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Python study notes: timeit calculated using the time-consuming function call
A, timeit module Introduction
Timer object contains two parameters: The first parameter is a Python statement that you want to timing, the second argument to run a test build.
By default timeit will return the number of seconds to perform a million times, you can understand how many microseconds to execute a return. There are a number timeit parameter can be set to 1000, then the return time of the unit is ms.
Second, case presentations
1, time-consuming factorial
operation result:
1! executing time: 0.0006161999999960699 milliseconds
2! executing time: 0.0006439999999940937 milliseconds
3! executing time: 0.0006774000000007163 milliseconds
4! executing time: 0.0007241999999791915 milliseconds
5! executing time: 0.0007625000000075488 milliseconds
6! executing time: 0.0014218999999968673 milliseconds
7! executing time: 0.0008945999999809828 milliseconds
8! executing time: 0.0009628999999904408 milliseconds
9! executing time: 0.0010600999999894611 milliseconds
10! executing time: 0.0011124000000108936 milliseconds
11! executing time: 0.0027358999999762545 milliseconds
12! executing time: 0.0012527000000090993 milliseconds
13! executing time: 0.0012741000000175973 milliseconds
14! executing time: 0.0023416999999881227 milliseconds
15! executing time: 0.0027690000000006876 milliseconds
16! executing time: 0.0037630999999862524 milliseconds
17! executing time: 0.0016303999999820462 milliseconds
18! executing time: 0.0017330000000015389 milliseconds
19! executing time: 0.0022575999999787655 milliseconds
20! executing time: 0.0028788999999846965 milliseconds
21! executing time: 0.002625600000015993 milliseconds
22! executing time: 0.0020728000000076463 milliseconds
23! executing time: 0.0022077000000138014 milliseconds
24! executing time: 0.002774299999998675 milliseconds
25! executing time: 0.002434599999986631 milliseconds
26! executing time: 0.002475099999998065 milliseconds
27! executing time: 0.0030888000000004467 milliseconds
28! executing time: 0.0026891999999918426 milliseconds
29! executing time: 0.003031700000008186 milliseconds
30! executing time: 0.0029704000000094766 milliseconds
31! executing time: 0.0036570999999980813 milliseconds
32! executing time: 0.0029528999999968164 milliseconds
33! executing time: 0.0033359999999902357 milliseconds
34! executing time: 0.0032547000000135995 milliseconds
35! executing time: 0.005373399999996309 milliseconds
36! executing time: 0.00503609999998389 milliseconds
37! executing time: 0.00511069999998881 milliseconds
38! executing time: 0.003444900000005191 milliseconds
39! executing time: 0.003606900000022506 milliseconds
40! executing time: 0.004605599999990773 milliseconds
41! executing time: 0.006797500000004675 milliseconds
42! executing time: 0.006650899999982585 milliseconds
43! executing time: 0.0039322999999740205 milliseconds
44! executing time: 0.00446339999999168 milliseconds
45! executing time: 0.004669699999993782 milliseconds
46! executing time: 0.005191400000001067 milliseconds
47! executing time: 0.004766899999992802 milliseconds
48! executing time: 0.004702500000007603 milliseconds
49! executing time: 0.004529599999983702 milliseconds
50! executing time: 0.004823899999990999 milliseconds
51! executing time: 0.00676319999999464 milliseconds
52! executing time: 0.007806900000019823 milliseconds
53! executing time: 0.007745200000016439 milliseconds
54! executing time: 0.005193399999996018 milliseconds
55! executing time: 0.0075526000000252225 milliseconds
56! executing time: 0.008500800000007303 milliseconds
57! executing time: 0.006352100000015071 milliseconds
58! executing time: 0.009804000000002588 milliseconds
59! executing time: 0.005712499999987131 milliseconds
60! executing time: 0.005463999999989255 milliseconds
61! executing time: 0.006630599999994047 milliseconds
62! executing time: 0.00636679999999501 milliseconds
63! executing time: 0.0069296000000065305 milliseconds
64! executing time: 0.006213199999990593 milliseconds
65! executing time: 0.008552299999990964 milliseconds
66! executing time: 0.00903500000001145 milliseconds
67! executing time: 0.010822299999972529 milliseconds
68! executing time: 0.008465499999999793 milliseconds
69! executing time: 0.012770700000004354 milliseconds
70! executing time: 0.013791300000008277 milliseconds
71! executing time: 0.009824400000013611 milliseconds
72! executing time: 0.010767999999984568 milliseconds
73! executing time: 0.010198600000023816 milliseconds
74! executing time: 0.013151499999992211 milliseconds
75! executing time: 0.010155600000018694 milliseconds
76! executing time: 0.008703800000006368 milliseconds
77! executing time: 0.007793899999995801 milliseconds
78! executing time: 0.009978199999977733 milliseconds
79! executing time: 0.009008399999999028 milliseconds
80! executing time: 0.008965000000017653 milliseconds
81! executing time: 0.008167799999995395 milliseconds
82! executing time: 0.00777859999999464 milliseconds
83! executing time: 0.009927000000004682 milliseconds
84! executing time: 0.008234199999975544 milliseconds
85! executing time: 0.00891070000000127 milliseconds
86! executing time: 0.008395799999988185 milliseconds
87! executing time: 0.009561800000000176 milliseconds
88! executing time: 0.009507700000000341 milliseconds
89! executing time: 0.008751200000006065 milliseconds
90! executing time: 0.008993899999978794 milliseconds
91! executing time: 0.008987399999995205 milliseconds
92! executing time: 0.011652599999990798 milliseconds
93! executing time: 0.01211399999999685 milliseconds
94! executing time: 0.010191499999990583 milliseconds
95! executing time: 0.009391899999997122 milliseconds
96! executing time: 0.009752800000001116 milliseconds
97! executing time: 0.011227800000000343 milliseconds
98! executing time: 0.010653800000000047 milliseconds
99! executing time: 0.011744800000002442 milliseconds2. Select the sorting method time-consuming
operation result:
2 numbers sorting time: 0.0012724999999988995 milliseconds
3 numbers sorting time: 0.0020489999999995234 milliseconds
4 numbers sorting time: 0.005885899999981348 milliseconds
5 numbers sorting time: 0.004977900000000091 milliseconds
6 numbers sorting time: 0.004677700000002005 milliseconds
7 numbers sorting time: 0.008602999999993699 milliseconds
8 numbers sorting time: 0.00920339999998987 milliseconds
9 numbers sorting time: 0.010189900000000307 milliseconds
10 numbers sorting time: 0.01227449999998953 milliseconds
11 numbers sorting time: 0.012929200000002083 milliseconds
12 numbers sorting time: 0.014420499999999947 milliseconds
13 numbers sorting time: 0.019797500000009904 milliseconds
14 numbers sorting time: 0.02116119999999455 milliseconds
15 numbers sorting time: 0.020406900000011774 milliseconds
16 numbers sorting time: 0.02709310000000187 milliseconds
17 numbers sorting time: 0.02739859999999794 milliseconds
18 numbers sorting time: 0.029796199999992723 milliseconds
19 numbers sorting time: 0.027377799999982244 milliseconds
20 numbers sorting time: 0.029248899999998912 milliseconds
21 numbers sorting time: 0.03271739999999568 milliseconds
22 numbers sorting time: 0.03371390000000929 milliseconds
23 numbers sorting time: 0.03946960000001809 milliseconds
24 numbers sorting time: 0.047130800000019235 milliseconds
25 numbers sorting time: 0.047065599999996266 milliseconds
26 numbers sorting time: 0.04654649999997673 milliseconds
27 numbers sorting time: 0.05025089999998045 milliseconds
28 numbers sorting time: 0.0619158000000084 milliseconds
29 numbers sorting time: 0.0701507999999933 milliseconds
30 numbers sorting time: 0.060636599999980945 milliseconds
31 numbers sorting time: 0.07053490000001261 milliseconds
32 numbers sorting time: 0.073296699999986 milliseconds
33 numbers sorting time: 0.0809247000000255 milliseconds
34 numbers sorting time: 0.07596179999998753 milliseconds
35 numbers sorting time: 0.07587219999999206 milliseconds
36 numbers sorting time: 0.07948309999997605 milliseconds
37 numbers sorting time: 0.08802670000000035 milliseconds
38 numbers sorting time: 0.100508700000006 milliseconds
39 numbers sorting time: 0.09315509999998994 milliseconds
40 numbers sorting time: 0.10121169999999324 milliseconds
41 numbers sorting time: 0.10298099999999977 milliseconds
42 numbers sorting time: 0.10794119999999907 milliseconds
43 numbers sorting time: 0.13089430000002267 milliseconds
44 numbers sorting time: 0.13083069999998997 milliseconds
45 numbers sorting time: 0.1270202999999981 milliseconds
46 numbers sorting time: 0.12131460000000516 milliseconds
47 numbers sorting time: 0.14594470000000115 milliseconds
48 numbers sorting time: 0.1449931999999876 milliseconds
49 numbers sorting time: 0.14965540000000033 milliseconds
50 numbers sorting time: 0.16672389999999382 milliseconds
51 numbers sorting time: 0.1567258000000038 milliseconds
52 numbers sorting time: 0.15108240000000706 milliseconds
53 numbers sorting time: 0.1738794999999982 milliseconds
54 numbers sorting time: 0.1928357000000176 milliseconds
55 numbers sorting time: 0.19325870000000123 milliseconds
56 numbers sorting time: 0.19082629999999767 milliseconds
57 numbers sorting time: 0.21581030000001533 milliseconds
58 numbers sorting time: 0.2127691000000027 milliseconds
59 numbers sorting time: 0.22047800000001416 milliseconds
60 numbers sorting time: 0.20358969999998067 milliseconds
61 numbers sorting time: 0.21165640000000963 milliseconds
62 numbers sorting time: 0.21881680000001325 milliseconds
63 numbers sorting time: 0.23560399999999504 milliseconds
64 numbers sorting time: 0.25244480000000635 milliseconds
65 numbers sorting time: 0.26406789999998637 milliseconds
66 numbers sorting time: 0.25990409999999997 milliseconds
67 numbers sorting time: 0.26312540000000695 milliseconds
68 numbers sorting time: 0.2712624000000119 milliseconds
69 numbers sorting time: 0.28340520000000424 milliseconds
70 numbers sorting time: 0.2923759999999902 milliseconds
71 numbers sorting time: 0.2992949000000067 milliseconds
72 numbers sorting time: 0.3073478000000023 milliseconds
73 numbers sorting time: 0.34134579999999914 milliseconds
74 numbers sorting time: 0.3125430000000051 milliseconds
75 numbers sorting time: 0.33875150000000076 milliseconds
76 numbers sorting time: 0.3322732999999971 milliseconds
77 numbers sorting time: 0.3412600999999995 milliseconds
78 numbers sorting time: 0.38342039999997723 milliseconds
79 numbers sorting time: 0.36002880000000914 milliseconds
80 numbers sorting time: 0.34170640000002095 milliseconds
81 numbers sorting time: 0.3924379999999985 milliseconds
82 numbers sorting time: 0.39715799999999035 milliseconds
83 numbers sorting time: 0.4302678999999898 milliseconds
84 numbers sorting time: 0.37184500000000753 milliseconds
85 numbers sorting time: 0.4156522000000109 milliseconds
86 numbers sorting time: 0.42353549999998563 milliseconds
87 numbers sorting time: 0.45001400000001013 milliseconds
88 numbers sorting time: 0.43643330000000446 milliseconds
89 numbers sorting time: 0.4744289000000208 milliseconds
90 numbers sorting time: 0.4462363000000096 milliseconds
91 numbers sorting time: 0.48084140000000275 milliseconds
92 numbers sorting time: 0.45832629999998176 milliseconds
93 numbers sorting time: 0.5081308000000035 milliseconds
94 numbers sorting time: 0.504677700000002 milliseconds
95 numbers sorting time: 0.4975833000000023 milliseconds
96 numbers sorting time: 0.5010714000000007 milliseconds
97 numbers sorting time: 0.5380179999999939 milliseconds
98 numbers sorting time: 0.5840522000000021 milliseconds
99 numbers sorting time: 0.5725185999999951 milliseconds3. Test List
operation result:
concat: 1.97066140000004 milliseconds
append: 0.10303559999999834 milliseconds
comprehension: 0.05253430000004755 milliseconds
list range: 0.018974300000081712 milliseconds
x.pop(0) time: 2.162285499999939 milliseconds
x.pop() time: 0.00032129999999597203 millisecondsCan see the pop element from the list head than pop elements from the end of the list takes much more ......
Time list of the various methods of complexity
