Merge pull request #1005 from patrick-austin/remove-dictionaries-from-errors

Remove dictionary references from 09-errors.md

Author: noatgnu

_episodes/09-errors.md

@@ -127,6 +127,75 @@ as it is possible to create custom errors.
 In that case,
 hopefully the custom error message is informative enough to help you figure out what went wrong.
 
+> ## Reading Error Messages
+>
+> Read the Python code and the resulting traceback below, and answer the following questions:
+>
+> 1.  How many levels does the traceback have?
+> 2.  What is the function name where the error occurred?
+> 3.  On which line number in this function did the error occur?
+> 4.  What is the type of error?
+> 5.  What is the error message?
+>
+> ~~~
+> # This code has an intentional error. Do not type it directly;
+> # use it for reference to understand the error message below.
+> def print_message(day):
+>     messages = [
+>         'Hello, world!',
+>         'Today is Tuesday!',
+>         'It is the middle of the week.',
+>         'Today is Donnerstag in German!',
+>         'Last day of the week!',
+>         'Hooray for the weekend!',
+>         'Aw, the weekend is almost over.'
+>     ]
+>     print(messages[day])
+> 
+> def print_sunday_message():
+>     print_message(7)
+> 
+> print_sunday_message()
+> ~~~
+> {: .language-python}
+>
+> ~~~
+> ---------------------------------------------------------------------------
+> IndexError                                Traceback (most recent call last)
+> <ipython-input-7-3ad455d81842> in <module>
+>      16     print_message(7)
+>      17 
+> ---> 18 print_sunday_message()
+>      19 
+> 
+> <ipython-input-7-3ad455d81842> in print_sunday_message()
+>      14 
+>      15 def print_sunday_message():
+> ---> 16     print_message(7)
+>      17 
+>      18 print_sunday_message()
+> 
+> <ipython-input-7-3ad455d81842> in print_message(day)
+>      11         'Aw, the weekend is almost over.'
+>      12     ]
+> ---> 13     print(messages[day])
+>      14 
+>      15 def print_sunday_message():
+> 
+> IndexError: list index out of range
+> ~~~
+> {: .error}
+>
+> > ## Solution
+> > 1. 3 levels
+> > 2. `print_message`
+> > 3. 13
+> > 4. `IndexError`
+> > 5. `list index out of range` You can then infer that
+> > `7` is not the right index to use with `messages`.
+> {: .solution}
+{: .challenge}
+=======
 > ## Better errors on newer Pythons
 >
 > Newer versions of Python have improved error printouts.  If you are debugging errors, it is often
@@ -440,74 +509,6 @@ If you get an error that you've never seen before,
 searching the Internet for that error type
 often reveals common reasons why you might get that error.
 
-> ## Reading Error Messages
->
-> Read the Python code and the resulting traceback below, and answer the following questions:
->
-> 1.  How many levels does the traceback have?
-> 2.  What is the function name where the error occurred?
-> 3.  On which line number in this function did the error occur?
-> 4.  What is the type of error?
-> 5.  What is the error message?
->
-> ~~~
-> # This code has an intentional error. Do not type it directly;
-> # use it for reference to understand the error message below.
-> def print_message(day):
->     messages = {
->         'monday': 'Hello, world!',
->         'tuesday': 'Today is Tuesday!',
->         'wednesday': 'It is the middle of the week.',
->         'thursday': 'Today is Donnerstag in German!',
->         'friday': 'Last day of the week!',
->         'saturday': 'Hooray for the weekend!',
->         'sunday': 'Aw, the weekend is almost over.'
->     }
->     print(messages[day])
->
-> def print_friday_message():
->     print_message('Friday')
->
-> print_friday_message()
-> ~~~
-> {: .language-python}
->
-> ~~~
-> ---------------------------------------------------------------------------
-> KeyError                                  Traceback (most recent call last)
-> <ipython-input-1-4be1945adbe2> in <module>()
->      14     print_message('Friday')
->      15
-> ---> 16 print_friday_message()
->
-> <ipython-input-1-4be1945adbe2> in print_friday_message()
->      12
->      13 def print_friday_message():
-> ---> 14     print_message('Friday')
->      15
->      16 print_friday_message()
->
-> <ipython-input-1-4be1945adbe2> in print_message(day)
->       9         'sunday': 'Aw, the weekend is almost over.'
->      10     }
-> ---> 11     print(messages[day])
->      12
->      13 def print_friday_message():
->
-> KeyError: 'Friday'
-> ~~~
-> {: .error}
->
-> > ## Solution
-> > 1. 3 levels
-> > 2. `print_message`
-> > 3. 11
-> > 4. `KeyError`
-> > 5. There isn't really a message; you're supposed
-> > to infer that `Friday` is not a key in `messages`.
-> {: .solution}
-{: .challenge}
-
 > ## Identifying Syntax Errors
 >
 > 1. Read the code below, and (without running it) try to identify what the errors are.