[python/en] Moved to default python2 print statements.

python.html.markdown

@@ -145,8 +145,10 @@ bool("")  # => False
 print "I'm Python. Nice to meet you!"
 # Python also has a print function, available in versions 2.7 and 3...
 # but for 2.7 you need to add the import (uncommented):
-# from __future__ import print_function
+from __future__ import print_function
 print("I'm also Python! ")
+# This is useful to maintain compatibility,
+# but for this doc, we'll use the python 2 print statement
 
 # No need to declare variables before assigning to them.
 some_var = 5    # Convention is to use lower_case_with_underscores
@@ -316,11 +318,11 @@ some_var = 5
 # Here is an if statement. Indentation is significant in python!
 # prints "some_var is smaller than 10"
 if some_var > 10:
-    print("some_var is totally bigger than 10.")
+    print "some_var is totally bigger than 10."
 elif some_var < 10:    # This elif clause is optional.
-    print("some_var is smaller than 10.")
+    print "some_var is smaller than 10."
 else:           # This is optional too.
-    print("some_var is indeed 10.")
+    print "some_var is indeed 10."
 
 
 """
@@ -332,7 +334,7 @@ prints:
 """
 for animal in ["dog", "cat", "mouse"]:
     # You can use % to interpolate formatted strings
-    print("%s is a mammal" % animal)
+    print "%s is a mammal" % animal
 
 """
 "range(number)" returns a list of numbers
@@ -344,7 +346,7 @@ prints:
     3
 """
 for i in range(4):
-    print(i)
+    print i
 
 """
 "range(lower, upper)" returns a list of numbers
@@ -356,7 +358,7 @@ prints:
     7
 """
 for i in range(4, 8):
-    print(i)
+    print i
 
 """
 While loops go until a condition is no longer met.
@@ -368,7 +370,7 @@ prints:
 """
 x = 0
 while x < 4:
-    print(x)
+    print x
     x += 1  # Shorthand for x = x + 1
 
 # Handle exceptions with a try/except block
@@ -391,7 +393,7 @@ else:   # Optional clause to the try/except block. Must follow all except blocks
 
 # Use "def" to create new functions
 def add(x, y):
-    print("x is %s and y is %s" % (x, y))
+    print "x is %s and y is %s" % (x, y)
     return x + y    # Return values with a return statement
 
 # Calling functions with parameters
@@ -420,8 +422,8 @@ keyword_args(big="foot", loch="ness")   # => {"big": "foot", "loch": "ness"}
 
 # You can do both at once, if you like
 def all_the_args(*args, **kwargs):
-    print(args)
-    print(kwargs)
+    print args
+    print kwargs
 """
 all_the_args(1, 2, a=3, b=4) prints:
     (1, 2)
@@ -517,10 +519,10 @@ class Human(object):
 
 # Instantiate a class
 i = Human(name="Ian")
-print(i.say("hi"))     # prints out "Ian: hi"
+print i.say("hi")     # prints out "Ian: hi"
 
 j = Human("Joel")
-print(j.say("hello"))  # prints out "Joel: hello"
+print j.say("hello")  # prints out "Joel: hello"
 
 # Call our class method
 i.get_species()   # => "H. sapiens"
@@ -540,12 +542,12 @@ Human.grunt()   # => "*grunt*"
 
 # You can import modules
 import math
-print(math.sqrt(16))  # => 4
+print math.sqrt(16)  # => 4
 
 # You can get specific functions from a module
 from math import ceil, floor
-print(ceil(3.7))  # => 4.0
-print(floor(3.7))   # => 3.0
+print ceil(3.7)  # => 4.0
+print floor(3.7)   # => 3.0
 
 # You can import all functions from a module.
 # Warning: this is not recommended
@@ -591,7 +593,7 @@ xrange_ = xrange(1, 900000000)
 
 # will double all numbers until a result >=30 found
 for i in double_numbers(xrange_):
-    print(i)
+    print i
     if i >= 30:
         break
 
@@ -620,8 +622,8 @@ def say(say_please=False):
     return msg, say_please
 
 
-print(say())  # Can you buy me a beer?
-print(say(say_please=True))  # Can you buy me a beer? Please! I am poor :(
+print say()  # Can you buy me a beer?
+print say(say_please=True)  # Can you buy me a beer? Please! I am poor :(
 ```
 
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