Adds a benchmarks directory with small scripts to test performances of things.

benchmarks/parameters.py

@@ -0,0 +1,44 @@
+"""
+Compare passing a dict to passing a dict as kwargs to a stupid transformation
+
+Last results (1 mill calls):
+
+j1 1.5026444319955772
+k1 1.8377482700016117
+j2 1.1962292949901894
+k2 1.5545833489886718
+j3 1.0014333260041894
+k3 1.353256585993222
+
+"""
+import json
+import timeit
+
+def j1(d):
+    return {'prepend': 'foo', **d, 'append': 'bar'}
+
+def k1(**d):
+    return {'prepend': 'foo', **d, 'append': 'bar'}
+
+def j2(d):
+    return {**d}
+
+def k2(**d):
+    return {**d}
+
+def j3(d):
+    return None
+
+def k3(**d):
+    return None
+
+if __name__ == '__main__':
+    import timeit
+
+    with open('person.json') as f:
+        json_data = json.load(f)
+
+
+    for i in 1,2,3:
+        print('j{}'.format(i), timeit.timeit("j{}({!r})".format(i, json_data), setup="from __main__ import j{}".format(i)))
+        print('k{}'.format(i), timeit.timeit("k{}(**{!r})".format(i, json_data), setup="from __main__ import k{}".format(i)))