tweaks to the python challenges

challenges/context_managers.py

@@ -24,6 +24,9 @@ def release_lock(lock_name):
 to use "with open" -- that's actually already a context manager.
 Building our own might take away some of the air of mystery from it...
 
+So we want to run "hold_lock" before each function starts, and
+"release_lock" at the end.
+
 So you could use a decorator, but what if the function
 raises an exception?  now you have to have a try/except
 and it gets yucky...

challenges/decorators.py

@@ -12,14 +12,6 @@
 For bonus points: the little time printout should include the name
 of the function
 
-For bonus bonus points:
-- make a decorator that will retry a function up to n times, until
-it gets a certain value:
-
-    @repeat(times=5, until_value=True)
-    def somebody_set_us_up_the_bomb():
-    ...
-
 """
 
 from datetime import datetime
@@ -44,3 +36,15 @@ def take_off_every_zig():
     for i in range(1, 10001):
         print('Go {}! '.format(i), end='')
 
+
+"""
+For bonus bonus points:
+
+- now make a new decorator that will retry a function up to n times, until
+it gets a certain value:
+
+    @repeat(times=5, until_value=True)
+    def somebody_set_us_up_the_bomb():
+    ...
+"""
+

challenges/magic_methods.py

@@ -3,6 +3,9 @@
 """
 Challenge:  the Pythonic card deck class
 
+The class CardDeck below represents a pack
+of cards.
+
 Find out how to use magic methods so that the
 following three standard functions work:
 
@@ -22,7 +25,6 @@
 
 
 class CardDeck:
-
     ranks = [str(n) for n in range(2, 11)] + ['J', 'Q', 'K', 'A']
     suits = '♠♡♢♣'