{"id":28106,"date":"2023-12-27T17:44:50","date_gmt":"2023-07-09T22:07:24","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e9%80%9a%e8%bf%87python%e7%9a%84subprocess%e6%a8%a1%e5%9d%97%e8%bf%9b%e8%a1%8c%e5%90%8e%e5%8f%b0%e6%89%a7%e8%a1%8c\/"},"modified":"2025-08-12T06:22:23","modified_gmt":"2025-08-11T22:22:23","slug":"%e9%80%9a%e8%bf%87python%e7%9a%84subprocess%e6%a8%a1%e5%9d%97%e8%bf%9b%e8%a1%8c%e5%90%8e%e5%8f%b0%e6%89%a7%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e9%80%9a%e8%bf%87python%e7%9a%84subprocess%e6%a8%a1%e5%9d%97%e8%bf%9b%e8%a1%8c%e5%90%8e%e5%8f%b0%e6%89%a7%e8%a1%8c\/","title":{"rendered":"\u901a\u8fc7Python\u7684subprocess\u6a21\u5757\u8fdb\u884c\u540e\u53f0\u6267\u884c"},"content":{"rendered":"

\u524d\u63d0 t\u00ed)\u8fd9\u7bc7\u6587\u7ae0\u662f\u4e00\u7bc7\u65e8\u5728\u901a\u8fc7 discord.py \u7684 discord bot \u6765\u63a7\u5236 Minecraft \u670d\u52a1\u5668\u7684 Advent Calendar \u6587\u7ae0\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u5c06\u4f7f\u7528 Python \u7a0b\u5e8f\u4e2d\u7684\u547d\u4ee4\u6765\u64cd\u4f5c Minecraft \u670d\u52a1\u5668\u3002\u4e3a\u6b64\uff0c\u6211\u4eec\u5c06\u4ecb\u7ecd subprocess \u7684 Popen \u65b9\u6cd5\u3002<\/p>\n

\u5b50\u8fdb\u7a0b (z\u01d0subprocess \u662f\u4e3a\u4e86\u4ece\u7a0b\u5e8f\u4e2d\u6267\u884c\u547d\u4ee4\uff08\u5305\u62ec\u5176\u4ed6\u7a0b\u5e8f\uff09\u800c\u8bbe\u8ba1\u7684\u5de5\u5177\u3002\u60a8\u53ef\u4ee5\u53c2\u8003\u4ee5\u4e0b\u6587\u7ae0\u4ee5\u83b7\u5f97\u6574\u4f53\u7684\u4f7f\u7528\u65b9\u6cd5\u3002<\/p>\n

subprocess\u306e\u4f7f\u3044\u65b9(Python3.6)<\/p>\n

\u79c1\u306e\u74b0\u5883\u3067\u306fPython 3.10.6\u3067\u3059\u304c\uff0c\u540c\u3058\u3088\u3046\u306b\u4f7f\u3048\u307e\u3059<\/p>\n

subprocess\u306b\u3064\u3044\u3066\u3088\u308a\u6df1\u304f\uff083\u7cfb\uff0c\u66f4\u65b0\u7248\uff09<\/p>\n

\u4e3a\u4e86\u540c\u65f6\u542f\u52a8Discord\u673a\u5668\u4eba\u548cMinecraft\u670d\u52a1\u5668\uff0c\u6211\u4eec\u5c06\u4f7f\u7528Popen\u3002<\/p>\n

\u5b50\u8fdb\u7a0b.PopenPopen\u542f\u52a8\u7684\u8fdb\u7a0b\u4f1a\u5e76\u884c\u6267\u884c\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u4e0d\u8bbaPopen\u542f\u52a8\u7684\u8fdb\u7a0b\u662f\u5426\u5df2\u7ed3\u675f\uff0c\u4e4b\u540e\u5199\u5728Popen\u540e\u9762\u7684\u4ee3\u7801\u90fd\u4f1a\u6267\u884c\u3002\u8ba9\u6211\u4eec\u901a\u8fc7\u5177\u4f53\u7684\u7a0b\u5e8f\u6765\u8fdb\u884c\u5b9e\u9a8c\u5427\u3002<\/p>\n

\u540c\u6b65\u9a8c\u8bc1\u5b9e\u9a8c\u9996\u5148\uff0c\u6211\u51c6\u5907\u4e86\u4ee5\u4e0b\u8fd9\u6837\u7684shell\u811a\u672c\u3002<\/p>\n
#!\/bin\/bash<\/span>\r\n\r\necho<\/span> \"start sleep\"<\/span>\r\nsleep <\/span>5\r\necho<\/span> \"wake up\"<\/span>\r\n<\/code><\/pre>\n
\u6211\u5011\u5c07\u6bd4\u8f03\u4f7f\u7528Popen\u9032\u884c\u57f7\u884c\u548c\u4f7f\u7528run\u9032\u884c\u57f7\u884c\u9019\u5169\u7a2e\u65b9\u5f0f\u3002<\/p>\n
import<\/span> subprocess<\/span>\r\n\r\nscript<\/span> =<\/span> \"<\/span>.\/sleep_script.sh<\/span>\"<\/span>\r\n\r\nwith<\/span> open<\/span>(<\/span>\"<\/span>log.txt<\/span>\"<\/span>,<\/span> \"<\/span>wb<\/span>\"<\/span>)<\/span> as<\/span> f<\/span>:<\/span>\r\n    f<\/span>.<\/span>write<\/span>(<\/span>b<\/span>\"<\/span>(hello)<\/span>\\n\\n<\/span>\"<\/span>)<\/span>\r\n\r\nwith<\/span> open<\/span>(<\/span>\"<\/span>log.txt<\/span>\"<\/span>,<\/span> \"<\/span>ab<\/span>\"<\/span>)<\/span> as<\/span> f<\/span>:<\/span>\r\n    f<\/span>.<\/span>write<\/span>(<\/span>b<\/span>\"<\/span>start subprocess run<\/span>\\n<\/span>\"<\/span>)<\/span>\r\n    process_run<\/span> =<\/span> subprocess<\/span>.<\/span>run<\/span>(<\/span>script<\/span>,<\/span> stdout<\/span>=<\/span>f<\/span>)<\/span>\r\n    f<\/span>.<\/span>write<\/span>(<\/span>b<\/span>\"<\/span>hi. subprocess run<\/span>\\n\\n<\/span>\"<\/span>)<\/span>\r\n\r\n    f<\/span>.<\/span>write<\/span>(<\/span>b<\/span>\"<\/span>start subprocess popen<\/span>\\n<\/span>\"<\/span>)<\/span>\r\n    process_popen<\/span> =<\/span> subprocess<\/span>.<\/span>Popen<\/span>(<\/span>script<\/span>,<\/span> stdout<\/span>=<\/span>f<\/span>)<\/span>\r\n    f<\/span>.<\/span>write<\/span>(<\/span>b<\/span>\"<\/span>hi. subprocess popen<\/span>\\n<\/span>\"<\/span>)<\/span>\r\n<\/code><\/pre>\n
\u6211\u6b63\u5728\u5c06\u6267\u884c\u7ed3\u679c\u8f93\u51fa\u5230\u540d\u4e3alog.txt\u7684\u6587\u4ef6\u4e2d\u3002\u4e0a\u8ff0\u7a0b\u5e8f\u7684\u6267\u884c\u7ed3\u679c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
(hello)\r\n\r\nstart sleep\r\nwake up\r\nstart subprocess run\r\nhi. subprocess run\r\n\r\nstart subprocess popen\r\nhi. subprocess popen\r\nstart sleep\r\nwake up\r\n\r\n<\/code><\/pre>\n
\u7576\u7136\u53ef\u4ee5\u770b\u51fa\u4f86\u6709\u6240\u4e0d\u540c\u3002\u4f46\u662f\uff0c\u90a3\u500b\uff0c\u8207\u6211\u6240\u9810\u671f\u7684\u9806\u5e8f\u4e0d\u540c\u5462……\u8aaa\u5be6\u8a71\uff0c\u6211\u4e0d\u77e5\u9053\u70ba\u4ec0\u9ebc……\u5c0d\u4e0d\u8d77\u3002<\/p>\n
(hello)\r\n\r\nstart sleep\r\nwake up\r\nstart subprocess run\r\nhi. subprocess run\r\n\r\nstart subprocess popen\r\nhi. subprocess popen\r\nstart sleep\r\nwake up\r\n\r\n<\/code><\/pre>\n
\u81f3\u5c11\u5728\u6267\u884c\u4efb\u4f55\u4e00\u79cd\u5b50\u8fdb\u7a0b\u4e4b\u524d\u90fd\u5e94\u8be5\u5148\u5199\u5165start\uff0c\u4f46\u662f\u2026\u2026<\/p>\n
\u65e0\u8bba\u5982\u4f55\uff0c\u6211\u5e0c\u671b\u4f60\u80fd\u770b\u5230\u7684\u533a\u522b\u662f\u901a\u8fc7\u5b50\u8fdb\u7a0b\u8f93\u51fa\u7684\u884c\u4e0etest_subprocess.py\u4e2d\u7684\u8f93\u51fa\u884c\u3002
\n\u5728run\u65b9\u5f0f\u4e2d\uff0chi\u301c\u7684\u8f93\u51fa\u662f\u5728\u811a\u672c\u6700\u540e\u7684\u8f93\u51fawake up\u4e4b\u540e\u7684\u5b50\u8fdb\u7a0b\u6267\u884c\u540e\u51fa\u73b0\u7684\uff0c\u800c\u5728popen\u65b9\u5f0f\u4e2d\uff0chi\u301c\u7684\u8f93\u51fa\u65e9\u4e8ewake up\u8f93\u51fa\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u5373\u4f7f\u5b50\u8fdb\u7a0b\u6ca1\u6709\u7ed3\u675f\uff0c\u4e3b\u7a0b\u5e8f\u7684\u5904\u7406\u4ecd\u5728\u7ee7\u7eed\u8fdb\u884c\u3002\u6211\u8ba4\u4e3a\u8fd9\u8bc1\u5b9e\u4e86\u5e76\u884c\u5904\u7406\u3002<\/p>\n
\u5bf9\u4e8esubprocess\u7684\u6807\u51c6\u8f93\u5165\u4e3a\u4e86\u51c6\u5907\u5411\u6267\u884c\u7684\u5b50\u8fdb\u7a0b\u8f93\u5165\u6807\u51c6\u8f93\u5165\uff0c\u6211\u4eec\u5c06\u5728\u53c2\u6570\u7684stdin\u4e2d\u6307\u5b9asubprocess.PIPE\u3002\u6b64\u5916\uff0c\u4e3a\u4e86\u5c06\u8f93\u5165\u7ed3\u679c\u4f5c\u4e3a\u503c\u8fd4\u56de\uff0c\u6211\u4eec\u8fd8\u9700\u8981\u5728stdout\u548cstderr\u4e2d\u6307\u5b9asubprocess.PIPE\u3002
\n\u7136\u540e\uff0c\u6211\u4eec\u5c06\u4f7f\u7528Popen.communicate\u6765\u8fdb\u884c\u6807\u51c6\u8f93\u5165\u3002\u4f46\u662f\uff0c\u8bf7\u6ce8\u610fPopen.communicate\u53ea\u80fd\u4f7f\u7528\u4e00\u6b21\u3002\u8ba9\u6211\u4eec\u8fdb\u884c\u4e00\u6b21\u5b9e\u9a8c\u3002<\/p>\n
\u4ea4\u6d41\u7684\u5b9e\u9a8c
\n\u8fd9\u91cc\u5c06\u5b9e\u9a8c\u7528\u7684\u4ee3\u7801\u6574\u7406\u5982\u4e0b\u3002<\/p>\n
\u5b9f\u9a13\u7528\u30b3\u30fc\u30c9wait_input.py
\nimport time<\/p>\n
string1 = input()
\nprint(f”1: {string1}”)<\/p>\n
print(“sleep”)
\ntime.sleep(3)
\nprint(“wake up”)<\/p>\n
string2 = input()
\nprint(f”2: {string2}”)<\/p>\n
test_com.py
\nimport subprocess<\/p>\n
process = subprocess.Popen(
\n[“python3”, “wait_input.py”],
\nstdin=subprocess.PIPE,
\nstdout=subprocess.PIPE,
\nstderr=subprocess.PIPE
\n)<\/p>\n
def printOutErrs(outs, errs):
\nprint(“\\nout”)
\nprint(outs.rstrip().decode())
\nprint(“\\nerr”)
\nprint(errs.rstrip().decode())<\/p>\n
try:
\nprint(“input”)
\nouts, errs = process.communicate(b”first”, timeout=5)
\nprintOutErrs(outs, errs)
\nexcept subprocess.TimeoutExpired:
\nprint(“timeout”)
\nprocess.kill()
\nouts, errs = process.communicate()
\nprintOutErrs(outs, errs)<\/p>\n
try:
\nprint(“input”)
\nouts, errs = process.communicate(b”second”, timeout=5)
\nprintOutErrs(outs, errs)
\nexcept subprocess.TimeoutExpired:
\nprint(“timeout”)
\nprocess.kill()
\nouts, errs = process.communicate()
\nprintOutErrs(outs, errs)<\/p>\n<\/details>\n
wait_input.py<\/p>\n
\u5165\u529b\u3092\u53d7\u3051\u53d6\u3063\u3066\u305d\u308c\u3092\u51fa\u529b\u5f8c3\u79d2\u5f85\u6a5f\u3057\u518d\u3073\u5165\u529b\u3092\u53d7\u3051\u53d6\u3063\u3066\u51fa\u529b\u3059\u308b<\/p>\n
test_com.py<\/p>\n
wait_input.py\u3092subprocess\u3067\u5b9f\u884c\u3057\uff0ccommunicate\u3092\u4e8c\u5ea6\u5b9f\u884c\u3059\u308b<\/p>\n
\u4ee5\u4e0b\u662f\u4e00\u6bb5\u4ee3\u7801\u7684\u611f\u89c9\u3002\u6267\u884c\u540e\u7684\u7ed3\u679c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
$ python3 test_com.py \r\ninput\r\n\r\nout\r\n1: first\r\nsleep\r\nwake up\r\n\r\nerr\r\nTraceback (most recent call last):\r\n  File \"\/home\/iharuki\/test\/popen\/wait_input.py\", line 10, in <module>\r\n    string2 = input()\r\nEOFError: EOF when reading a line\r\n\r\nstatus: 1\r\ninput\r\nTraceback (most recent call last):\r\n  File \"\/home\/iharuki\/test\/popen\/test_com.py\", line 37, in <module>\r\n    outs, errs = process.communicate(b\"second\", timeout=5)\r\n  File \"\/usr\/lib\/python3.10\/subprocess.py\", line 1127, in communicate\r\n    raise ValueError(\"Cannot send input after starting communication\")\r\nValueError: Cannot send input after starting communication\r\n<\/code><\/pre>\n
\u770b\u6765\u51fa\u73b0\u4e86\u4e24\u4e2a\u9519\u8bef\u3002<\/p>\n
    \n
  1. \n
      EOF\u9519\u8bef\uff1a\u8bfb\u53d6\u884c\u65f6\u9047\u5230EOF<\/ol>\n<\/li>\n<\/ol>\n
       <\/p>\n
        \n
      1. \n
          \u8fd9\u4e2a\u9519\u8bef\u4f3c\u4e4e\u662f\u5728\u6536\u5230\u8f93\u5165\u7684\u4fe1\u606f\u540e\uff0c\u5374\u53d1\u73b0\u6ca1\u6709\u8f93\u5165\u7684\u60c5\u51b5\u4e0b\u51fa\u73b0\u7684\u9519\u8bef\u3002<\/ol>\n<\/li>\n<\/ol>\n
          \u6570\u503c\u9519\u8bef\uff1a\u5728\u542f\u52a8\u901a\u4fe1\u540e\u65e0\u6cd5\u53d1\u9001\u8f93\u5165
          \n\u6b63\u5982\u82f1\u6587\u4e2d\u6240\u8ff0\uff0c\u7531\u4e8e\u5df2\u7ecf\u6267\u884c\u4e86\u901a\u4fe1\u64cd\u4f5c\uff0c\u56e0\u6b64\u65e0\u6cd5\u518d\u6b21\u4f20\u9012\u8f93\u5165\u3002<\/p>\n
          \u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u65e0\u6cd5\u591a\u6b21\u4f7f\u7528\u901a\u4fe1\u8fdb\u884c\u6807\u51c6\u8f93\u5165\u3002\u90a3\u8be5\u600e\u4e48\u529e\u5462\uff1f\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u5411\u5b50\u8fdb\u7a0b\u7684stdin\u7f13\u51b2\u533a\u4e2d\u5199\u5165\u6570\u636e\u3002\u5982\u679c\u9700\u8981\u8f93\u5165\u5e76\u7ed3\u675f\u7a0b\u5e8f\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528communicate\uff0c\u800c\u5728\u7b2c\u4e8c\u4e2a\u8f93\u5165\u90e8\u5206\uff0c\u6211\u4eec\u5c06\u7ee7\u7eed\u4f7f\u7528communicate\u3002<\/p>\n
          \u5bf9\u4e8e\u7b2c\u4e00\u4e2a\u8f93\u5165\uff0c\u505a\u6cd5\u5982\u4e0b\uff1a<\/p>\n
          import<\/span> subprocess<\/span>\r\n\r\nprocess<\/span> =<\/span> subprocess<\/span>.<\/span>Popen<\/span>(<\/span>\r\n    [<\/span>\"<\/span>python3<\/span>\"<\/span>,<\/span> \"<\/span>wait_input.py<\/span>\"<\/span>],<\/span>\r\n    stdin<\/span>=<\/span>subprocess<\/span>.<\/span>PIPE<\/span>,<\/span>\r\n    stdout<\/span>=<\/span>subprocess<\/span>.<\/span>PIPE<\/span>,<\/span>\r\n    stderr<\/span>=<\/span>subprocess<\/span>.<\/span>PIPE<\/span>\r\n)<\/span>\r\n\r\n\r\ndef<\/span> printOutErrs<\/span>(<\/span>outs<\/span>,<\/span> errs<\/span>):<\/span>\r\n    print<\/span>(<\/span>\"<\/span>\\n<\/span>out<\/span>\"<\/span>)<\/span>\r\n    print<\/span>(<\/span>outs<\/span>.<\/span>rstrip<\/span>().<\/span>decode<\/span>())<\/span>\r\n    print<\/span>(<\/span>\"<\/span>\\n<\/span>err<\/span>\"<\/span>)<\/span>\r\n    print<\/span>(<\/span>errs<\/span>.<\/span>rstrip<\/span>().<\/span>decode<\/span>())<\/span>\r\n\r\n\r\n+ <\/span>process<\/span>.<\/span>stdin<\/span>.<\/span>write<\/span>(<\/span>b<\/span>\"<\/span>write buffer<\/span>\\n<\/span>\"<\/span>)<\/span>\r\n<\/span>+ <\/span>process<\/span>.<\/span>stdin<\/span>.<\/span>flush<\/span>()<\/span>\r\n<\/span>\r\n- <\/span>try<\/span>:<\/span>\r\n<\/span>- <\/span>    print<\/span>(<\/span>\"<\/span>input<\/span>\"<\/span>)<\/span>\r\n<\/span>- <\/span>    outs<\/span>,<\/span> errs<\/span> =<\/span> process<\/span>.<\/span>communicate<\/span>(<\/span>b<\/span>\"<\/span>first<\/span>\"<\/span>)<\/span>\r\n<\/span>- <\/span>    printOutErrs<\/span>(<\/span>outs<\/span>,<\/span> errs<\/span>)<\/span>\r\n<\/span>- <\/span>except<\/span> subprocess<\/span>.<\/span>TimeoutExpired<\/span>:<\/span>\r\n<\/span>- <\/span>    print<\/span>(<\/span>\"<\/span>timeout<\/span>\"<\/span>)<\/span>\r\n<\/span>- <\/span>    process<\/span>.<\/span>kill<\/span>()<\/span>\r\n<\/span>- <\/span>    outs<\/span>,<\/span> errs<\/span> =<\/span> process<\/span>.<\/span>communicate<\/span>()<\/span>\r\n<\/span>- <\/span>    printOutErrs<\/span>(<\/span>outs<\/span>,<\/span> errs<\/span>)<\/span>\r\n<\/span>\r\ntry<\/span>:<\/span>\r\n    print<\/span>(<\/span>\"<\/span>input<\/span>\"<\/span>)<\/span>\r\n    outs<\/span>,<\/span> errs<\/span> =<\/span> process<\/span>.<\/span>communicate<\/span>(<\/span>b<\/span>\"<\/span>second<\/span>\"<\/span>)<\/span>\r\n    printOutErrs<\/span>(<\/span>outs<\/span>,<\/span> errs<\/span>)<\/span>\r\nexcept<\/span> subprocess<\/span>.<\/span>TimeoutExpired<\/span>:<\/span>\r\n    print<\/span>(<\/span>\"<\/span>timeout<\/span>\"<\/span>)<\/span>\r\n    process<\/span>.<\/span>kill<\/span>()<\/span>\r\n    outs<\/span>,<\/span> errs<\/span> =<\/span> process<\/span>.<\/span>communicate<\/span>()<\/span>\r\n    printOutErrs<\/span>(<\/span>outs<\/span>,<\/span> errs<\/span>)<\/span>\r\n\r\n<\/code><\/pre>\n
          \u3053\u3053\u3067\u5927\u4e8b\u306a\u3053\u3068\u306f\uff0cwrite\u3067\u6539\u884c\\n\u3092\u5165\u308c\u308b\u3053\u3068\u3068flush\u3067\u30d0\u30c3\u30d5\u30a1\u3092stdin\u306b\u66f8\u304d\u8fbc\u3080\u3053\u3068\u3067\u3059\uff0e\u6539\u884c\u3092\u5165\u308c\u308b\u3053\u3068\u306b\u3064\u3044\u3066\u306f\uff0c\u81ea\u5206\u304c\u5165\u529b\u3059\u308b\u3053\u3068\u3092\u8003\u3048\u308c\u3070\u3088\u3044\u3067\u3059\uff0e\u5165\u529b\u306e\u6700\u5f8c\u306fENTER\u3092\u62bc\u3057\u3066\u78ba\u5b9a\u3057\u307e\u3059\u306e\u3067\uff0c\u305d\u308c\u306e\u305f\u3081\u306b\u6539\u884c\u304c\u5fc5\u8981\u3067\u3059\uff0eflush\u306b\u3064\u3044\u3066\u306f\uff0cvim\u3084nano\u306e\u30a8\u30c7\u30a3\u30bf\u3092\u4f7f\u3063\u305f\u3053\u3068\u304c\u3042\u308b\u4eba\u306a\u3089\u308f\u304b\u308b\u306e\u3067\u306f\u306a\u3044\u3067\u3057\u3087\u3046\u304b\uff0e\u5909\u66f4\u70b9\u306e\u4fdd\u5b58\u306f\uff0c\u30d0\u30c3\u30d5\u30a1\u3092\u66f8\u304d\u8fbc\u3080\u3053\u3068\u3067\u3067\u304d\u307e\u3059\uff0e\u305d\u308c\u304cflush\u3068\u540c\u3058\u3082\u306e\u3067\u3059\uff0e<\/p>\n
          \u5c06\u66f4\u6539\u540e\u7684\u6267\u884c\u7ed3\u679c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
          $ <\/span>python3 test_com.py \r\ninput\r\n\r\nout\r\n1: write buffer\r\nsleep\r\n<\/span>wake up\r\n2: second\r\n\r\nerr\r\n<\/code><\/pre>\n
          \u6211\u6210\u529f\u5730\u53d1\u9001\u4e86\u591a\u6b21\u8f93\u5165\u3002<\/p>\n
          \u786e\u8ba4\u548c\u7b49\u5f85\u5b50\u8fdb\u7a0b\u7684\u7ed3\u675f
          \n\u4e3a\u4e86\u68c0\u67e5\u5b50\u8fdb\u7a0b\u662f\u5426\u5df2\u7ecf\u7ed3\u675f\uff0c\u53ef\u4ee5\u4f7f\u7528poll()\u3002\u53e6\u5916\uff0c\u4f7f\u7528wait()\u6765\u7b49\u5f85\u8fdb\u7a0b\u7684\u7ed3\u675f\u3002\u5f53\u6211\u4eec\u9700\u8981\u5b9e\u65f6\u76d1\u63a7subprocess\u7684\u8fd0\u884c\u72b6\u6001\u5e76\u4e14\u9a8c\u8bc1\u8f93\u51fa\uff0c\u6216\u8005\u5728\u7b49\u5f85subprocess\u7ed3\u675f\u65f6\u7f16\u5199\u9700\u8981subprocess\u5904\u4e8e\u975e\u8fd0\u884c\u72b6\u6001\u7684\u5904\u7406\u65f6\uff0c\u6211\u8ba4\u4e3a\u4f1a\u4f7f\u7528\u8fd9\u4e24\u4e2a\u65b9\u6cd5\u3002<\/p>\n
          \u8ba9\u6211\u4eec\u5c1d\u8bd5\u4e00\u4e0b\u8fd9\u4e2a\u3002\u6211\u51c6\u5907\u4e86\u4ee5\u4e0b\u8fd9\u6bb5\u4ee3\u7801\u3002<\/p>\n
          import<\/span> subprocess<\/span>\r\nimport<\/span> time<\/span>\r\n\r\nprocess<\/span> =<\/span> subprocess<\/span>.<\/span>Popen<\/span>(<\/span>\"<\/span>.\/sleep_script.sh<\/span>\"<\/span>,<\/span> stdout<\/span>=<\/span>subprocess<\/span>.<\/span>PIPE<\/span>)<\/span>\r\n\r\nprint<\/span>(<\/span>f<\/span>\"<\/span>status is: <\/span>{<\/span>process<\/span>.<\/span>poll<\/span>()<\/span>}<\/span>\"<\/span>)<\/span>\r\n\r\nwhile<\/span> process<\/span>.<\/span>poll<\/span>()<\/span> is<\/span> None<\/span>:<\/span>\r\n    print<\/span>(<\/span>\"<\/span>waiting<\/span>...<\/span>...<\/span>\"<\/span>)\r\n    time.sleep(1)\r\n\r\n    btext = process.stdout.readline()\r\n    if btext != b<\/span>\"\"<\/span>:\r\n        print(btext.rstrip().decode())\r\n\r\nprint(f<\/span>\"<\/span>finished<\/span>.<\/span> status<\/span> is<\/span>:<\/span> {<\/span>process<\/span>.<\/span>poll<\/span>()}<\/span>\"<\/span>)\r\n\r\nprint(<\/span>\"<\/span>start<\/span>\"<\/span>)\r\n\r\nprocess = subprocess.Popen(<\/span>\"<\/span>.<\/span>\/<\/span>sleep_script<\/span>.<\/span>sh<\/span>\"<\/span>, stdout=subprocess.PIPE)\r\nprint(f<\/span>\"<\/span>status<\/span> is<\/span>:<\/span> {<\/span>process<\/span>.<\/span>poll<\/span>()}<\/span>\"<\/span>)\r\nprocess.wait()\r\nprint(<\/span>\"<\/span>end<\/span>\"<\/span>)\r\nfor btext in process.stdout.readlines():\r\n    print(btext.rstrip().decode())\r\n<\/span><\/code><\/pre>\n
          \u6267\u884c\u7ed3\u679c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
          $ <\/span>python3 test_finish.py \r\nstatus is: None\r\nwaiting......\r\nstart sleep\r\n<\/span>waiting......\r\nwake up\r\nwaiting......\r\nfinished. status is: 0\r\nstart\r\nstatus is: None\r\nend\r\nstart sleep\r\n<\/span>wake up\r\n<\/code><\/pre>\n
          \u8c03\u67e5()\u7684\u8fd4\u56de\u503c\uff0c\u5982\u679c\u6b63\u5728\u6267\u884c\uff0c\u5219\u4e3aNone\u3002\u8fd9\u662f\u4e3a\u4e86\u786e\u8ba4poll()\u662f\u5426\u5df2\u7ecf\u7ed3\u675f\u4ee5\u53ca\u5b83\u4ee5\u4ec0\u4e48\u6837\u7684returncode\u7ed3\u675f\uff0c\u5982\u679c\u5df2\u7ed3\u675f\uff0c\u8fd4\u56de\u503c\u5c06\u4e0d\u662fNone\u800c\u662f\u5176\u4ed6\u503c\u3002<\/p>\n
          wait()\u4fdd\u6301\u539f\u6837\uff0c\u7b49\u5f85\u7ed3\u675f\u3002<\/p>\n
          \u6211\u8ba4\u4e3a\u8fd9\u6837\u5c31\u53ef\u4ee5\u4e86\u89e3\u4f7f\u7528Python\u7684subprocess\u8fdb\u884c\u540e\u53f0\u6267\u884c\u7684\u57fa\u672c\u77e5\u8bc6\u3002\u63a5\u4e0b\u6765\uff0c\u5efa\u8bae\u9605\u8bfb\u76f8\u5173\u6587\u6863\u6216\u8fdb\u884c\u7279\u5b9a\u641c\u7d22\u3002\u8f9b\u82e6\u4e86\u3002<\/p>\n
          Python\u7684\u9519\u8bef\u4fe1\u606f\u201cEOFError: \u8bfb\u53d6\u884c\u65f6\u906d\u9047\u6587\u4ef6\u672b\u5c3e\uff08EOF\uff09\u201d<\/section>\n","protected":false},"excerpt":{"rendered":"
          \u524d\u63d0 t\u00ed)\u8fd9\u7bc7\u6587\u7ae0\u662f\u4e00\u7bc7\u65e8\u5728\u901a\u8fc7 discord.py \u7684 discord bot \u6765\u63a7\u5236 Minecraf […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-28106","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"\n\u901a\u8fc7Python\u7684subprocess\u6a21\u5757\u8fdb\u884c\u540e\u53f0\u6267\u884c - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e\u901a\u8fc7Python\u7684subprocess\u6a21\u5757\u8fdb\u884c\u540e\u53f0\u6267\u884c\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u901a\u8fc7python\u7684subprocess\u6a21\u5757\u8fdb\u884c\u540e\u53f0\u6267\u884c\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u901a\u8fc7Python\u7684subprocess\u6a21\u5757\u8fdb\u884c\u540e\u53f0\u6267\u884c\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8e\u901a\u8fc7Python\u7684subprocess\u6a21\u5757\u8fdb\u884c\u540e\u53f0\u6267\u884c\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u901a\u8fc7python\u7684subprocess\u6a21\u5757\u8fdb\u884c\u540e\u53f0\u6267\u884c\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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