{"id":1196,"date":"2016-09-05T09:37:45","date_gmt":"2016-09-05T01:37:45","guid":{"rendered":"http:\/\/cn.hostease.com\/xueyuan\/?p=1196"},"modified":"2016-09-05T09:37:45","modified_gmt":"2016-09-05T01:37:45","slug":"%e5%88%a9%e7%94%a8python%e8%8e%b7%e5%8f%96%e6%93%8d%e4%bd%9c%e7%b3%bb%e7%bb%9f%e4%bf%a1%e6%81%af%e5%ae%9e%e4%be%8b","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/xueyuan\/jishu\/fuwuqi\/%e5%88%a9%e7%94%a8python%e8%8e%b7%e5%8f%96%e6%93%8d%e4%bd%9c%e7%b3%bb%e7%bb%9f%e4%bf%a1%e6%81%af%e5%ae%9e%e4%be%8b\/","title":{"rendered":"\u5229\u7528Python\u83b7\u53d6\u64cd\u4f5c\u7cfb\u7edf\u4fe1\u606f\u5b9e\u4f8b"},"content":{"rendered":"

\u6bcf\u4e00\u4f4d\u8fd0\u7ef4\u4eba\u5458\u90fd\u5e94\u8be5\u5bf9\u81ea\u5df1\u6240\u7ba1\u7406\u7684\u673a\u5668\u914d\u7f6e\u5f88\u6e05\u695a\uff0c\u56e0\u4e3a\u8fd9\u5bf9\u6211\u4eec\u5feb\u901f\u5904\u7406\u95ee\u9898\u5f88\u6709\u5e2e\u52a9\uff0c\u6bd4\u5982\u968f\u7740\u4e1a\u52a1\u589e\u957f\uff0c\u7a81\u7136\u67d0\u4e9b\u673a\u5668\u8d1f\u8f7d\u4e0a\u6da8\u7684\u5389\u5bb3\uff0c\u8fd9\u65f6\u5019\u8981 \u6392\u67e5\u539f\u56e0\uff0c\u9664\u4e86\u4ece\u5e94\u7528\u7a0b\u5e8f\u3001\u67b6\u6784\u4e0a\u5206\u6790\u5916\uff0c\u5f53\u524d\u786c\u4ef6\u6027\u80fd\u7684\u5206\u6790\u5e94\u8be5\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u4e00\u73af\uff0c\u4eca\u5929\u6211\u4eec\u5c06\u4e0d\u7528\u7b2c\u4e09\u65b9\u6a21\u5757\uff0c\u7528python\u81ea\u5e26\u6a21\u5757\u548c\u7cfb\u7edf\u63d0\u4f9b\u7684\u8fd0\u884c \u4fe1\u606f\u6765\u83b7\u53d6\u6211\u4eec\u9700\u8981\u7684\u4fe1\u606f\uff0c\u8fd9\u4e2a\u811a\u672c\u9664\u4e86\u786c\u4ef6\u5916\uff0c\u8fd8\u6293\u53d6\u4e86\u5f53\u524d\u7cfb\u7edf\u8fdb\u7a0b\u6570\u548c\u7f51\u5361\u6d41\u91cf\u529f\u80fd\uff0c\u6240\u4ee5\u8fd9\u4e2a\u7248\u672c\u5b9e\u73b0\u7684\u529f\u80fd\u57fa\u672c\u5bf9\u5e94\u4e86\u4e4b\u524dpsutil<\/code>\u5b9e\u73b0\u7684\u5185\u5bb9\uff0c\u591a\u7684\u4e0d\u8bf4\u4e86\uff0c\u76f4\u63a5\u8d34\u4ee3\u7801\uff1a<\/p>\n

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#!\/usr\/bin\/env python<\/code><\/div>\n
\u00a0<\/code><\/div>\n
from<\/code> collections <\/code>import<\/code> OrderedDict<\/code><\/div>\n
from<\/code> collections <\/code>import<\/code> namedtuple<\/code><\/div>\n
import<\/code> os<\/code><\/div>\n
import<\/code> glob<\/code><\/div>\n
import<\/code> re<\/code><\/div>\n
\u00a0<\/code><\/div>\n
def<\/code> cpuinfo():<\/code><\/div>\n
\u00a0<\/code><\/div>\n
\u00a0<\/code>cpuinfo<\/code>=<\/code>OrderedDict()<\/code><\/div>\n
\u00a0<\/code>procinfo<\/code>=<\/code>OrderedDict()<\/code><\/div>\n
\u00a0<\/code><\/div>\n
\u00a0<\/code>nprocs <\/code>=<\/code> 0<\/code><\/div>\n
\u00a0<\/code>with <\/code>open<\/code>(<\/code>'\/proc\/cpuinfo'<\/code>) as f:<\/code><\/div>\n
\u00a0<\/code>for<\/code> line <\/code>in<\/code> f:<\/code><\/div>\n
\u00a0\u00a0<\/code>if<\/code> not<\/code> line.strip():<\/code><\/div>\n
\u00a0\u00a0<\/code><\/div>\n
\u00a0\u00a0<\/code>cpuinfo[<\/code>'proc%s'<\/code> %<\/code> nprocs] <\/code>=<\/code> procinfo<\/code><\/div>\n
\u00a0\u00a0<\/code>nprocs<\/code>=<\/code>nprocs<\/code>+<\/code>1<\/code><\/div>\n
\u00a0\u00a0<\/code><\/div>\n
\u00a0\u00a0<\/code>procinfo<\/code>=<\/code>OrderedDict()<\/code><\/div>\n
\u00a0\u00a0<\/code>else<\/code>:<\/code><\/div>\n
\u00a0\u00a0<\/code>if<\/code> len<\/code>(line.split(<\/code>':'<\/code>)) <\/code>=<\/code>=<\/code> 2<\/code>:<\/code><\/div>\n
\u00a0\u00a0\u00a0<\/code>procinfo[line.split(<\/code>':'<\/code>)[<\/code>0<\/code>].strip()] <\/code>=<\/code> line.split(<\/code>':'<\/code>)[<\/code>1<\/code>].strip()<\/code><\/div>\n
\u00a0\u00a0<\/code>else<\/code>:<\/code><\/div>\n
\u00a0\u00a0\u00a0<\/code>procinfo[line.split(<\/code>':'<\/code>)[<\/code>0<\/code>].strip()] <\/code>=<\/code> ''<\/code><\/div>\n
\u00a0\u00a0<\/code><\/div>\n
\u00a0<\/code>return<\/code> cpuinfo<\/code><\/div>\n
\u00a0<\/code><\/div>\n
def<\/code> meminfo():<\/code><\/div>\n
\u00a0<\/code><\/div>\n
\u00a0<\/code>meminfo<\/code>=<\/code>OrderedDict()<\/code><\/div>\n
\u00a0<\/code><\/div>\n
\u00a0<\/code>with <\/code>open<\/code>(<\/code>'\/proc\/meminfo'<\/code>) as f:<\/code><\/div>\n
\u00a0<\/code>for<\/code> line <\/code>in<\/code> f:<\/code><\/div>\n
\u00a0\u00a0<\/code>meminfo[line.split(<\/code>':'<\/code>)[<\/code>0<\/code>]] <\/code>=<\/code> line.split(<\/code>':'<\/code>)[<\/code>1<\/code>].strip()<\/code><\/div>\n
\u00a0<\/code>return<\/code> meminfo<\/code><\/div>\n
\u00a0<\/code><\/div>\n
\u00a0<\/code><\/div>\n
def<\/code> netdevs():<\/code><\/div>\n
\u00a0<\/code><\/div>\n
\u00a0<\/code>with <\/code>open<\/code>(<\/code>'\/proc\/net\/dev'<\/code>) as f:<\/code><\/div>\n
\u00a0<\/code>net_dump <\/code>=<\/code> f.readlines()<\/code><\/div>\n
\u00a0<\/code><\/div>\n
\u00a0<\/code>device_data<\/code>=<\/code>{}<\/code><\/div>\n
\u00a0<\/code>data <\/code>=<\/code> namedtuple(<\/code>'data'<\/code>,[<\/code>'rx'<\/code>,<\/code>'tx'<\/code>])<\/code><\/div>\n
\u00a0<\/code>for<\/code> line <\/code>in<\/code> net_dump[<\/code>2<\/code>:]:<\/code><\/div>\n
\u00a0<\/code>line <\/code>=<\/code> line.split(<\/code>':'<\/code>)<\/code><\/div>\n
\u00a0<\/code>if<\/code> line[<\/code>0<\/code>].strip() !<\/code>=<\/code> 'lo'<\/code>:<\/code><\/div>\n
\u00a0\u00a0<\/code>device_data[line[<\/code>0<\/code>].strip()] <\/code>=<\/code> data(<\/code>float<\/code>(line[<\/code>1<\/code>].split()[<\/code>0<\/code>])<\/code>\/<\/code>(<\/code>1024.0<\/code>*<\/code>1024.0<\/code>), <\/code><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code>float<\/code>(line[<\/code>1<\/code>].split()[<\/code>8<\/code>])<\/code>\/<\/code>(<\/code>1024.0<\/code>*<\/code>1024.0<\/code>))<\/code><\/div>\n
\u00a0<\/code><\/div>\n
\u00a0<\/code>return<\/code> device_data<\/code><\/div>\n
\u00a0<\/code><\/div>\n
def<\/code> process_list():<\/code><\/div>\n
\u00a0<\/code><\/div>\n
\u00a0<\/code>pids <\/code>=<\/code> []<\/code><\/div>\n
\u00a0<\/code>for<\/code> subdir <\/code>in<\/code> os.listdir(<\/code>'\/proc'<\/code>):<\/code><\/div>\n
\u00a0<\/code>if<\/code> subdir.isdigit():<\/code><\/div>\n
\u00a0\u00a0<\/code>pids.append(subdir)<\/code><\/div>\n
\u00a0<\/code><\/div>\n
\u00a0<\/code>return<\/code> pids<\/code><\/div>\n
\u00a0<\/code><\/div>\n
\u00a0<\/code><\/div>\n
dev_pattern <\/code>=<\/code> [<\/code>'sd.*'<\/code>,<\/code>'xv*'<\/code>]<\/code><\/div>\n
\u00a0<\/code><\/div>\n
def<\/code> size(device):<\/code><\/div>\n
\u00a0<\/code>nr_sectors <\/code>=<\/code> open<\/code>(device<\/code>+<\/code>'\/size'<\/code>).read().rstrip(<\/code>'\\n'<\/code>)<\/code><\/div>\n
\u00a0<\/code>sect_size <\/code>=<\/code> open<\/code>(device<\/code>+<\/code>'\/queue\/hw_sector_size'<\/code>).read().rstrip(<\/code>'\\n'<\/code>)<\/code><\/div>\n
\u00a0<\/code><\/div>\n
\u00a0<\/code>return<\/code> (<\/code>float<\/code>(nr_sectors)<\/code>*<\/code>float<\/code>(sect_size))<\/code>\/<\/code>(<\/code>1024.0<\/code>*<\/code>1024.0<\/code>*<\/code>1024.0<\/code>)<\/code><\/div>\n
\u00a0<\/code><\/div>\n
def<\/code> detect_devs():<\/code><\/div>\n
\u00a0<\/code>for<\/code> device <\/code>in<\/code> glob.glob(<\/code>'\/sys\/block\/*'<\/code>):<\/code><\/div>\n
\u00a0<\/code>for<\/code> pattern <\/code>in<\/code> dev_pattern:<\/code><\/div>\n
\u00a0\u00a0<\/code>if<\/code> re.<\/code>compile<\/code>(pattern).match(os.path.basename(device)):<\/code><\/div>\n
\u00a0\u00a0<\/code>print<\/code>(<\/code>'Device:: {0}, Size:: {1} GiB'<\/code>.<\/code>format<\/code>(device, size(device)))<\/code><\/div>\n
\u00a0<\/code><\/div>\n
\u00a0<\/code><\/div>\n
if<\/code> __name__<\/code>=<\/code>=<\/code>'__main__'<\/code>:<\/code><\/div>\n
\u00a0<\/code>cpuinfo <\/code>=<\/code> cpuinfo()<\/code><\/div>\n
\u00a0<\/code>for<\/code> processor <\/code>in<\/code> cpuinfo.keys():<\/code><\/div>\n
\u00a0<\/code>print<\/code>(cpuinfo[processor][<\/code>'model name'<\/code>])<\/code><\/div>\n
\u00a0<\/code><\/div>\n
\u00a0<\/code>meminfo <\/code>=<\/code> meminfo()<\/code><\/div>\n
\u00a0<\/code>print<\/code>(<\/code>'Total memory: {0}'<\/code>.<\/code>format<\/code>(meminfo[<\/code>'MemTotal'<\/code>]))<\/code><\/div>\n
\u00a0<\/code>print<\/code>(<\/code>'Free memory: {0}'<\/code>.<\/code>format<\/code>(meminfo[<\/code>'MemFree'<\/code>]))<\/code><\/div>\n
\u00a0<\/code><\/div>\n
\u00a0<\/code>netdevs <\/code>=<\/code> netdevs()<\/code><\/div>\n
\u00a0<\/code>for<\/code> dev <\/code>in<\/code> netdevs.keys():<\/code><\/div>\n
\u00a0<\/code>print<\/code>(<\/code>'{0}: {1} MiB {2} MiB'<\/code>.<\/code>format<\/code>(dev, netdevs[dev].rx, netdevs[dev].tx))<\/code><\/div>\n
\u00a0<\/code><\/div>\n
\u00a0<\/code><\/div>\n
\u00a0<\/code>pids <\/code>=<\/code> process_list()<\/code><\/div>\n
\u00a0<\/code>print<\/code>(<\/code>'Total number of running processes:: {0}'<\/code>.<\/code>format<\/code>(<\/code>len<\/code>(pids)))<\/code><\/div>\n
\u00a0<\/code><\/div>\n
\u00a0<\/code><\/div>\n
\u00a0<\/code>detect_devs()<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n

\u4ee5\u4e0b\u662f\u811a\u672c\u7684\u89e3\u91ca\u90e8\u5206\uff1a<\/strong><\/p>\n

1\u3001OrderedDict<\/strong>\uff0c\u8fd9\u4e2a\u529f\u80fd\u662f\u53ef\u4ee5\u751f\u6210\u6709\u5e8f\u5b57\u5178\uff0c\u5927\u5bb6\u90fd\u77e5\u9053\u5728python\u4e2d\u5b57\u5178\u662f\u65e0\u5e8f\u7684\uff0c\u5f53\u7136\u4f60\u4e5f\u53ef\u4ee5\u6839\u636ekye<\/code>\u6765\u6392\u5e8f\uff0c\u4f46\u7528OrderedDict<\/code>\u5c31\u53ef\u4ee5\u76f4\u63a5\u751f\u6210\u6709\u5e8f\u5b57\u5178\uff0c\u6709\u5e8f\u5b57\u5178\u7684\u987a\u5e8f\u53ea\u8ddf\u4f60\u6dfb\u52a0\u7684\u987a\u5e8f\u6709\u5173\u3002<\/p>\n

2\u3001namedtuple<\/strong>\uff0c\u529f\u80fd\u662f\u53ef\u4ee5\u7ed9\u5143\u7ec4\u7684\u7d22\u5f15\u8d77\u4e2a\u540d\u5b57\uff0c\u4e00\u822c\u6211\u4eec\u8bbf\u95ee\u5143\u7ec4\uff0c\u53ea\u80fd\u7528\u7d22\u5f15\u53bb\u8bbf\u95ee\uff0c\u4f46\u5982\u679c\u7ed9\u7d22\u5f15\u5b9a\u4e49\u4e86\u540d\u5b57\uff0c\u4f60\u5c31\u53ef\u4ee5\u7528\u5b9a\u4e49\u7684\u8fd9\u4e2a\u540d\u5b57\u53bb\u8bbf\u95ee\u4e86\uff0c\u4e3a\u65b9\u4fbf\u5927\u5bb6\u7406\u89e3\uff0c\u6211\u4eec\u4e3e\u4e2a\u6817\u5b50\uff1a<\/p>\n

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>>> <\/code>from<\/code> collections <\/code>import<\/code> namedtuple<\/code><\/div>\n
>>> data <\/code>=<\/code> namedtuple(<\/code>'data'<\/code>,[<\/code>'rx'<\/code>,<\/code>'tx'<\/code>])<\/code><\/div>\n
>>> d <\/code>=<\/code> data(<\/code>123<\/code>,<\/code>456<\/code>)<\/code><\/div>\n
>>> <\/code>print<\/code> d<\/code><\/div>\n
data(rx<\/code>=<\/code>123<\/code>, tx<\/code>=<\/code>456<\/code>)<\/code><\/div>\n
>>> <\/code>print<\/code> d.rx<\/code><\/div>\n
123<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n

3\u3001glob<\/strong>\uff0c\u5728\u8fd9\u884cfor device in glob.glob(\u2018\/sys\/block\/*')<\/code>\u7528\u5230\u4e86\u8fd9\u4e2a\u529f\u80fd\uff0c\u5b83\u4e3b\u8981\u65b9\u6cd5\u5c31\u662fglob<\/code>\uff0c\u5b83\u8fd4\u56de\u6240\u6709\u5339\u914d\u7684\u6587\u4ef6\u5217\u8868\u3002<\/p>\n

4\u3001re.compile(pattern).match(os.path.basename(device))\uff0c<\/strong>\u8fd9\u53e5\u662f\u5c06\u6b63\u5219\u8868\u8fbe\u5f0f\u7f16\u8bd1\u4e3aPattern<\/code>\u5bf9\u8c61\uff0c\u7136\u540e\u4f7f\u7528Pattern<\/code>\u5339\u914d\u6587\u672c\uff0c\u83b7\u5f97\u5339\u914d\u7ed3\u679c\uff0c\u5339\u914d\u6210\u529f\u8fd4\u56de\u771f\uff0c\u65e0\u6cd5\u5339\u914d\u65f6\u5c06\u8fd4\u56deNone\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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