(window.webpackJsonp=window.webpackJsonp||[]).push([[2772],{3180:function(t,s,a){"use strict";a.r(s);var n=a(31),e=Object(n.a)({},(function(){var t=this,s=t.$createElement,a=t._self._c||s;return a("ContentSlotsDistributor",{attrs:{"slot-key":t.$parent.slotKey}},[a("h1",{attrs:{id:"profiling"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#profiling"}},[t._v("#")]),t._v(" Profiling")]),t._v(" "),a("h2",{attrs:{id:"timeit-and-timeit-in-ipython"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#timeit-and-timeit-in-ipython"}},[t._v("#")]),t._v(" %%timeit and %timeit in IPython")]),t._v(" "),a("p",[t._v("Profiling string concatanation:")]),t._v(" "),a("div",{staticClass:"language-py extra-class"},[a("pre",{pre:!0,attrs:{class:"language-py"}},[a("code",[t._v("In "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("1")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("import")]),t._v(" string\n\nIn "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("2")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("%")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("%")]),t._v("timeit s"),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),a("span",{pre:!0,attrs:{class:"token string"}},[t._v('""')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(";")]),t._v(" long_list"),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),a("span",{pre:!0,attrs:{class:"token builtin"}},[t._v("list")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("string"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("ascii_letters"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("50")]),t._v("\n  "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("for")]),t._v(" substring "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("in")]),t._v(" long_list"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v("\n  "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v("   s"),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("+=")]),t._v("substring\n  "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("1000")]),t._v(" loops"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" best of "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("3")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("570")]),t._v(" us per loop\n\nIn "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("3")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("%")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("%")]),t._v("timeit long_list"),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),a("span",{pre:!0,attrs:{class:"token builtin"}},[t._v("list")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("string"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("ascii_letters"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("*")]),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("50")]),t._v("\n  "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" s"),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),a("span",{pre:!0,attrs:{class:"token string"}},[t._v('""')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("join"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("long_list"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v("\n  "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("100000")]),t._v(" loops"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" best of "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("3")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("16.1")]),t._v(" us per loop\n\n")])])]),a("p",[t._v("Profiling loops over iterables and lists:")]),t._v(" "),a("div",{staticClass:"language-py extra-class"},[a("pre",{pre:!0,attrs:{class:"language-py"}},[a("code",[t._v("In "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("4")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("%")]),t._v("timeit "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("for")]),t._v(" i "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("in")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token builtin"}},[t._v("range")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("100000")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("pass")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("100")]),t._v(" loops"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" best of "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("3")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("2.82")]),t._v(" ms per loop\n\nIn "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("5")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("%")]),t._v("timeit "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("for")]),t._v(" i "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("in")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token builtin"}},[t._v("list")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token builtin"}},[t._v("range")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("100000")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("pass")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("100")]),t._v(" loops"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" best of "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("3")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("3.95")]),t._v(" ms per loop\n\n")])])]),a("h2",{attrs:{id:"timeit-function"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#timeit-function"}},[t._v("#")]),t._v(" timeit() function")]),t._v(" "),a("p",[t._v("Profiling repetition of elements in an array")]),t._v(" "),a("div",{staticClass:"language-py extra-class"},[a("pre",{pre:!0,attrs:{class:"language-py"}},[a("code",[a("span",{pre:!0,attrs:{class:"token operator"}},[t._v(">>")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v(">")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("import")]),t._v(" timeit\n"),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v(">>")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v(">")]),t._v(" timeit"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("timeit"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[t._v("'list(itertools.repeat(\"a\", 100))'")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token string"}},[t._v("'import itertools'")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" number "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("10000000")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("10.997665435877963")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v(">>")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v(">")]),t._v(" timeit"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("timeit"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[t._v("'[\"a\"]*100'")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" number "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("10000000")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("7.118789926862576")]),t._v("\n\n")])])]),a("h2",{attrs:{id:"timeit-command-line"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#timeit-command-line"}},[t._v("#")]),t._v(" timeit command line")]),t._v(" "),a("p",[t._v("Profiling concatanation of numbers")]),t._v(" "),a("div",{staticClass:"language-py extra-class"},[a("pre",{pre:!0,attrs:{class:"language-py"}},[a("code",[t._v("python "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("-")]),t._v("m timeit "),a("span",{pre:!0,attrs:{class:"token string"}},[t._v("\"'-'.join(str(n) for n in range(100))\"")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("10000")]),t._v(" loops"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" best of "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("3")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("29.2")]),t._v(" usec per loop\n\npython "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("-")]),t._v("m timeit "),a("span",{pre:!0,attrs:{class:"token string"}},[t._v("\"'-'.join(map(str,range(100)))\"")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("100000")]),t._v(" loops"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),t._v(" best of "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("3")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("19.4")]),t._v(" usec per loop\n\n")])])]),a("h2",{attrs:{id:"line-profiler-in-command-line"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#line-profiler-in-command-line"}},[t._v("#")]),t._v(" line_profiler in command line")]),t._v(" "),a("p",[t._v("The source code with @profile directive before the function we want to profile:")]),t._v(" "),a("div",{staticClass:"language-py extra-class"},[a("pre",{pre:!0,attrs:{class:"language-py"}},[a("code",[a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("import")]),t._v(" requests\n\n"),a("span",{pre:!0,attrs:{class:"token decorator annotation punctuation"}},[t._v("@profile")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("def")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("slow_func")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v("\n    s "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" requests"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("session"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v("\n    html"),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v("s"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("get"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[t._v('"https://en.wikipedia.org/"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("text\n    "),a("span",{pre:!0,attrs:{class:"token builtin"}},[t._v("sum")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token builtin"}},[t._v("pow")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token builtin"}},[t._v("ord")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("x"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("3.1")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("for")]),t._v(" x "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("in")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token builtin"}},[t._v("list")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("html"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v("\n        \n"),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("for")]),t._v(" i "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("in")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token builtin"}},[t._v("range")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("50")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v("\n    slow_func"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v("\n\n")])])]),a("p",[t._v("Using kernprof command to calculate profiling line by line")]),t._v(" "),a("div",{staticClass:"language-py extra-class"},[a("pre",{pre:!0,attrs:{class:"language-py"}},[a("code",[t._v("$ kernprof "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("-")]),t._v("lv so6"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("py\n\nWrote profile results to so6"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("py"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("lprof\nTimer unit"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("4.27654e-07")]),t._v(" s\n\nTotal time"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("22.6427")]),t._v(" s\nFile"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" so6"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("py\nFunction"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v(" slow_func at line "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("4")]),t._v("\n\nLine "),a("span",{pre:!0,attrs:{class:"token comment"}},[t._v("#      Hits         Time  Per Hit   % Time  Line Contents")]),t._v("\n"),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("==")]),t._v("\n     "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("4")]),t._v("                                           @profile\n     "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("5")]),t._v("                                           "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("def")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token function"}},[t._v("slow_func")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(":")]),t._v("\n     "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("6")]),t._v("        "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("50")]),t._v("        "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("20729")]),t._v("    "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("414.6")]),t._v("      "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("0.0")]),t._v("      s "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v(" requests"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("session"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v("\n     "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("7")]),t._v("        "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("50")]),t._v("     "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("47618627")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("952372.5")]),t._v("     "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("89.9")]),t._v("      html"),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("=")]),t._v("s"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("get"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token string"}},[t._v('"https://en.wikipedia.org/"')]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("text\n     "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("8")]),t._v("        "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("50")]),t._v("      "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("5306958")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("106139.2")]),t._v("     "),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("10.0")]),t._v("      "),a("span",{pre:!0,attrs:{class:"token builtin"}},[t._v("sum")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("[")]),a("span",{pre:!0,attrs:{class:"token builtin"}},[t._v("pow")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),a("span",{pre:!0,attrs:{class:"token builtin"}},[t._v("ord")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("x"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(",")]),a("span",{pre:!0,attrs:{class:"token number"}},[t._v("3.1")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("for")]),t._v(" x "),a("span",{pre:!0,attrs:{class:"token keyword"}},[t._v("in")]),t._v(" "),a("span",{pre:!0,attrs:{class:"token builtin"}},[t._v("list")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("(")]),t._v("html"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v("]")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(")")]),t._v("\n\n")])])]),a("p",[t._v("Page request is almost always slower than any calculation based on the information on the page.")]),t._v(" "),a("h2",{attrs:{id:"using-cprofile-preferred-profiler"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#using-cprofile-preferred-profiler"}},[t._v("#")]),t._v(" Using cProfile (Preferred Profiler)")]),t._v(" "),a("p",[t._v("Python includes a profiler called cProfile. This is generally preferred over using timeit.")]),t._v(" "),a("p",[t._v("It breaks down your entire script and for each method in your script it tells you:")]),t._v(" "),a("ul",[a("li",[a("code",[t._v("ncalls")]),t._v(": The number of times a method was called")]),t._v(" "),a("li",[a("code",[t._v("tottime")]),t._v(": Total time spent in the given function (excluding time made in calls to sub-functions)")]),t._v(" "),a("li",[a("code",[t._v("percall")]),t._v(": Time spent per call. Or the quotient of tottime divided by ncalls")]),t._v(" "),a("li",[a("code",[t._v("cumtime")]),t._v(": The cumulative time spent in this and all subfunctions (from invocation till exit). This figure is accurate even for recursive functions.")]),t._v(" "),a("li",[a("code",[t._v("percall")]),t._v(": is the quotient of cumtime divided by primitive calls")]),t._v(" "),a("li",[a("code",[t._v("filename:lineno(function)")]),t._v(": provides the respective data of each function")])]),t._v(" "),a("p",[t._v("The cProfiler can be easily called on Command Line using:")]),t._v(" "),a("div",{staticClass:"language-py extra-class"},[a("pre",{pre:!0,attrs:{class:"language-py"}},[a("code",[t._v("$ python "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("-")]),t._v("m cProfile main"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("py \n\n")])])]),a("p",[t._v("To sort the returned list of profiled methods by the time taken in the method:")]),t._v(" "),a("div",{staticClass:"language-py extra-class"},[a("pre",{pre:!0,attrs:{class:"language-py"}},[a("code",[t._v("$ python "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("-")]),t._v("m cProfile "),a("span",{pre:!0,attrs:{class:"token operator"}},[t._v("-")]),t._v("s time main"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[t._v(".")]),t._v("py \n\n")])])])])}),[],!1,null,null,null);s.default=e.exports}}]);