安装python性能检测工具line_profiler
line_profiler是一款監(jiān)測(cè)python的CPU密集型性能問(wèn)題的強(qiáng)大工具,可以對(duì)函數(shù)進(jìn)行逐行分析,在linux上安裝時(shí)一切正常,然而今天在win10 64位系統(tǒng)安裝失敗了
pip3 install line_profiler
報(bào)錯(cuò):
error: Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual C++ Build Tools": http://landinghub.visualstudio.com/visual-cpp-build-tools提示我需要安裝?Microsoft Visual C++ 14.0
解決辦法:
wheel是一個(gè)已經(jīng)編譯好的包,在安裝時(shí)不需要編譯過(guò)程,安裝whl文件時(shí)要比發(fā)布的源文件安裝要快,目前大部分python包都有wheel包,推薦使用wheel方式安裝
從https://www.lfd.uci.edu/~gohlke/pythonlibs/網(wǎng)站找到line_profiler,找到對(duì)應(yīng)的python版本,實(shí)測(cè)python3.6.4下win_32版本安裝不成功,使用win_amd64能成功安裝
簡(jiǎn)單測(cè)試:
kernprof -l -v tr1y.py
正常輸出如下:
(1.800000000000033, -1.800000000000033) length of x: 1000 total elements: 1000000 Wrote profile results to tr1y.py.lprof Timer unit: 5.68888e-07 sTotal time: 2.84954 s File: tr1y.py Function: calculate_z_serial_purepython at line 48Line # Hits Time Per Hit % Time Line Contents ==============================================================48 @profile49 def calculate_z_serial_purepython(max_iter, zs, cs):50 1 7062.0 7062.0 0.1 output = [0] * len(zs)51 1000001 564275.0 0.6 11.3 for i in range(len(zs)):52 1000000 553309.0 0.6 11.0 n = 053 1000000 632514.0 0.6 12.6 z = zs[i]54 1000000 593978.0 0.6 11.9 c = cs[i]55 1485000 1365751.0 0.9 27.3 while abs(z) < 2 and n < max_iter:56 485000 344250.0 0.7 6.9 z = z * z + c57 485000 310470.0 0.6 6.2 n += 158 1000000 637342.0 0.6 12.7 output[i] = n59 1 3.0 3.0 0.0 return output?
轉(zhuǎn)載于:https://www.cnblogs.com/tarantino/p/10802072.html
總結(jié)
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