More Python 3/PEP 8/PEP 257 compliance

Signed-off-by: Chris Warrick <kwpolska@gmail.com>

context_managers.rst

@@ -123,7 +123,7 @@ Let's try handling the exception in the ``__exit__`` method:
         def __enter__(self):
             return self.file_obj
         def __exit__(self, type, value, traceback):
-            print "Exception has been handled"
+            print("Exception has been handled")
             self.file_obj.close()
             return True
 

coroutines.rst

@@ -34,7 +34,7 @@ example would be a ``grep`` alternative in Python:
 .. code:: python
 
     def grep(pattern):
-        print "Searching for %s" % pattern
+        print("Searching for", pattern)
         while True:
             line = (yield)
             if pattern in line:

decorators.rst

@@ -30,7 +30,7 @@ First of all let's understand functions in python:
     # We are not using parentheses here because we are not calling the function hi
     # instead we are just putting it into the greet variable. Let's try to run this
 
-    print greet()
+    print(greet())
     # output: 'hi yasoob'
 
     # Let's see what happens if we delete the old hi function!
@@ -51,7 +51,7 @@ other functions:
 .. code:: python
 
     def hi(name="yasoob"):
-        print "now you are inside the hi() function"
+        print("now you are inside the hi() function")
 
         def greet():
             return "now you are in the greet() function"
@@ -131,11 +131,11 @@ Giving a function as an argument to another function:
         return "hi yasoob!"
 
     def doSomethingBeforeHi(func):
-        print("I am doing some  boring work before executing hi()")
+        print("I am doing some boring work before executing hi()")
         print(func())
 
     doSomethingBeforeHi(hi)
-    #outputs:I am doing some  boring work before executing hi()
+    #outputs:I am doing some boring work before executing hi()
     #        hi yasoob!
 
 Now you have all the required knowledge to learn what decorators really
@@ -152,7 +152,7 @@ previous decorator and make a little bit more usable program:
     def a_new_decorator(a_func):
 
         def wrapTheFunction():
-            print "I am doing some  boring work before executing a_func()"
+            print("I am doing some boring work before executing a_func()")
 
             a_func()
 
@@ -170,7 +170,7 @@ previous decorator and make a little bit more usable program:
     #now a_function_requiring_decoration is wrapped by wrapTheFunction()
 
     a_function_requiring_decoration()
-    #outputs:I am doing some  boring work before executing a_function_requiring_decoration()
+    #outputs:I am doing some boring work before executing a_function_requiring_decoration()
     #        I am the function which needs some decoration to remove my foul smell
     #        I am doing some boring work after executing a_function_requiring_decoration()
 
@@ -185,12 +185,12 @@ run the previous code sample using @.
 
     @a_new_decorator
     def a_function_requiring_decoration():
-        """Hey yo! Decorate me!"""
+        """Hey you! Decorate me!"""
         print("I am the function which needs some decoration to "
-              " remove my foul smell")
+              "remove my foul smell")
 
     a_function_requiring_decoration()
-    #outputs: I am doing some  boring work before executing a_function_requiring_decoration()
+    #outputs: I am doing some boring work before executing a_function_requiring_decoration()
     #         I am the function which needs some decoration to remove my foul smell
     #         I am doing some boring work after executing a_function_requiring_decoration()
 
@@ -219,7 +219,7 @@ that is ``functools.wraps``. Let's modify our previous example to use
     def a_new_decorator(a_func):
         @wraps(a_func)
         def wrapTheFunction():
-            print("I am doing some  boring work before executing a_func()")
+            print("I am doing some boring work before executing a_func()")
             a_func()
             print("I am doing some boring work after executing a_func()")
         return wrapTheFunction
@@ -236,7 +236,7 @@ that is ``functools.wraps``. Let's modify our previous example to use
 Now that is much better. Let's move on and learn some use-cases of
 decorators.
 
-**Blueprint :**
+**Blueprint:**
 
 .. code:: python
 
@@ -313,7 +313,7 @@ Logging is another area where the decorators shine. Here is an example:
 
     @logit
     def addition_func(x):
-       """does some math"""
+       """Do some math."""
        return x + x
 
 

for_-_else.rst

@@ -13,7 +13,7 @@ like this:
 
     fruits = ['apple', 'banana', 'mango']
     for fruit in fruits:
-        print fruit.capitalize()
+        print(fruit.capitalize())
 
     # Output: Apple
     #         Banana
@@ -60,7 +60,7 @@ documentation:
     for n in range(2, 10):
         for x in range(2, n):
             if n % x == 0:
-                print n, 'equals', x, '*', n/x
+                print(n, 'equals', x, '*', n/x)
                 break
 
 It finds factors for numbers between 2 to 10. Now for the fun part. We
@@ -72,9 +72,8 @@ prime and tells us so:
     for n in range(2, 10):
         for x in range(2, n):
             if n % x == 0:
-                print n, 'equals', x, '*', n/x
+                prin( n, 'equals', x, '*', n/x)
                 break
         else:
             # loop fell through without finding a factor
-            print n, 'is a prime number'
-
+            print(n, 'is a prime number')

ternary_operators.rst

@@ -39,8 +39,8 @@ is some sample code:
 .. code:: python
 
     fat = True
-    fitness = ("skinny","fat")[fat]
-    print("Ali is " + fitness)
+    fitness = ("skinny", "fat")[fat]
+    print("Ali is", fitness)
     # Output: Ali is fat
 
 The above example is not widely used and is generally disliked by