Added @wltrimbl's suggested fixes from #28

* Removed Unicode debris
* Added exception link

diff --git a/lessons/thw-testing/exercises.ipynb b/lessons/thw-testing/exercises.ipynb
index 9d6d85474c700f99536970424f190ab91d225148..3ea191ecf5347c2797ec1f7f82d516e6502158f5 100644 (file)
--- a/lessons/thw-testing/exercises.ipynb
+++ b/lessons/thw-testing/exercises.ipynb
@@ -25,7 +25,7 @@
      "source": [
       "## Exercise 1: Mileage\n",
       "\n",
-      "The function 'convert_mileage' converts miles per gallon (US style) to\u00c2 liters\n",
+      "The function 'convert_mileage' converts miles per gallon (US style) to liters\n",
       "per 100 km (metric style):"
      ]
     },
@@ -64,25 +64,25 @@
       "\n",
       "2. Reading the function again, you realize that accepting 0 or negative values\n",
       "make no sense and should be reported as an error. Look at the exceptions defined\n",
-      "in the `exceptions` module (use the built-in `help(...)` or `dir(...)`\n",
+      "in the `exceptions` module (see the [online documentation](http://docs.python.org/2/library/exceptions.html) or use the built-in `help(...)` or `dir(...)`\n",
       "functions) and decide which of Python's built-in exceptions is most appropriate\n",
       "to use for invalid input. Create a copy of 'tryexcept.py' called 'raiser.py'\n",
       "that raises this exception; modify the main body of your program to catch it;\n",
       "and add a comment inside the file explaining why you chose the exception you\n",
       "did. (Note: you have to call this file `raiser.py`, not `raise.py` because\n",
-      "'import raise' is an error. \u00c2 Can you see why?)\n",
+      "'import raise' is an error. Can you see why?)\n",
       "\n",
       "3. [According to Google](http://www.google.ca/search?q=20+miles+per+gallon+in+litres+per+100+km&gbv=1),\n",
       "20 miles per gallon are equivalent to 11.7607292 liters per 100 km. Use these\n",
       "values to write a unit test. Keep in mind that these floating values are subject\n",
       "to truncation and rounding errors. Save the test case in a file called\n",
-      "`test_mileage.py` and run it using the `nosetests` command. \u00c2 Note:\n",
+      "`test_mileage.py` and run it using the `nosetests` command. Note:\n",
       "`test_mileage.py` should use '`from raiser import convert_mileage`' to get the\n",
       "final version of your mileage conversion function.\n",
       "\n",
       "4. Now add a second test case, for 40 miles per gallon equivalent to 5.88036458\n",
-      "liters per 100 km and run the tests again. \u00c2 Unless you have already fixed the\n",
-      "error that was present in the initial function, your test should fail. \u00c2 Find\n",
+      "liters per 100 km and run the tests again. Unless you have already fixed the\n",
+      "error that was present in the initial function, your test should fail. Find\n",
       "and fix the error; submit your new function in a file called 'final_mileage.py'. "
      ]
     },