Weekly backup.

20220416112952-timethese.org

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+:PROPERTIES:
+:ID:       4e351659-8a96-44af-bacb-f548ea35913e
+:mtime:    20220416113532
+:ctime:    20220416112952
+:END:
+#+title: timethese
+
+* Introduction
+ * Package permettant de mesurer les temps nécessaires à l'exécution de plusieurs méthodes et de les comparer.
+ * Approche en 3 étapes :
+   * Définition des méthodes à benchmarker,
+   * Préparation et exécution des tests (usage de la classe /cmpthese/),
+   * Formattage des résultas (pretty print).
+ 
+* Installation
+#+BEGIN_SRC shell
+pip install timethese
+#+END_SRC
+
+* Exemple
+#+BEGIN_SRC python :results output
+from timethese import cmpthese, pprint_cmp, timethese
+
+xs = range(10)
+
+
+# 1. DEFINE FUNCTIONS
+
+def map_hex():
+    list(map(hex, xs))
+
+
+def list_compr_hex():
+    list([hex(x) for x in xs])
+
+
+def map_lambda():
+    list(map(lambda x: x + 2, xs))
+
+
+def map_lambda_fn():
+    fn = lambda x: x + 2
+    list(map(fn, xs))
+
+
+def list_compr_nofn():
+    list([x + 2 for x in xs])
+
+
+# 2. FEED THE FUNCTIONS TO CMPTHESE
+
+# AS DICT:
+
+cmp_res_dict = cmpthese(
+    10000,
+    {
+        "map_hex": map_hex,
+        "list_compr_hex": list_compr_hex,
+        "map_lambda": map_lambda,
+        "map_lambda_fn": map_lambda_fn,
+        "list_compr_nofn": list_compr_nofn,
+    },
+    repeat=3,
+)
+
+
+# OR AS LIST:
+
+cmp_res_list = cmpthese(
+    10000, [map_hex, list_compr_hex, map_lambda, map_lambda_fn, list_compr_nofn,], repeat=3,
+)
+
+# 3. PRETTY PRINT THE RESULTS
+
+print(pprint_cmp(cmp_res_dict))
+print(pprint_cmp(cmp_res_list))
+#+END_SRC
+
+#+RESULTS:
+#+begin_example
+                      Rate  list_compr_nofn  map_hex  map_lambda  map_lambda_fn  list_compr_hex
+list_compr_nofn  1889389/s                .      21%         42%            45%             68%
+        map_hex  1565635/s             -17%        .         18%            21%             40%
+     map_lambda  1328914/s             -30%     -15%           .             2%             18%
+  map_lambda_fn  1298638/s             -31%     -17%         -2%              .             16%
+ list_compr_hex  1121963/s             -41%     -28%        -16%           -14%               .
+                        Rate  4.list_compr_nofn  0.map_hex  3.map_lambda_fn  2.map_lambda  1.list_compr_hex
+4.list_compr_nofn  1836243/s                  .        17%              37%           38%               73%
+        0.map_hex  1568271/s               -15%          .              17%           18%               47%
+  3.map_lambda_fn  1336453/s               -27%       -15%                .            0%               26%
+     2.map_lambda  1334377/s               -27%       -15%              -0%             .               25%
+ 1.list_compr_hex  1063984/s               -42%       -32%             -20%          -20%                 .
+#+end_example
+
+* Références
+ * [[https://github.com/jwbargsten/python-timethese][Github]]