Question

我正在尝试用一个参数列表调用popen。

    execString = "java -jar {} {} {} {} {} {}".format(os.path.join(config.java_root,
                                                                   config.java_jar),
                                               self.canvasSize,
                                               self.flightId,
                                               self.domain,
                                               self.defPath,
                                               self.harPath)
    execStringList = execString.split()
    print execStringList
    subprocess.Popen([execStringList])

execStringList是：

['java', '-jar', '/Users/me/Projects/reporting-test/build/clickunit-0.1.jar', '300x1050', '123', 'dev.me.net', '/Users/me/Projects/reporting-test/src/definitions/300x1050.yml', '/Users/me/Projects/reporting-test/out/01/15112']

根据：Python OSError: [Errno 2]是正确的格式。但是，我收到以下错误：

  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 672, in __init__
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1202, in _execute_child
AttributeError: 'list' object has no attribute 'rfind'

如果我将execString视为字符串，我会得到一个不同的错误：

  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 672, in __init__
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1202, in _execute_child
OSError: [Errno 2] No such file or directory

即使我从终端运行此命令，也可以。

$> java -jar /Users/me/Projects/reporting-test/build/clickunit-0.1.jar 300x1050 123 dev.me.net /Users/me/Projects/reporting-test/src/definitions/300x1050.yml /Users/me/Projects/reporting-test/out/01/3727

TIA的帮助！

修改

编辑编辑

NEVERMIND，我看到了这个问题。 []...谢谢！ heheh

Answer 1

execStringList已经是一个列表，因此您可以将其直接传递给subprocess.Popen。

execString = "java -jar {} {} {} {} {} {}".format(os.path.join(config.java_root,
                                                               config.java_jar),
                                           self.canvasSize,
                                           self.flightId,
                                           self.domain,
                                           self.defPath,
                                           self.harPath)
execStringList = execString.split()
print execStringList
# Pass execStringList directly to Popen
subprocess.Popen(execStringList)

Python - 用很多参数调用popen

1 个答案: