[Python-Dev] New stringbench benchmark results (original) (raw)

Victor Stinner victor.stinner at haypocalc.com
Thu Oct 6 02:06:30 CEST 2011

Hi,

I optimized unicodeobject.c a little bit more where I saw major performance regressions from Python 3.2 to 3.3 using stringbench. Here are new results: see attachments. Example of tests where Python 3.3 is much slower:

"A".join(["Bob"]*100)): 2.11 => 0.92 ("C"+"AB"*300).rfind("CA"): 0.57 => 1.03 ("A" + ("Z"1281024)).replace("A", "BB", 1): 0.25 => 0.50

The rfind case is really strange: the code between Python 3.2 and 3.3 is exactly the same. Even in Python 3.2: rfind looks twice faster than find:

("AB"*300+"C").find("BC") (*1000) : 1.21 ("C"+"AB"*300).rfind("CA") (*1000) : 0.57

stringbench is ASCII only, I expect worse performance with non-ASCII characters. Python 3.3 is now faster for pure ASCII (faster than other "kinds" of Unicode string).

Hopefuly, Python 3.3 is faster in some stringbench tests, sometimes 2 times faster ;-)

Victor -------------- next part -------------- stringbench v2.0 3.3.0a0 (default:341c3002ffb2, Oct 6 2011, 01:52:36) [GCC 4.6.0 20110603 (Red Hat 4.6.0-10)] 2011-10-06 01:53:06.975247 bytes unicode (in ms) (in ms) % comment ========== case conversion -- dense 0.40 1.59 25.2 ("WHERE IN THE WORLD IS CARMEN SAN DEIGO?"*10).lower() (*1000) 0.42 1.55 27.3 ("where in the world is carmen san deigo?"*10).upper() (*1000) ========== case conversion -- rare 0.53 1.49 35.8 ("Where in the world is Carmen San Deigo?"*10).lower() (*1000) 0.44 1.55 28.5 ("wHERE IN THE WORLD IS cARMEN sAN dEIGO?"*10).upper() (*1000) ========== concat 20 strings of words length 4 to 15 1.25 1.44 86.8 s1+s2+s3+s4+...+s20 (*1000) ========== concat two strings 0.06 0.07 92.5 "Andrew"+"Dalke" (*1000) ========== count AACT substrings in DNA example 1.27 1.32 96.5 dna.count("AACT") (*10) ========== count newlines 0.53 0.51 103.3 ...text.with.2000.newlines.count("\n") (*10) ========== early match, single character 0.11 0.12 89.2 ("A"*1000).find("A") (*1000) 0.31 0.03 887.7 "A" in "A"*1000 (*1000) 0.11 0.12 90.7 ("A"*1000).index("A") (*1000) 0.13 0.14 94.4 ("A"*1000).partition("A") (*1000) 0.12 0.13 90.3 ("A"*1000).rfind("A") (*1000) 0.12 0.13 91.3 ("A"*1000).rindex("A") (*1000) 0.12 0.13 94.7 ("A"*1000).rpartition("A") (*1000) 0.28 0.27 102.0 ("A"*1000).rsplit("A", 1) (*1000) 0.29 0.28 103.4 ("A"*1000).split("A", 1) (*1000) ========== early match, two characters 0.11 0.13 90.5 ("AB"*1000).find("AB") (*1000) 0.31 0.04 799.5 "AB" in "AB"*1000 (*1000) 0.11 0.13 89.2 ("AB"*1000).index("AB") (*1000) 0.15 0.16 97.9 ("AB"*1000).partition("AB") (*1000) 0.12 0.14 90.0 ("AB"*1000).rfind("AB") (*1000) 0.12 0.13 92.8 ("AB"*1000).rindex("AB") (*1000) 0.14 0.15 93.3 ("AB"*1000).rpartition("AB") (*1000) 0.31 0.30 101.4 ("AB"*1000).rsplit("AB", 1) (*1000) 0.32 0.32 101.0 ("AB"*1000).split("AB", 1) (*1000) ========== endswith multiple characters 0.13 0.13 96.1 "Andrew".endswith("Andrew") (*1000) ========== endswith multiple characters - not! 0.13 0.12 108.4 "Andrew".endswith("Anders") (*1000) ========== endswith single character 0.13 0.13 94.9 "Andrew".endswith("w") (*1000) ========== formatting a string type with a dict N/A 0.52 0.0 "The %(k1)s is %(k2)s the %(k3)s."%{"k1":"x","k2":"y","k3":"z",} (*1000) ========== join empty string, with 1 character sep N/A 0.04 0.0 "A".join("") (*100) ========== join empty string, with 5 character sep N/A 0.04 0.0 "ABCDE".join("") (*100) ========== join list of 100 words, with 1 character sep 1.10 2.11 52.3 "A".join(["Bob"]*100)) (*1000) ========== join list of 100 words, with 5 character sep 1.16 2.29 50.9 "ABCDE".join(["Bob"]*100)) (*1000) ========== join list of 26 characters, with 1 character sep 0.31 0.60 51.3 "A".join(list("ABC..Z")) (*1000) ========== join list of 26 characters, with 5 character sep 0.34 0.60 56.5 "ABCDE".join(list("ABC..Z")) (*1000) ========== join string with 26 characters, with 1 character sep N/A 1.23 0.0 "A".join("ABC..Z") (*1000) ========== join string with 26 characters, with 5 character sep N/A 1.21 0.0 "ABCDE".join("ABC..Z") (*1000) ========== late match, 100 characters 8.88 8.52 104.1 s="ABC"*33; ((s+"D")*500+s+"E").find(s+"E") (*100) 3.48 3.53 98.5 s="ABC"*33; ((s+"D")*500+"E"+s).find("E"+s) (*100) 5.33 5.28 100.9 s="ABC"*33; (s+"E") in ((s+"D")*300+s+"E") (*100) 8.88 8.60 103.2 s="ABC"*33; ((s+"D")*500+s+"E").index(s+"E") (*100) 9.24 9.24 100.0 s="ABC"*33; ((s+"D")*500+s+"E").partition(s+"E") (*100) 7.86 7.61 103.4 s="ABC"*33; ("E"+s+("D"+s)*500).rfind("E"+s) (*100) 1.76 1.98 88.9 s="ABC"*33; (s+"E"+("D"+s)*500).rfind(s+"E") (*100) 7.67 7.53 101.9 s="ABC"*33; ("E"+s+("D"+s)*500).rindex("E"+s) (*100) 7.88 7.74 101.9 s="ABC"*33; ("E"+s+("D"+s)*500).rpartition("E"+s) (*100) 8.22 8.22 100.0 s="ABC"*33; ("E"+s+("D"+s)*500).rsplit("E"+s, 1) (*100) 9.12 9.09 100.3 s="ABC"*33; ((s+"D")*500+s+"E").split(s+"E", 1) (*100) ========== late match, two characters 1.19 1.16 103.1 ("AB"*300+"C").find("BC") (*1000) 1.18 1.18 99.2 ("AB"*300+"CA").find("CA") (*1000) 1.38 1.10 125.7 "BC" in ("AB"*300+"C") (*1000) 1.21 1.16 104.2 ("AB"*300+"C").index("BC") (*1000) 1.18 1.21 98.2 ("AB"*300+"C").partition("BC") (*1000) 1.06 1.03 102.3 ("C"+"AB"*300).rfind("CA") (*1000) 0.70 0.71 98.7 ("BC"+"AB"*300).rfind("BC") (*1000) 1.04 1.03 100.9 ("C"+"AB"*300).rindex("CA") (*1000) 1.03 1.05 97.6 ("C"+"AB"*300).rpartition("CA") (*1000) 1.24 1.19 103.8 ("C"+"AB"*300).rsplit("CA", 1) (*1000) 1.29 1.34 96.0 ("AB"*300+"C").split("BC", 1) (*1000) ========== no match, single character 0.67 0.68 98.1 ("A"*1000).find("B") (*1000) 0.86 0.59 145.4 "B" in "A"*1000 (*1000) 0.60 0.61 98.2 ("A"*1000).partition("B") (*1000) 0.68 0.68 98.8 ("A"*1000).rfind("B") (*1000) 0.61 0.62 99.5 ("A"*1000).rpartition("B") (*1000) 0.71 0.71 100.2 ("A"*1000).rsplit("B", 1) (*1000) 0.70 0.70 99.9 ("A"*1000).split("B", 1) (*1000) ========== no match, two characters 3.64 3.50 103.9 ("AB"*1000).find("BC") (*1000) 3.70 3.59 103.1 ("AB"*1000).find("CA") (*1000) 3.86 3.56 108.4 "BC" in "AB"*1000 (*1000) 3.57 3.69 96.9 ("AB"*1000).partition("BC") (*1000) 2.04 2.04 100.0 ("AB"*1000).rfind("BC") (*1000) 3.17 3.14 100.7 ("AB"*1000).rfind("CA") (*1000) 1.99 2.12 94.2 ("AB"*1000).rpartition("BC") (*1000) 2.31 2.33 99.2 ("AB"*1000).rsplit("BC", 1) (*1000) 3.75 3.74 100.1 ("AB"*1000).split("BC", 1) (*1000) ========== quick replace multiple character match 0.06 0.49 11.3 ("A" + ("Z"1281024)).replace("AZZ", "BBZZ", 1) (*10) ========== quick replace single character match 0.05 0.50 11.0 ("A" + ("Z"1281024)).replace("A", "BB", 1) (*10) ========== repeat 1 character 10 times 0.06 0.07 86.0 "A"*10 (*1000) ========== repeat 1 character 1000 times 0.11 0.12 91.4 "A"*1000 (*1000) ========== repeat 5 characters 10 times 0.07 0.08 85.3 "ABCDE"*10 (*1000) ========== repeat 5 characters 1000 times 0.21 0.23 91.4 "ABCDE"*1000 (*1000) ========== replace and expand multiple characters, big string 0.83 1.80 46.0 "...text.with.2000.newlines...replace("\n", "\r\n") (*10) ========== replace multiple characters, dna 1.63 2.35 69.3 dna.replace("ATC", "ATT") (*10) ========== replace single character 0.13 0.17 73.9 "This is a test".replace(" ", "\t") (*1000) ========== replace single character, big string 0.23 1.37 16.5 "...text.with.2000.lines...replace("\n", " ") (*10) ========== replace/remove multiple characters 0.20 0.27 74.7 "When shall we three meet again?".replace("ee", "") (*1000) ========== split 1 whitespace 0.08 0.11 78.6 ("Here are some words. "*2).partition(" ") (*1000) 0.07 0.08 84.3 ("Here are some words. "*2).rpartition(" ") (*1000) 0.19 0.21 91.0 ("Here are some words. "*2).rsplit(None, 1) (*1000) 0.18 0.20 93.2 ("Here are some words. "*2).split(None, 1) (*1000) ========== split 2000 newlines 1.27 1.51 83.9 "...text...".rsplit("\n") (*10) 1.21 1.32 91.4 "...text...".split("\n") (*10) 1.44 1.71 84.1 "...text...".splitlines() (*10) ========== split newlines 0.22 0.27 82.9 "this\nis\na\ntest\n".rsplit("\n") (*1000) 0.22 0.24 91.4 "this\nis\na\ntest\n".split("\n") (*1000) 0.20 0.24 82.4 "this\nis\na\ntest\n".splitlines() (*1000) ========== split on multicharacter separator (dna) 1.09 1.10 98.8 dna.rsplit("ACTAT") (*10) 1.48 1.43 103.4 dna.split("ACTAT") (*10) ========== split on multicharacter separator (small) 0.40 0.46 88.4 "this--is--a--test--of--the--emergency--broadcast--system".rsplit("--") (*1000) 0.39 0.45 87.0 "this--is--a--test--of--the--emergency--broadcast--system".split("--") (*1000) ========== split whitespace (huge) 1.24 1.44 86.1 human_text.rsplit() (*10) 1.11 1.35 82.6 human_text.split() (*10) ========== split whitespace (small) 0.34 0.38 89.5 ("Here are some words. "*2).rsplit() (*1000) 0.32 0.37 85.8 ("Here are some words. "*2).split() (*1000) ========== startswith multiple characters 0.12 0.13 94.5 "Andrew".startswith("Andrew") (*1000) ========== startswith multiple characters - not! 0.12 0.11 109.7 "Andrew".startswith("Anders") (*1000) ========== startswith single character 0.12 0.13 95.4 "Andrew".startswith("A") (*1000) ========== strip terminal newline 0.06 0.16 39.1 s="Hello!\n"; s[:-1] if s[-1]=="\n" else s (*1000) 0.05 0.06 77.6 "\nHello!".rstrip() (*1000) 0.05 0.06 77.0 "Hello!\n".rstrip() (*1000) 0.05 0.07 74.4 "\nHello!\n".strip() (*1000) 0.05 0.06 75.8 "\nHello!".strip() (*1000) 0.05 0.06 75.3 "Hello!\n".strip() (*1000) ========== strip terminal spaces and tabs 0.05 0.07 70.1 "\t \tHello".rstrip() (*1000) 0.05 0.07 76.5 "Hello\t \t".rstrip() (*1000) 0.03 0.04 78.7 "Hello\t \t".strip() (*1000) ========== tab split 0.36 0.48 75.4 GFF3_example.rsplit("\t", 8) (*1000) 0.34 0.46 73.2 GFF3_example.rsplit("\t") (*1000) 0.30 0.42 70.5 GFF3_example.split("\t", 8) (*1000) 0.32 0.43 73.4 GFF3_example.split("\t") (*1000) 152.32 166.34 91.6 TOTAL -------------- next part -------------- stringbench v2.0 3.2.2+ (3.2:125887a41a6f, Oct 5 2011, 22:29:03) [GCC 4.6.0 20110603 (Red Hat 4.6.0-10)] 2011-10-05 22:48:28.819039 bytes unicode (in ms) (in ms) % comment ========== case conversion -- dense 0.44 1.46 30.0 ("WHERE IN THE WORLD IS CARMEN SAN DEIGO?"*10).lower() (*1000) 0.46 1.38 33.3 ("where in the world is carmen san deigo?"*10).upper() (*1000) ========== case conversion -- rare 0.59 1.40 42.1 ("Where in the world is Carmen San Deigo?"*10).lower() (*1000) 0.48 1.40 34.1 ("wHERE IN THE WORLD IS cARMEN sAN dEIGO?"*10).upper() (*1000) ========== concat 20 strings of words length 4 to 15 1.26 1.50 83.7 s1+s2+s3+s4+...+s20 (*1000) ========== concat two strings 0.06 0.05 129.1 "Andrew"+"Dalke" (*1000) ========== count AACT substrings in DNA example 1.26 1.27 99.6 dna.count("AACT") (*10) ========== count newlines 0.53 0.53 99.1 ...text.with.2000.newlines.count("\n") (*10) ========== early match, single character 0.12 0.12 101.5 ("A"*1000).find("A") (*1000) 0.32 0.03 1139.8 "A" in "A"*1000 (*1000) 0.12 0.12 104.4 ("A"*1000).index("A") (*1000) 0.13 0.20 66.6 ("A"*1000).partition("A") (*1000) 0.13 0.12 103.5 ("A"*1000).rfind("A") (*1000) 0.13 0.12 102.9 ("A"*1000).rindex("A") (*1000) 0.13 0.20 63.2 ("A"*1000).rpartition("A") (*1000) 0.29 0.34 84.8 ("A"*1000).rsplit("A", 1) (*1000) 0.29 0.35 82.4 ("A"*1000).split("A", 1) (*1000) ========== early match, two characters 0.12 0.12 103.2 ("AB"*1000).find("AB") (*1000) 0.32 0.03 1050.5 "AB" in "AB"*1000 (*1000) 0.12 0.12 103.4 ("AB"*1000).index("AB") (*1000) 0.15 0.26 60.0 ("AB"*1000).partition("AB") (*1000) 0.13 0.12 104.1 ("AB"*1000).rfind("AB") (*1000) 0.13 0.13 101.9 ("AB"*1000).rindex("AB") (*1000) 0.15 0.25 60.7 ("AB"*1000).rpartition("AB") (*1000) 0.31 0.42 73.4 ("AB"*1000).rsplit("AB", 1) (*1000) 0.32 0.42 76.7 ("AB"*1000).split("AB", 1) (*1000) ========== endswith multiple characters 0.13 0.15 89.1 "Andrew".endswith("Andrew") (*1000) ========== endswith multiple characters - not! 0.13 0.11 111.1 "Andrew".endswith("Anders") (*1000) ========== endswith single character 0.12 0.13 95.1 "Andrew".endswith("w") (*1000) ========== formatting a string type with a dict N/A 0.43 0.0 "The %(k1)s is %(k2)s the %(k3)s."%{"k1":"x","k2":"y","k3":"z",} (*1000) ========== join empty string, with 1 character sep N/A 0.04 0.0 "A".join("") (*100) ========== join empty string, with 5 character sep N/A 0.04 0.0 "ABCDE".join("") (*100) ========== join list of 100 words, with 1 character sep 1.13 0.92 122.6 "A".join(["Bob"]*100)) (*1000) ========== join list of 100 words, with 5 character sep 1.17 0.96 122.0 "ABCDE".join(["Bob"]*100)) (*1000) ========== join list of 26 characters, with 1 character sep 0.32 0.27 118.2 "A".join(list("ABC..Z")) (*1000) ========== join list of 26 characters, with 5 character sep 0.32 0.32 100.9 "ABCDE".join(list("ABC..Z")) (*1000) ========== join string with 26 characters, with 1 character sep N/A 0.93 0.0 "A".join("ABC..Z") (*1000) ========== join string with 26 characters, with 5 character sep N/A 1.00 0.0 "ABCDE".join("ABC..Z") (*1000) ========== late match, 100 characters 8.73 8.80 99.2 s="ABC"*33; ((s+"D")*500+s+"E").find(s+"E") (*100) 3.44 3.49 98.5 s="ABC"*33; ((s+"D")*500+"E"+s).find("E"+s) (*100) 5.41 5.37 100.8 s="ABC"*33; (s+"E") in ((s+"D")*300+s+"E") (*100) 9.04 9.01 100.3 s="ABC"*33; ((s+"D")*500+s+"E").index(s+"E") (*100) 8.91 10.90 81.7 s="ABC"*33; ((s+"D")*500+s+"E").partition(s+"E") (*100) 7.49 3.48 215.0 s="ABC"*33; ("E"+s+("D"+s)*500).rfind("E"+s) (*100) 1.81 1.95 92.7 s="ABC"*33; (s+"E"+("D"+s)*500).rfind(s+"E") (*100) 7.71 3.90 197.4 s="ABC"*33; ("E"+s+("D"+s)*500).rindex("E"+s) (*100) 7.77 4.23 184.0 s="ABC"*33; ("E"+s+("D"+s)*500).rpartition("E"+s) (*100) 8.18 4.25 192.4 s="ABC"*33; ("E"+s+("D"+s)*500).rsplit("E"+s, 1) (*100) 9.22 9.93 92.9 s="ABC"*33; ((s+"D")*500+s+"E").split(s+"E", 1) (*100) ========== late match, two characters 1.23 1.21 101.5 ("AB"*300+"C").find("BC") (*1000) 1.19 1.16 101.9 ("AB"*300+"CA").find("CA") (*1000) 1.38 1.08 128.6 "BC" in ("AB"*300+"C") (*1000) 1.19 1.18 100.6 ("AB"*300+"C").index("BC") (*1000) 1.19 1.38 86.1 ("AB"*300+"C").partition("BC") (*1000) 1.05 0.57 184.5 ("C"+"AB"*300).rfind("CA") (*1000) 0.70 0.70 99.7 ("BC"+"AB"*300).rfind("BC") (*1000) 1.04 0.58 181.4 ("C"+"AB"*300).rindex("CA") (*1000) 1.03 0.61 168.3 ("C"+"AB"*300).rpartition("CA") (*1000) 1.24 0.77 161.1 ("C"+"AB"*300).rsplit("CA", 1) (*1000) 1.32 1.39 95.1 ("AB"*300+"C").split("BC", 1) (*1000) ========== no match, single character 0.68 0.68 100.2 ("A"*1000).find("B") (*1000) 0.89 0.59 151.2 "B" in "A"*1000 (*1000) 0.60 0.60 99.9 ("A"*1000).partition("B") (*1000) 0.69 0.68 100.8 ("A"*1000).rfind("B") (*1000) 0.61 0.60 100.9 ("A"*1000).rpartition("B") (*1000) 0.71 0.72 99.2 ("A"*1000).rsplit("B", 1) (*1000) 0.71 0.70 101.7 ("A"*1000).split("B", 1) (*1000) ========== no match, two characters 3.69 3.65 101.3 ("AB"*1000).find("BC") (*1000) 3.64 3.63 100.3 ("AB"*1000).find("CA") (*1000) 3.87 3.54 109.2 "BC" in "AB"*1000 (*1000) 3.58 4.12 87.0 ("AB"*1000).partition("BC") (*1000) 2.05 2.02 101.6 ("AB"*1000).rfind("BC") (*1000) 3.16 1.62 195.0 ("AB"*1000).rfind("CA") (*1000) 2.02 2.03 99.6 ("AB"*1000).rpartition("BC") (*1000) 2.36 2.15 109.8 ("AB"*1000).rsplit("BC", 1) (*1000) 3.66 3.67 99.9 ("AB"*1000).split("BC", 1) (*1000) ========== quick replace multiple character match 0.06 0.28 19.9 ("A" + ("Z"1281024)).replace("AZZ", "BBZZ", 1) (*10) ========== quick replace single character match 0.05 0.25 21.2 ("A" + ("Z"1281024)).replace("A", "BB", 1) (*10) ========== repeat 1 character 10 times 0.06 0.06 90.5 "A"*10 (*1000) ========== repeat 1 character 1000 times 0.10 0.19 54.6 "A"*1000 (*1000) ========== repeat 5 characters 10 times 0.07 0.08 90.7 "ABCDE"*10 (*1000) ========== repeat 5 characters 1000 times 0.20 0.51 39.9 "ABCDE"*1000 (*1000) ========== replace and expand multiple characters, big string 0.84 1.69 49.7 "...text.with.2000.newlines...replace("\n", "\r\n") (*10) ========== replace multiple characters, dna 1.66 1.90 87.3 dna.replace("ATC", "ATT") (*10) ========== replace single character 0.13 0.14 95.0 "This is a test".replace(" ", "\t") (*1000) ========== replace single character, big string 0.22 0.65 34.6 "...text.with.2000.lines...replace("\n", " ") (*10) ========== replace/remove multiple characters 0.20 0.23 90.5 "When shall we three meet again?".replace("ee", "") (*1000) ========== split 1 whitespace 0.08 0.08 91.6 ("Here are some words. "*2).partition(" ") (*1000) 0.06 0.08 83.8 ("Here are some words. "*2).rpartition(" ") (*1000) 0.21 0.24 87.0 ("Here are some words. "*2).rsplit(None, 1) (*1000) 0.20 0.21 95.1 ("Here are some words. "*2).split(None, 1) (*1000) ========== split 2000 newlines 1.29 1.90 67.9 "...text...".rsplit("\n") (*10) 1.22 1.75 70.1 "...text...".split("\n") (*10) 1.45 1.99 72.8 "...text...".splitlines() (*10) ========== split newlines 0.24 0.20 117.2 "this\nis\na\ntest\n".rsplit("\n") (*1000) 0.23 0.20 115.6 "this\nis\na\ntest\n".split("\n") (*1000) 0.21 0.20 105.6 "this\nis\na\ntest\n".splitlines() (*1000) ========== split on multicharacter separator (dna) 1.09 0.85 128.6 dna.rsplit("ACTAT") (*10) 1.47 1.60 91.5 dna.split("ACTAT") (*10) ========== split on multicharacter separator (small) 0.42 0.45 93.5 "this--is--a--test--of--the--emergency--broadcast--system".rsplit("--") (*1000) 0.42 0.38 110.1 "this--is--a--test--of--the--emergency--broadcast--system".split("--") (*1000) ========== split whitespace (huge) 1.21 1.61 75.5 human_text.rsplit() (*10) 1.13 1.67 67.3 human_text.split() (*10) ========== split whitespace (small) 0.35 0.34 100.9 ("Here are some words. "*2).rsplit() (*1000) 0.33 0.31 106.1 ("Here are some words. "*2).split() (*1000) ========== startswith multiple characters 0.13 0.14 91.7 "Andrew".startswith("Andrew") (*1000) ========== startswith multiple characters - not! 0.13 0.11 114.9 "Andrew".startswith("Anders") (*1000) ========== startswith single character 0.13 0.13 97.9 "Andrew".startswith("A") (*1000) ========== strip terminal newline 0.06 0.13 47.5 s="Hello!\n"; s[:-1] if s[-1]=="\n" else s (*1000) 0.04 0.04 107.5 "\nHello!".rstrip() (*1000) 0.05 0.04 105.7 "Hello!\n".rstrip() (*1000) 0.05 0.05 100.0 "\nHello!\n".strip() (*1000) 0.04 0.04 100.8 "\nHello!".strip() (*1000) 0.05 0.04 105.8 "Hello!\n".strip() (*1000) ========== strip terminal spaces and tabs 0.05 0.04 102.1 "\t \tHello".rstrip() (*1000) 0.05 0.05 104.7 "Hello\t \t".rstrip() (*1000) 0.03 0.03 90.3 "Hello\t \t".strip() (*1000) ========== tab split 0.35 0.37 92.7 GFF3_example.rsplit("\t", 8) (*1000) 0.33 0.36 92.9 GFF3_example.rsplit("\t") (*1000) 0.30 0.31 96.5 GFF3_example.split("\t", 8) (*1000) 0.31 0.33 94.3 GFF3_example.split("\t") (*1000) 152.31 146.96 103.6 TOTAL

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