Update benchmarks for Python3 while retaining backwards compatibility with Python2

benchmark/carsales_proto.py

@@ -25,7 +25,7 @@ def random_car(car):
     car.length = 170 + rand_int(150)
     car.width = 48 + rand_int(36)
     car.height = 54 + rand_int(48)
-    car.weight = car.length * car.width * car.height / 200
+    car.weight = car.length * car.width * car.height // 200
 
     engine = car.engine
     engine.horsepower = 100 * rand_int(400)
@@ -51,7 +51,7 @@ def calc_value(car):
         result += wheel.diameter * wheel.diameter
         result += 100 if wheel.snow_tires else 0
 
-    result += car.length * car.width * car.height / 50
+    result += car.length * car.width * car.height // 50
 
     engine = car.engine
     result += engine.horsepower * 40

benchmark/carsales_pycapnp.py

@@ -25,7 +25,7 @@ def random_car(car):
     car.length = 170 + rand_int(150)
     car.width = 48 + rand_int(36)
     car.height = 54 + rand_int(48)
-    car.weight = car.length * car.width * car.height / 200
+    car.weight = car.length * car.width * car.height // 200
 
     engine = car.init('engine')
     engine.horsepower = 100 * rand_int(400)
@@ -51,7 +51,7 @@ def calc_value(car):
         result += wheel.diameter * wheel.diameter
         result += 100 if wheel.snowTires else 0
 
-    result += car.length * car.width * car.height / 50
+    result += car.length * car.width * car.height // 50
 
     engine = car.engine
     result += engine.horsepower * 40

benchmark/catrank_proto.py

@@ -2,8 +2,12 @@
 
 from common import rand_int, rand_double, rand_bool, WORDS, from_bytes_helper
 from random import choice
-from string import letters
+from string import ascii_letters
+try:
+  # Python 2
   from itertools import izip
+except ImportError:
+  izip = zip
 import catrank_pb2
 
 class Benchmark:
@@ -22,7 +26,7 @@ class Benchmark:
             result = request.result.add()
             result.score = 1000 - i
             url_size = rand_int(100)
-            result.url = "http://example.com/" + ''.join([choice(letters) for _ in range(url_size)])
+            result.url = "http://example.com/" + ''.join([choice(ascii_letters) for _ in range(url_size)])
 
             isCat = rand_bool()
             isDog = rand_bool()

benchmark/catrank_pycapnp.py

@@ -4,8 +4,12 @@ import capnp
 import catrank_capnp
 from common import rand_int, rand_double, rand_bool, WORDS
 from random import choice
-from string import letters
+from string import ascii_letters
+try:
+  # Python 2
   from itertools import izip
+except ImportError:
+  izip = zip
 
 class Benchmark:
     def __init__(self, compression):
@@ -29,7 +33,7 @@ class Benchmark:
         for i, result in enumerate(results):
             result.score = 1000 - i
             url_size = rand_int(100)
-            result.url = "http://example.com/" + ''.join([choice(letters) for _ in range(url_size)])
+            result.url = "http://example.com/" + ''.join([choice(ascii_letters) for _ in range(url_size)])
 
             isCat = rand_bool()
             isDog = rand_bool()

benchmark/eval_proto.py

@@ -28,7 +28,7 @@ def div(a, b):
     if a == MIN_INT and b == -1:
         return MAX_INT
 
-    return a / b
+    return a // b
 
 def mod(a, b):
     if b == 0:

benchmark/eval_pycapnp.py

@@ -29,7 +29,7 @@ def div(a, b):
     if a == MIN_INT and b == -1:
         return MAX_INT
 
-    return a / b
+    return a // b
 
 def mod(a, b):
     if b == 0: