000005?
 
 This is an artifact of the floating point hardware on your computer
 only being able to accurately represent decimals in Base-2, not
@@ -446,4 +446,4 @@ dict_items([('name', 'AA'), ('shares', 75), ('price', 32.2), ('date', (6, 11, 20
 >>>
 ```
 
-[Contents](../Contents) \| [Previous (1.6 Files)](../01_Introduction/06_Files) \| [Next (2.2 Containers)](02_Containers)
+[Contents](../Contents.md) \| [Previous (1.6 Files)](../01_Introduction/06_Files.md) \| [Next (2.2 Containers)](02_Containers)

Notes/02_Working_with_data/02_Containers.md

@@ -1,8 +1,8 @@
-[Contents](../Contents) \| [Previous (2.1 Datatypes)](01_Datatypes) \| [Next (2.3 Formatting)](03_Formatting)
+[Contents](../Contents.md) \| [Previous (2.1 Datatypes)](01_Datatypes) \| [Next (2.3 Formatting)](03_Formatting)
 
 # 2.2 Containers
 
-This section discusses lists, dictionaries, and sets. 
+This section discusses lists, dictionaries, and sets.
 
 ### Overview
 
@@ -205,7 +205,7 @@ for the rest of this course.  Do your work in the file `Work/report.py`.
 ### Exercise 2.4: A list of tuples
 
 The file `Data/portfolio.csv` contains a list of stocks in a
-portfolio.  In [Exercise 1.30](../01_Introduction/07_Functions), you
+portfolio.  In [Exercise 1.30](../01_Introduction/07_Functions.md), you
 wrote a function `portfolio_cost(filename)` that read this file and
 performed a simple calculation.
 
@@ -442,5 +442,5 @@ should take the list of stocks in Exercise 2.5 and the dictionary of
 prices in Exercise 2.6 and computes the current value of the portfolio
 along with the gain/loss.
 
-[Contents](../Contents) \| [Previous (2.1 Datatypes)](01_Datatypes) \| [Next (2.3 Formatting)](03_Formatting)
+[Contents](../Contents.md) \| [Previous (2.1 Datatypes)](01_Datatypes) \| [Next (2.3 Formatting)](03_Formatting)
 

Notes/02_Working_with_data/03_Formatting.md

@@ -1,4 +1,4 @@
-[Contents](../Contents) \| [Previous (2.2 Containers)](02_Containers) \| [Next (2.4 Sequences)](04_Sequences)
+[Contents](../Contents.md) \| [Previous (2.2 Containers)](02_Containers) \| [Next (2.4 Sequences)](04_Sequences)
 
 # 2.3 Formatting
 
@@ -77,7 +77,7 @@ You can use the `format_map()` method to apply string formatting to a dictionary
 ```
 
 It uses the same codes as `f-strings` but takes the values from the
-supplied dictionary.  
+supplied dictionary.
 
 ### format() method
 
@@ -92,7 +92,7 @@ keyword arguments.
 >>>
 ```
 
-Frankly, `format()` is a bit verbose. I prefer f-strings. 
+Frankly, `format()` is a bit verbose. I prefer f-strings.
 
 ### C-Style Formatting
 
@@ -299,4 +299,4 @@ How would you modify your code so that the price includes the currency symbol ($
        IBM        100    $106.28      35.84
 ```
 
-[Contents](../Contents) \| [Previous (2.2 Containers)](02_Containers) \| [Next (2.4 Sequences)](04_Sequences)
+[Contents](../Contents.md) \| [Previous (2.2 Containers)](02_Containers) \| [Next (2.4 Sequences)](04_Sequences)

Notes/02_Working_with_data/04_Sequences.md

@@ -1,4 +1,4 @@
-[Contents](../Contents) \| [Previous (2.3 Formatting)](03_Formatting) \| [Next (2.5 Collections)](05_Collections)
+[Contents](../Contents.md) \| [Previous (2.3 Formatting)](03_Formatting) \| [Next (2.5 Collections)](05_Collections)
 
 # 2.4 Sequences
 
@@ -546,4 +546,4 @@ Also, be aware that `zip()` stops once the shortest input sequence is exhausted.
 >>>
 ```
 
-[Contents](../Contents) \| [Previous (2.3 Formatting)](03_Formatting) \| [Next (2.5 Collections)](05_Collections)
+[Contents](../Contents.md) \| [Previous (2.3 Formatting)](03_Formatting) \| [Next (2.5 Collections)](05_Collections)

Notes/02_Working_with_data/05_Collections.md

@@ -1,4 +1,4 @@
-[Contents](../Contents) \| [Previous (2.4 Sequences)](04_Sequences) \| [Next (2.6 List Comprehensions)](06_List_comprehension)
+[Contents](../Contents.md) \| [Previous (2.4 Sequences)](04_Sequences) \| [Next (2.6 List Comprehensions)](06_List_comprehension)
 
 # 2.5 collections module
 
@@ -168,4 +168,4 @@ in all of Python.  In fact, we could do an extended tutorial on just
 that.  However, doing so now would also be a distraction.  For now,
 put `collections` on your list of bedtime reading for later.
 
-[Contents](../Contents) \| [Previous (2.4 Sequences)](04_Sequences) \| [Next (2.6 List Comprehensions)](06_List_comprehension)
+[Contents](../Contents.md) \| [Previous (2.4 Sequences)](04_Sequences) \| [Next (2.6 List Comprehensions)](06_List_comprehension)

Notes/02_Working_with_data/06_List_comprehension.md

@@ -1,4 +1,4 @@
-[Contents](../Contents) \| [Previous (2.5 Collections)](05_Collections) \| [Next (2.7 Object Model)](07_Objects)
+[Contents](../Contents.md) \| [Previous (2.5 Collections)](05_Collections) \| [Next (2.7 Object Model)](07_Objects)
 
 # 2.6 List Comprehensions
 
@@ -310,7 +310,7 @@ of the file:
 
 Oh my, you just reduced much of the `read_portfolio()` function to a single statement.
 
-### Commentary 
+### Commentary
 
 List comprehensions are commonly used in Python as an efficient means
 for transforming, filtering, or collecting data.  Due to the syntax,
@@ -326,4 +326,4 @@ extraction, and so forth.  Becoming a guru master of list
 comprehensions can substantially reduce the time spent devising a
 solution.  Also, don't forget about the `collections` module.
 
-[Contents](../Contents) \| [Previous (2.5 Collections)](05_Collections) \| [Next (2.7 Object Model)](07_Objects)
+[Contents](../Contents.md) \| [Previous (2.5 Collections)](05_Collections) \| [Next (2.7 Object Model)](07_Objects)

Notes/02_Working_with_data/07_Objects.md

@@ -1,8 +1,8 @@
-[Contents](../Contents) \| [Previous (2.6 List Comprehensions)](06_List_comprehension) \| [Next (3 Program Organization)](../03_Program_organization/00_Overview)
+[Contents](../Contents.md) \| [Previous (2.6 List Comprehensions)](06_List_comprehension) \| [Next (3 Program Organization)](../03_Program_organization/00_Overview)
 
 # 2.7 Objects
 
-This section introduces more details about Python's internal object model and 
+This section introduces more details about Python's internal object model and
 discusses some matters related to memory management, copying, and type checking.
 
 ### Assignment
@@ -451,4 +451,4 @@ Bonus: How would you modify this example to additionally parse the
 Spend some time to ponder what you’ve done in this exercise. We’ll
 revisit these ideas a little later.
 
-[Contents](../Contents) \| [Previous (2.6 List Comprehensions)](06_List_comprehension) \| [Next (3 Program Organization)](../03_Program_organization/00_Overview)
+[Contents](../Contents.md) \| [Previous (2.6 List Comprehensions)](06_List_comprehension) \| [Next (3 Program Organization)](../03_Program_organization/00_Overview)