Simplify code by dropping support for legacy Python (#1143)

* Simplify code by dropping support for legacy Python

* sort() --> sorted()

hashes/chaos_machine.py

@@ -1,10 +1,4 @@
 """example of simple chaos machine"""
-from __future__ import print_function
-
-try:
-  input = raw_input  # Python 2
-except NameError:
-  pass               # Python 3
 
 # Chaos Machine (K, t, m)
 K = [0.33, 0.44, 0.55, 0.44, 0.33]; t = 3; m = 5
@@ -96,7 +90,7 @@ message = random.sample(range(0xFFFFFFFF), 100)
 for chunk in message:
   push(chunk)
 
-# for controlling 
+# for controlling
 inp = ""
 
 # Pulling Data (Output)

hashes/enigma_machine.py

@@ -1,5 +1,3 @@
-from __future__ import print_function
-
 alphabets = [chr(i) for i in range(32, 126)]
 gear_one = [i for i in range(len(alphabets))]
 gear_two = [i for i in range(len(alphabets))]

hashes/md5.py

@@ -1,4 +1,3 @@
-from __future__ import print_function
 import math
 
 
@@ -66,7 +65,7 @@ def getBlock(bitString):
     """[summary]
     Iterator:
             Returns by each call a list of length 16 with the 32 bit
-            integer blocks. 
+            integer blocks.
 
     Arguments:
             bitString {[string]} -- [binary string >= 512]
@@ -95,7 +94,7 @@ def not32(i):
 
 def sum32(a, b):
     '''
-    
+
     '''
     return (a + b) % 2**32