\u7528Python\u6267\u884c\u7cfb\u7edf\u547d\u4ee4\u65f6\uff0c\u2019\\r\\n\u2019\u53ef\u80fd\u4f1a\u5f15\u8d77\u7684\u95ee\u9898\uff1a<\/h6>\n
http:\/\/stackoverflow.com\/questions\/26555814\/using-os-system-in-python-to-execute-linux-command<\/a><\/p>\n http:\/\/stackoverflow.com\/questions\/905221\/os-system-execute-command-under-which-linux-shell<\/a><\/p>\n os.system() just calls the system() system call (“man 3 system”). On most *nixes this means you get \/bin\/sh.<\/p><\/blockquote>\n subprocess.Popen()\u7684executable\u53c2\u6570\u00a0 #\u53ef\u4ee5\u6307\u5b9a\u4f7f\u7528Bash\u800c\u4e0d\u662f\u9ed8\u8ba4\u7684\/bin\/sh<\/p>\n http:\/\/stackoverflow.com\/questions\/3791465\/python-os-system-for-command-line-call-linux-not-returning-what-it-should<\/a><\/p>\n \u5982\u679c\u60f3\u8981\u83b7\u53d6\u7cfb\u7edf\u547d\u4ee4\u6267\u884c\u540e\u7684\u8fd4\u56de\u5185\u5bb9\uff0c\u5e94\u8be5\u4f7f\u7528subprocess.Popen() \u6216\u8005 os.popen() \u800c\u4e0d\u662fos.system()<\/span>\uff0c\u539f\u56e0\u5982\u4e0b\uff1a<\/p>\n http:\/\/stackoverflow.com\/questions\/1007855\/popen-and-python<\/a><\/p>\n http:\/\/www.cyberciti.biz\/faq\/python-execute-unix-linux-command-examples\/<\/a><\/p>\n <\/p>\n \u9996\u5148\uff0c\u786e\u5b9a\u641c\u7d22\u5173\u952e\u5b57\uff1a<\/p>\n http:\/\/search.aol.com\/aol\/search?q=use+python+to+get+interface+name+%27%2Fproc%2Fnet%2Fdev%27<\/a><\/p>\n \u603b\u7ed3\uff1a\u53ef\u4ee5\u901a\u8fc7Python\u8c03\u7528\u7cfb\u7edf\u547d\u4ee4\uff08ip\/ipconfig\/netstat\uff09 \u6216 \u89e3\u6790\u7cfb\u7edf\u6587\u4ef6\uff08\/proc\/net\/dev\uff09\u6765\u5f97\u5230\u3002<\/p>\n <\/p>\n \u662f tuple() \u5feb\uff0c\u8fd8\u662f set() \u5feb\uff1f<\/p>\n http:\/\/search.aol.com\/aol\/search?q=python+set+in+efficiency<\/a><\/p>\n \u6700\u540e\u53ef\u77e5\uff0c\u5224\u65ad\u67d0\u4e00\u5143\u7d20\u662f\u5426\u5728\u67d0\u4e00\u96c6\u5408\u4e2d\u65f6\uff0c\u6700\u4f73\u7684\u65b9\u6848\u662f set \uff0clist\u548ctuple\u7684\u590d\u6742\u5ea6\u4e3aO(n)\uff0c\u800c set \u53ea\u6709O(1)\uff1a<\/p>\n https:\/\/www.ics.uci.edu\/~pattis\/ICS-33\/lectures\/complexitypython.txt<\/a><\/p>\n <\/p>\n http:\/\/search.aol.com\/aol\/search?q=python+any+true<\/a><\/p>\n <\/p>\n <\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" 1.\u7528Python\u6267\u884c\u7cfb\u7edf\u547d\u4ee4 \u9996\u5148\uff0c\u786e\u5b9a\u641c\u7d22\u5173\u952e\u5b57\uff1a http:\/\/search.aol.com\/aol\/s […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23,7],"tags":[431,432,433,8,19],"class_list":["post-1787","post","type-post","status-publish","format-standard","hentry","category-knowledgebase-2","category-programing","tag-all","tag-any","tag-in","tag-python","tag-tips"],"views":3496,"_links":{"self":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts\/1787","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/comments?post=1787"}],"version-history":[{"count":0,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts\/1787\/revisions"}],"wp:attachment":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/media?parent=1787"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/categories?post=1787"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/tags?post=1787"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\u5982\u4f55\u77e5\u9053os.system()\u51fd\u6570\u662f\u4f7f\u7528\u54ea\u4e2ashell\u6267\u884c\u7684\u547d\u4ee4\uff1f<\/h6>\n
\u5728Python\u4e2d\u5982\u4f55\u83b7\u53d6\u8c03\u7528\u7cfb\u7edf\u547d\u4ee4\u6267\u884c\u7684\u8fd4\u56de\u5185\u5bb9\uff1f<\/h6>\n
![\"python_exec_command\"](\"http:\/\/ixyzero.com\/blog\/wp-content\/uploads\/2015\/01\/python_exec_command-300x122.png\")
<\/a><\/p>\n\u5b9e\u4f8b\uff1a<\/h6>\n
2.\u5982\u4f55\u83b7\u53d6Linux\u7cfb\u7edf\u7684\u7f51\u5361\u63a5\u53e3\u5217\u8868<\/h5>\n
\n
# grep -A1 'lo:' \/proc\/net\/dev | grep -v 'lo:' | awk -F':' '{print $1}'\n eth0\n\n# grep -A1 'lo:' \/proc\/net\/dev | grep -v 'lo:' | awk -F':' '{print $1}' | sed 's\/[[:space:]]\/\/g'\neth0\n\n\nIn [5]: print os.popen(\"grep -A1 'lo:' \/proc\/net\/dev | grep -v 'lo:' | awk -F':' '{print $1}' | sed 's\/[[:space:]]\/\/g'\").read()\neth0\nIn [6]: print os.popen(\"grep -A1 'lo:' \/proc\/net\/dev | grep -v 'lo:' | awk -F':' '{print $1}'\").read().strip()\neth0<\/pre>\n3.\u5728Python\u4e2d\u5224\u65ad\u67d0\u4e2a\u5b57\u7b26\u4e32\/\u6570\u5b57\u662f\u5426\u5728\u67d0\u4e00\u96c6\u5408\u4e2d\u7684\u901f\u5ea6\u5feb\u6162\u5bf9\u6bd4<\/h5>\n
\n\n
\n
![\"python_complexity_info\"](\"http:\/\/ixyzero.com\/blog\/wp-content\/uploads\/2015\/01\/python_complexity_info-200x300.png\")
<\/a><\/p>\n4.Python\u7684\u5185\u7f6e\u51fd\u6570\uff1aany()\u548call()\u7684\u6280\u5de7<\/h5>\n
\n
5.Python\u4e2d\u7684list\u548ctuple\u7684\u76f8\u4e92\u8f6c\u6362<\/h5>\n
It should work fine, don't use tuple, list or other special names as a variable name. It's probably whats causing your problem.\n\n>>> l = [4,5,6]\n>>> tuple(l)\n(4, 5, 6)<\/pre>\n
\n
6.\u7528Python\u89e3\u538bgzip\u5b57\u7b26\u4e32<\/h5>\n
#!\/usr\/bin\/env python\n# coding=utf-8\nimport sys, zlib, binascii\n\ntry:\n with open(sys.argv[1], 'rb') as fp: original_str = fp.read()\nexcept IOError as e:\n print e\nif len(original_str) > 2 and '1F8B' == binascii.hexlify(original_str[:2]).upper():\n try:\n data = zlib.decompress(original_str, 16+zlib.MAX_WBITS)\n except:\n print 'decompress error...'\n sys.exit(1)\n if len(sys.argv) == 3:\n with open(sys.argv[2], 'wb') as fp: fp.write(data)\n else:\n print 'Length:', len(data)\n print data<\/pre>\n